Wf* HT-U.. 1 ■ ’S ENCYCLOPAEDIA BRITANNICA SEVENTH EDITION. ,* ,, ' - , . ■ . BRITANNICA DICTIONARY OF s ARTS, SCIENCES, AND GENERAL LITERATURE. SEVENTH EDITION, WITH PRELIMINARY DISSERTATIONS ON THE HISTORY OF THE SCIENCES, AND OTHER EXTENSIVE IMPROVEMENTS AND ADDITIONS; INCLUDING THE LATE SUPPLEMENT. A GENERAL INDEX, AND NUMEROUS ENGRAVINGS. VOLUME XV. THE ENCYCLOPAEDIA OR ADAM AND CHARLES BLACK, EDINBURGH; M.DCCC.XLIL ENCYCLOPAEDIA BRITANNICA M E Y Meyahoon j^/i’EYAHOON, a town of the Burman dominions, ex- || IVJL tending about two miles along the western margin Meynn- 0f ^ xrrawaddy, and glittering at a distance with gilded ' v spires. It has also many spacious convents. The vicinity is uncommonly productive in rice, of which large stores are kept here ready to be transported to any part of the empire where a scarcity occurs. Long. 95. 8. E. Lat. 18. 19. N. MEYWAR, a very extensive district of Hindustan, in the province of Ajmeer, situated principally between the 25th and 26th degrees of north latitude, and occasionally named Chitore and Odeypoor. The general surface is hilly, but not mountainous, although it abounds in natu¬ rally strong positions. The productions of this territory are wheat, rice, sugar, barley, and other grains; besides which it has a good breed of camels and horses. The principal manufactures are matchlocks, swords, and cotton cloth. The principal towns are Odeypoor, Shapoorah, and Bilarah. The district is at present possessed by numerous petty rajpoot chiefs, who live in perpetual hostility with each other. MEYRINGEN, a town of Switzerland, which, on ac¬ count of its natural beauties, is visited by most persons who, to gratify their taste for picturesque scenery, visit that country. It is situated in the vale of Hosli, in the upper part of the canton of Berne. It stands on a moun¬ tain 1950 feet above the level of the sea, and is surrounded by the snow-covered pinnacles of the neighbouring hills. The town, though so high, is situated in a rich and well- cultivated valley, into which there are some of the most lofty and copious waterfalls from the surrounding heights. The most remarkable of these cascades is the Reichen- bach, which forms seven successive falls, the first of which is the largest, being 300 feet in height; it falls into a basin, into which the sun rarely penetrates, and, when seen from below, exhibits, about noon, in fine weather, some surpris¬ ing rainbows. The town itself contains only 650 inhabi¬ tants ; but there are two large hotels generally well filled with strangers during the summer months. The whole valley and parish contain 4490 souls, whose chief occupa¬ tion consists in making butter and cheese, their cows being nearly 4000 in number. VOL. xv. M E Z MEZERAI, Francois Eudes de, a celebrated French M&serai. historian, the son of Isaac Eudes, a surgeon, was born atv'—‘'v'—^ Rye, in Lower Normandy, in 1610, and took the surname of Mezerai, from a hamlet near Rye. Having completed his studies at Caen, he discovered a strong inclination to poetry ; but on proceeding to Paris, he was advised by one of his friends to apply himself to the study of politics and history, and procured the place of commissary at war, which he held during two campaigns. He then shut him¬ self up in the college of St Barbe, in the midst of books and manuscripts; and, in 1643, published the first volume of the History of France, in folio. Some years afterwards, the other two volumes also appeared. In that work Me¬ zerai surpassed all who had written the history of France before him, and was rewarded by the king with a pension of four thousand livres. In 1668 he published an Abridg¬ ment of his History of France, in three volumes quarto, which was well received by the public ; but as he inserted in that work the origin of most of the taxes, with very free reflections, M. Colbert complained of it, upon which Me¬ zerai promised to correct what he had done in a second edition. As his corrections, however, amounted rather to palliations than changes or retractations, the minister caused half of his pension to be suppressed. Mezerai complained of this in very severe terms, but the only answer he obtain¬ ed was the suppression of the other half. Annoyed at this treatment, he resolved to write on subjects which could not expose him to such disappointments, and composed his treatise on the origin of the French, which did him much honour. He was elected perpetual secretary to the French Academy, and died in the year 1683. He is said to have been extremely negligent of his person, and so careless of his dress that he might have passed for a beg- ger rather than a man of letters. He was actually seized one morning by the archers des pauvres, or parish officers; a mistake which, so far from provoking, highly diverted him. He used to study and write by candle-light, even at noon-day in summer; and, as if there had been no sun in the world, always waited upon his company to the door with a candle in his hand. In regard to religion, he affect¬ ed a species of Pyrrhonism, which, however, was not so much A M E Z M E Z Mezieres in his heart as in his mouth, and rather the effect of a con- 11 tradictory humour than the result of conviction. This ap- Mezuzoth. peare(j from his last sickness ; for having sent for those ^friends who had been the most frequent auditors of his li¬ centious talk about religion, he made a sort of recantation, which he concluded with desiring them to forget what he might formerly have said upon the subject of religion, and to “ remember that Mezerai dying was more to be be¬ lieved than Mezerai living.” The following is a list of the works of Mezerai, viz. 1. Histoire de France, 1643, 1646, 1651, in three vols. folio; 2. Abrege Chronologique de THistoire de France, 1668, in three vols. 4to ; 3. Traite de 1’Origine des Fran^ais, Amsterdam, 1688, in 12mo ; 4. Une Traduction de 1’Histoire des Turcs de Chalcondyle, Paris, 1662, in two vols. folio; 5. Une Traduction f'ra^" ^aise du Traite de Jean de Salisbury, intitule La Vanite de la Cour, Paris, 1640, in 4to ; 6. Traite de la \ erite de la Religion Chretienne, translated from the Latin of Gro- tius, Paris, 1644, in 8vo; 7. Histoire de la Mere et du Fils, that is, of Mary of Medicis and Louis XIII., Amster¬ dam, 1730, in 4to. A compilation entitled Memoires His- toriques et Critiques sur divers points de X Histoire de Franee, has also been ascribed to Mezerai, though apparently with¬ out the slightest foundation. MEZIERES, an arrondissement of the department of the North, in France, extending over 380 square miles. It is divided into seven cantons, and subdivided into 113 communes, containing 56,500 inhabitants. rl he capital is the city of the same name situated on the river Meuse, by which it is separated from Charleville. It contains 460 houses, and 3400 inhabitants. There is a strong citadel, and also a school for the engineers. Long. 4. 38. 1. E. Lat. 49. 45. 47. N. MEZIRIAC, Claude Gaspar Racket Sieur de, one of the most ingenious men of the seventeenth century, was born at Bourg-en-Bresse on the 9 th of October 1581. He was a good poet, an excellent grammarian, a great Greek scholar, and an admirable critic. Fie was well versed in the controversies both in philosophy and religion, and deeply skilled in algebi'a and geometry, of which he gave proof by publishing the six books of Diophantus, enriched with a very able commentary and notes. In his youth he spent a considerable time at Paris and also at Rome, where, in competition with Vaugelas, he wrote a small col¬ lection of Italian poems, amongst which there are imi¬ tations of the most beautiful similes contained in the first eight books of the .ZEneid. He also translated Ovid s Epistles, great part of which he illustrated with very cu¬ rious commentaries of his own ; and undertook the trans¬ lation of Plutarch’s works, with notes, which he had near¬ ly brought to a conclusion, when he died, at Bourg-en- Bresse, in 1638, at the age of fifty-seven. He left behind him several works, the principal of which are, 1. Problemes Plaisans et Delectables qui se font par les Nombres, Ly¬ ons, 1613, 1624, in 8vo ; 2. Diophanti Alexandrini Arith- meticorum libri sex, et de Numeris multangulis liber unus, Gr. et Lat. Commentar. illustrat. Paris, 1621, in folio; 3. Chansons devotes et saintes sur toutes les principales fetes de I’Annee, et sur autres divers sujets, Dijon, 1615, in 8vo ; 4. Les Epitres d’Ovide, trad, en vers Francois, avec des Commentaires, Bourg-en-Bresse, 1626, in 8vo. MEZUZOTH, in the Jewish customs, certain pieces of parchment, which the Jews affix to the door-posts of their houses; taking that literally which Moses commanded them, when he said, “ Thou shalt never forget the laws of thy God, but thou shalt write them upon the posts of thy house, and on thy gates.” This expression apparently meant nothing more than that they should always remem¬ ber the lawrs of their God, whether they came into the house or went out. But the Hebrew doctors imagined that their lawgiver meant something more. They pretend¬ ed that, to avoid making themselves ridiculous, by writing the commandments of God without their doors, or rather to avoid exposing themselves to the profanation of the v'“ wicked, they ought at least to write them on a parchment, and to enclose it in something. They, therefore, wrote these words upon a square piece of parchment prepared on pur¬ pose, with a particular ink, and in a square kind of charac¬ ter. The Hebrew word mezuza properly signifies the door¬ posts of a house ; but it is also applied to the roll of parch¬ ment now mentioned. MEZZOTINTO, a particular manner of representing figures on copper, so as to form prints in imitation of paint¬ ing in Indian ink. See Engraving. The invention of this art has usually been attributed to Prince Rupert. But Baron Heinikin, a judicious and ac¬ curate writer upon the subject of engraving, asserts, with great appearance of truth, that it was a Lieutenant-colonel de Siegan, an officer in the service of the landgrave of Hesse, who first engraved in this manner; and that the print which he produced was a portrait of the Princess Amelia Elizabeth of Hesse, engraved in the year 1643. Prince Rupert learned the secret from this gentleman, and brought it into England when he came over the second time with Charles II. Prince Rupert’s print of an execu¬ tioner holding a sword in one hand and a head in the other, a half length, from Spagnoletto, is dated 1658. This art has never been cultivated with success in any country but England. The prince laid his grounds upon the plate with a chan¬ nelled roller ; but, about the same time, one Sherwin laid his grounds with a half-round file, which was pressed down with a heavy piece of lead. Both these grounding tools have for many years been laid aside; and a hand tool, re¬ sembling a shoemaker’s cutting-board knife, with a fine ci e- nelling on the edge, was introduced by one Edial, a smith by trade, who afterwards became a mezzotinto engraver. Mezzotinto is very different from the common way of engraving. To perform it, the surface of the plate is raked, hatched, or punched all over with a knife, or instrument made for the purpose, first one way, and then the other, until the surface of the plate is entirely furrowed with lines or furrows, close and as it were contiguous to each other; so that, if an impression were then taken from it, it would be one uniform blot or smut. Ibis being done, the design is drawn or marked on the same face ; after which, the artists proceed with burnishers, scrapers, and other tools, to expunge and take out the dents or furrows in all parts where the lights of the piece are designed to be; and that more or less as the lights are to be stronger or fainter, leav¬ ing those parts black which are to represent the shadows or deepenings of the draught. As it is much easier to scrape or burnish away parts of a dark ground corresponding with the outline of any design sketched upon it, than to form shades upon a light ground by an infinite number of hatches, strokes, and points, which must all terminate with exactness on the outline, as well as differ in their force and manner, the method of scraping, as it is called, in mezzotinto, becomes much more easy and expeditious than any other method of engraving. The in¬ struments employed in this kind of engraving are, cradles, scrapers, and burnishers. In this engraving, the plate must be prepared and po¬ lished in the same manner as for other engravings, and af¬ terwards divided equally by lines parallel to each othei, and traced out with very soft chalk. T-he distance of these lines should be about one third of the length of the face of the cradle w hich is to be used, and these lines should be marked with capital letters, or strokes of the chalk. The cradle is then to be placed exactly between the first two lines, and passed forwards in the same direction, being kept as steady as possible, and pressed upon with a mode- Mezzo- tinto. M E Z rate force. The same operation must be repeated with re¬ spect to all other lines, till the instrument has thus passed over the whole surface of the plate. From the extremi¬ ties of the other two sides, other lines must then be drawn, which, intersecting the first at right angles, will with them form squares; and the same operation must be repeated with the cradle as in the case of the first. New lines must then be drawn diagonally, and the cradle passed between them as before; and when the first diagonal operation is per¬ formed, the lines must be crossed at right angles, like the former, and the cradles passed between them in the same manner. The plates having undergone the action of the cradle according to the disposition of the first order ot lines, a second set must be formed, having the same dis¬ tances from each other as the first. But they must be so placed as to divide those already made into spaces one third less than their whole extent; that is, every one after the first on each side will take in one third of that before it. These lines of the second order must be marked with small letters, or lesser strokes, to distinguish them from the first; and the same treatment of the plate must be pursued with respect to them as was practised for the others. When this second operation is finished, a third order of lines must be made. By these means, the original spaces will be exactly divided into equal thirds ; and the cradle must be again employed between those lines, as before. When the whole of this operation is finished, it is called one turn ; but in order to produce a very dark and uniform ground, the plate must undergo the repetition of all these several operations for above twenty times, beginning to pass the cradle again between the first lines, and proceeding in the same manner through all the rest. When the plate is pre¬ pared with a proper ground, the sketch must be chalked on it, by rubbing the paper on the back with chalk; and it is also proper to overtrace it afterwards with black lead or Indian ink. The scraping is then performed by paring or cutting away the grain of the ground in various de¬ grees, so that none of it is left in the original state, except in the touches of the strongest shade. The general man¬ ner of proceeding is the same as drawing with white upon black paper. The masses of light are first commenced; then those parts which go off into light in their upper part, but are brown below. The reflections are next entered upon, after which the plate is blackened with a printer’s blacking ball made of felt, in order to discover the effect, and then the work is proceeded with, observing always to begin every part in the places where the strongest lights are to be. The art of scraping mezzotintos has been applied to that of printing with a variety of colours, in order to produce the resemblance of paintings. The inventor of the method of doing this was Le Blon, a native of Frankfort, and pupil of Carlo Marata, between the years 1720 and 1730. It was established by the inventor upon this principle, that there are three primitive colours, of which all the rest may be com¬ posed by mixing them in various proportions ; that any two of these colours being mixed together, preserve their original power, and only produce a third colour such as their compound must necessarily give, but if transparent colours be mixed, and three primitive kinds compounded together, they destroy each other, and produce black, or a tendency to it, in proportion to the equality or inequality of the mixture ; and that if the three primitive colours be laid, either separately or upon each other, by three plates, engraved correspondent!y on these principles to the colouring of the design, the -whole variety of tints neces¬ sary may be produced. The requisites, therefore, to the execution of any design in this method of printing are the following: 1. To settle a plan of the colouring to be imi¬ tated, showing where the presence of each of the three simple colours is necessary, either in its pure state or com- M E Z 3 bined with some other, to produce the effect required, and Mezzo- to reduce this plan to a painted sketch of each, in which tinto-1 not only the proper outlines, but the degree of strength, shall be expressed ; 2. to engrave three plates according to this plan, which may print each of the colours exactly in the places where, and the proportion in which, they are wanted; 3. to find three transparent substances proper for printing with these three primitive colours. The manner in which M. le Blon prepared the plates may be briefly stated. The three plates of copper were first well fitted to each other with respect to size and figure, and grounded in the same manner as those designed for mezzotinto prints; and the exact place and boundary of each of the three primi¬ tive colours, conformably to the design, were sketched out upon three papers answering in dimensions to the plate. These sketches were then chalked upon the plates ; and all the parts of each plate which were not to convey the colour to which it was appropriated to the print were entirely scraped away, as in forming the light of mezzotinto prints. The parts which were to convey the colours were then work¬ ed upon ; and where the lightest or most diluted tints of the colour were to be, the grain in the ground was proportion¬ ally taken off; but where the full colour was required, it was left entire. In this, regard was had not only to the effects of the colour in its simple state, but also to its com¬ bined operation, either in producing orange-colour, green, or purple, by its admixture with one alone; and further, to its forming brown, gray, and shades or different degrees, by its co-operation with both the others. But though the greater part of the engraving was performed in the mez¬ zotinto manner, yet the graver was employed occasionally for strengthening the shades, and for correcting the out¬ line where it required great accuracy and steadiness. It was found necessary sometimes to have two separate plates for printing the same colour, in order to produce a stronger effect; but the second plate, which was used to print upon the first, was intended only to glaze and soften the colours in particular parts which might require it. As to the black and brown tints, which could not be so conveniently pro¬ duced in a due degree by the mixture of the colours, um¬ ber and black were likewise used. With respect to the order in which the plates are to be applied, it may be proper to observe, that the colour which is least apparent in the picture should be laid on first; that which is between the most and least apparent next; and that which predominates last of all; except where there may be occasion for two plates for the same colour, as was before mentioned, or where there is any required for add¬ ing browns and shades. M. le Blon applied this art to portraits, and showed, by the specimens he produced, the possibility of its being brought, by further improvements, to afford imitations of painting which might have some value. It is, nevertheless, much better adapted to the simpler subjects, where there are fewer intermixtures of colours, and where the accu¬ racy of the reflections and demi-tints are not so essentially necessary to the truth of the design, from the greater lati¬ tude of form and disposition of the colour, as in plants, anatomical figures, and some subjects of architecture. But perhaps plates engraved, or rather finished, with the tool, particularly with respect to the outline, would be better accommodated in some of these cases than those prepared only by scraping. M. Cochin remarks, at the end of an account he has given of M. le Blon’s manner, that although this ingenious artist confined his method principally to the use of three colours, yet, should this invention be again taken up and cultivated, there would be more probability of success in using a greater variety; and that several different kinds might be printed by one plate, provided they were laid on in their respectively proper places by printing-balls, which should 4 MIC Mt'lin be used for that colour only. His hint might, however, be II very greatly improved by tbe further assistance of pencils, Mkhaeli?. accommodated to the plates, for laying on the colours in v ^ the proper parts. MGLIN, a circle of the Russian province of Tscherne- gow, extending in north latitude from 52. 49. to 53. 17. and in east longitude from 32. 37. to 33. 54. The capital is a city of the same name situated on the river Sudenka. It is one of the best built cities of the province, and con¬ tains 980 houses, with 5370 inhabitants, who carry on con¬ siderable trade in the productions of its vicinity, especially in hemp, which is conveyed by the rivers to the Baltic , ports. It has some large annual fairs, and is 611 miles from Petersburg. Long. 32. 39. E. Lat. 53. 6. N. MIANA, a village of Persia, in Azerbijan. Here the celebrated traveller Thevenot died upon his return from Ispahan. It is 60 miles S. E. from Tabreez. MIASSE, a considerable river of Asiatic Russia, which rises in the Ural Mountains, and, traversing the district of Kourgan,in the government of Tobolsk, falls into the Icette. MIASMA, amongst physicians, a particular kind of effluvia, by which certain fevers, particularly intermittents, are produced. MIAVA, a town of Hungary, in the circle of Neustadtel, in the province of the Lower Danube. It stands upon the river Waag, and is a manufacturing place, producing large quantities of linen and woollen cloths, of blankets and quilts ; there are also several distilleries and extensive tanneries. The inhabitants amount to 10,000 persons, who are chiefly of the Sclavonian race. MICA, Muscovy Glass, or Glimmer, a species of mineral substance. MICAH, or The Book of Micah, a canonical book of the Old Testament, written by the prophet Micah, who is the sixth of the twelve lesser prophets. MICHAEL, Mount, formerly one of the most celebrated state-prisons of France. It is a rock situated in the middle of the Bay of Avranches, and is only accessible at low wa¬ ter. Nature has completely fortified one side, by its craggy and almost perpendicular descent, which renders it imprac¬ ticable to ascend it by any address or courage. The other parts are surrounded by walls fenced with semilunar towers after the Gothic manner, but sufficiently strong, together with the advantage of its situation, to render it impreg¬ nable to any attack. At the foot of the mountain begins a street or town, which winds round its base to a consider¬ able height. Above are chambers where state-prisoners are kept, and where there are other buildings intended for residence. On the summit is erected the abbey itself, oc¬ cupying a prodigious space of ground, and of a strength and solidity equal to its enormous size; since it has for many centuries withstood all the injuries of the weather, to which it is so much exposed. In an apartment called the Salle de Chevalerie, the knights of St Michael used to meet in solemn convocation on important occasions. They were the defenders and guardians of this mountain and abbey, as those of the Temple, and of St John of Jerusa¬ lem, were of the holy sepulchre. The hall in which they met is very spacious, but rude and barbarous. Michael’s Mount, St, in the county of Cornwall, and in the corner of Mount’s Bay, is a very high rock, only divided by the tide from the main land, so that it is land and island twice a-day. The town here was burned by the French in the reign of Henry VIII. At the bottom of this mount, in digging for tin, there have been found spear-heads, battle-axes, and swords, of brass, all wrapt up in linen. The county is contracted here into a sort of isthmus. Large trees have been driven in by the sea be¬ tween this mount and Penzance. MICHAELIS, John David, a celebrated biblical cri¬ tic, and author of many esteemed works, was the eldest son of Dr Christian Benedict Michaelis, professor in the Michael- university of Halle, in Lower Saxony, and was born at mas that place on the 27th of February 1717. His father de- II voted him at an early age to an academical life ; and with that view he received the first part of his education in a v , " celebrated Prussian seminary called the Orphan-house, at Glanche, in the neighbourhood of his native place. He commenced his academical career at Halle in 1733, and took his master’s degree in the faculty of philosophy.in 1739. In 1741 he made an excursion to this country, where his superior knowledge of the oriental languages, which was considerably increased by his indefatigable re¬ searches in the Bodleian Library at Oxford, introduced him to the acquaintance, and gained him the esteem, of our first literary characters, with several of whom, particularly Bishop Lowth, he afterwards corresponded for many years- On his return to Halle, after an absence of fifteen months, he began to read lectures on the historical books of the Old Testament, which he continued after his removal to Gottingen in 1745. In 1746 he was appointed professor extraordinary, and soon afterwards professor of philoso¬ phy, in that university. The next year he obtained the place of secretary to the Royal Society there, of which he was director in 1761, and he was soon afterwards made aulic counsellor by the court of Hanover. In 1764 his distinguished talents, and a publication relative to a jour¬ ney to Arabia, which was undertaken by several literary men at the expense, of the king of Denmark, in conse¬ quence of his application through Count Bernsdorf, pro¬ cured him the honour of being chosen a corresponding, and afterwards a foreign, member of the Academy of In¬ scriptions at Paris, of which class the institution admitted only eight; and in the same year he became a member of the society of Haerlem. In 1775 Count Hopkin, who, eighteen years before, had prohibited the use of his writ¬ ings at Upsal, when he was chancellor of that university, prevailed upon the king of Sweden to confer upon him the order of the Polar Star, as a national compensation. In 1786 he was raised to the distinguished rank of privy counsellor of justice by the court of Hanover ; and in 1788 he received his last literary honour, by being unanimously elected a fellow of the Royal Society of London. His great critical knowledge of the Hebrew language, which he displayed in a new translation of the Bible, and in other works, raised him to a degree of eminence almost unknown before in Germany ; and his indefatigable la¬ bours were only equalled by his desire of communicating the knowledge he had acquired to the numerous students of all countries who frequented his admirable lectures, which he continued to deliver, in half-yearly courses, on various parts of the sacred writings, and on the Hebrew, Arabic, and Syriac languages, to the last year of his life. He was forty-five years professor in the university of Got¬ tingen, and during that long period he filled the chair with dignity, credit, and usefulness. He died on the 22d oi October 1791, in the seventy-fourth year of his age. MICHAELMAS, or Feast of St Michael and all Angels, a festival of the Christian church, observed on the 29th of September. MICHEL ANGELO BUONAROTTI, the greatest master of the arts of design who has appeared since the days of Phidias, was born in the castle of Caprese, in Tuscany, on the 6th of March 1474. His father, Lu¬ dovico di Leonardo Buonarotti Simone, was a descen¬ dant of the noble and illustrious family ot the counts of Canossa, and allied to the imperial blood. This cir¬ cumstance had nearly occasioned the world the loss ot the great artist; for when the strong bias ot his mind be¬ came apparent, which occurred at a very early age, his fa¬ ther and uncles discouraged his pursuits, and treated him with harshness, conceiving that their family would be de- 5 M I C M I C Michel Angelo. traded should a scion of their race adopt the profession of artist. But objection, prejudice, and even persecution, proved useless when opposed to devoted attachment and irresistible genius. Michel Angelo received the rudiments of his education at Florence, the nursing-mother of the arts, and here he enjoyed ample facilities of gratifying his taste for drawing. Ludovico finding it hopeless to at¬ tempt to frustrate the intentions of nature, yielded at last to the advice of friends, and the wishes of his son, who was accordingly placed under Domenico Ghirlandaio, a distinguished professor of the arts of painting and design. The youth was articled to serve three years ; but, contrary to custom, instead of paying, he received a premium, an indubitable proof of his great merits, even at the age of fourteen. The original document by which he was en¬ gaged bears date April 1488. His earliest effort in oils showed that he was born to grapple with difficulties from which other men shrink, whilst his success proved that he was also destined to overcome them. The subject was St Antony beaten by devils. In this little picture, be¬ sides the figure of the saint, there were crowded wild and grotesque forms and monsters, to which he was so intent upon giving an aspect of reality, that he painted no part without referring to some natural object. But painting did not engross the whole of his time and attention. 1 he great patron of the arts at this period was Lorenzo de’ Me¬ dici, who, for the purpose of elevating sculpture to a level with painting, opened a garden in blorence, which he amply supplied with antique statues, bas-reliefs, busts, and the like. Thither the youth of the city repaired to study the classic creations of antiquity ; and it is scarcely neces¬ sary to say that it became the favourite haunt of Michel Angelo. From copying the drawings and paintings of others, his attention was turned to the modelling of figures in clay, in imitation of the monuments of ancient art; and the tran¬ sition from this, the initiatory step in sculpture, to the mouldingofthe marble into symmetrical forms, was natural, and speedily withdrew his mind from every other study. The vigilant and practised eye of Lorenzo soon discover¬ ed the genius of the'youthful sculptor in the execution of a mask representing a laughing faun. His father was sent for, and requested to resign Michel to the care of the fa¬ mily ; and this being complied with, apartments were al¬ lotted to him in the ducal palace. Here he received every indulgence and attention, being treated with parental affec¬ tion, and allowed to pursue the bent of his genius, not only without interruption, but cheered and encouraged by the cordial approbation of his munificent patron. Amongst the works which he executed under these favourable auspices, was a bas-relief representing the battle of the Centaurs; on viewing which at a future period of his life, he lamented that he had not confined himself to a branch of art therein he had so soon attained such excellence. This is the strongest evidence which could be produced of the rare merits of the sculpture ; for artists almost uniformly speak disparagingly of their early efforts. On the death of Lorenzo, which happened about two years after he had entered his service, Michel Angelo, with a heavy heart, returned to the paternal mansion. Nothing belonging to Lorenzo was inherited by his son Piero, except the territorial possessions of the family ; and although the young artist continued to pursue his studies with unabated zeal, little patronage or encouragement was to be expected or obtained from a frivolous debauchee. The pusillanimi¬ ty of this person soon distracted the councils of Florence ; and Michel, to escape the storm which he saw impending over that city, retired to Bologna, but returned in about a year afterwards, when tranquillity had been restored. About this period there prevailed a sort of mania for the antique. Whilst the discoveries of antiquity created a new era in art and literature, the importance of which can never Michel be too highly estimated, many ignorant individuals, smit- Angelo, ten with the enthusiasm of the time, betrayed their wantv of judgment by the indiscriminate manner in which they lavished their praise on these remains ; and Michel Angelo resolved to take advantage of the popular excitement. He executed a Sleeping Cupid ; and having stained the marble in such a way as to give it the appearance of a genuine an¬ tique, it was transmitted to a proper person in Rome, who, after burying it in his vineyard, dug it up, and then re¬ ported the discovery. The pardonable trick completely^ succeeded for a time, and the statue was bought by a car¬ dinal for a considerable sum; but of this Michel Angelo received only a small portion. Such deceptions, however, seldom remain long concealed ; the officious zeal of friends, or the vanity of authorship, usually brings about the ex¬ posure of a successful imposition. After the mask was laid aside, and the real artist became known, he received a flattering invitation to visit Rome. Thither he accord¬ ingly repaired, and whilst there he executed a statue of Bacchus, another of a Cupid, and a group of the Virgin with a dead Christ reclining on her knees, together with a car¬ toon representing St Francis receiving the stigmata. The celebrated gonfaloniere, Pietro Soderini, well known as a patron of genius, having been elected to guard the peace and protect the liberties of Florence, Michel Angelo returned to that cify. With the sanction of the new chief magistrate, he was allowed to appropriate to his use a huge block of marble, which had for many years lain neglected in Florence; and out of this he executed a gigantic statue of David, which gave great satisfaction. He also cast a figure in bronze, of the size of nature, and a group of Da¬ vid and Goliath ; but, that his hand might not “ lose its cunning” in the sister art, he painted a Holy Family. This picture is preserved in the Florence gallery ; and it is the only painting in oil by Michel Angelo now remaining, the authenticity of which is not disputed. Having been com¬ missioned to ornament the hall of the ducal palace with a cartoon, he chose for the subject an event connected with the war between the Florentines and Pisans. The work represents the Florentine soldiers, who, alarmed by an un¬ expected assault whilst bathing in the Arno, are getting out of the water with the utmost expedition, and prepar¬ ing for action; and, although only outlined in charcoal, chalk, and the like, it was considered as the most extra¬ ordinary production which had appeared since the revival of the arts in Italy. In the mean time Julius II. having been raised to the pontifical throne, Michel Angelo was in¬ vited to the Vatican, whither he repaired without finishing the cartoon ; but being disgusted with Rome, he returned to Florence, and completed the design. The painting of the picture itself, however, w as never begun. Political events, and a second invitation from Julius II. again attracted him to the Eternal City, and he was employed by his holiness to construct a magnificent mausoleum, which, although immediately commenced, was interrupted during its pro¬ gress, first on account of a misunderstanding between the artist and the pope, and afterwards from other causes. The artist repaired to Bologna, and political events having brought the pope to this city, a reconciliation took place. In a few days Julius II. ordered a colossal statue of him¬ self to be executed in bronze, which Michel Angelo finish¬ ed in sixteen months, and returned to Rome at the end of June 1508. He was, however, disappointed in his hopes of being allowed to proceed with his great architectural un¬ dertaking; for the pope had changed his mind, it is al¬ leged through the jealousy of Bramante, and the artist was requested to decorate with pictures the ceiling and walls of the Sistine Chapel. But his primary disappoint¬ ment was forgotten in his subsequent triumph. This stu¬ pendous work of genius excited the highest admiration. r MIC MIC Michel which contemporary opinion and the judgment of after ages Angelo, have confirmed ; yet, from its commencement till its con- elusion, only eighteen or twenty months elapsed. After the death of Julius II. in 1513, the papal throne was filled by Leo X., whose magnificent reign forms an era in the intellectual history of modern times. Yet, strange as the fact may appear, the life of Michel Angelo during his pontificate is nearly an entire blank. He was employed in^extracting marble from a quarry which was wrought with difficulty, and in constructing a road over intricate swamps and through mountainous ridges, for the purpose of conveying it to the sea. Leo X. died in 1521, and under his successor Adrian VI., Michel Angelo em¬ ployed himself upon the monument of Julius. The reign of Adrian was short, and on his death Clement VII. was raised to the papal throne. The confusion with which the civil affairs of Rome were soon overwhelmed, drove the artist to Florence, where he continued his architectural and other works for the chapel and library of S. Lorenzo, and executed a statue of Christ. His talents as an engineer were likewise put in requisition for the defence of the city. Before commencing the works, he visited Ferrara, then the best fortified town in Italy, and was received with the utmost courtesy by the Duke Alphonso, who showed him every part of the works, and at the same time requested a specimen of the artist’s abilities either in sculpture or in painting. A picture of Jupiter and Leda was the result; but this great production is generally supposed to have been lost. Michel Angelo was enabled to complete the fortifications of Florence before the siege of the city com¬ menced ; and, as in the case of Syracuse, the genius of one individual for a considerable time proved more than a match for thousands of armed men and the mightiest engines of war. By treachery the city passed into the hands of the enemy; but the great artist, although he had shown the dexterity of Archimedes in frustrating the designs of the besiegers, did not share the fate of the great geometrician. The finishing of twro monuments for the Medici family was the price of his liberty. Tranquillity being restored to Italy, Buonarotti returned to Rome; and although frequently interrupted, both by Clement VII. and by his successor Paul III., he at last completed the monument to Julius II. It consists of seven statues, amongst which is the celebrated one of Moses, a production evincing, in a higher degree than any of his other sculptures, that character of majesty and su¬ blimity which more or less pervades them all. Flis next work was the painting of the Last Judgment in the Sistine Chapel, which was finished in 1541 ; and so great was the admiration excited by this mighty effort of genius, that many persons came from distant parts of Italy to see it. He subsequently painted the martyrdom of St Peter and the conversion of St Paul, which cost him great fatigue, as age was beginning to impair his physical energies. But that his intellectual powers still retained their pristine vi¬ gour, the church of St Peter’s, the most splendid monu¬ ment of his genius and success as an architect, affords ample evidence. This fabric was begun by Julius II. in 1506, and, being successively intrusted to Bramante and Antonio de San Gallo, by this transference from hand to hand it was in danger of becoming a huge incongruity. On the death of the last-named architect in 1546, Michel Angelo was appointed architect; and, notwithstanding the jarring and complexity of the original designs, he suc¬ ceeded in simplifying and harmonizing the whole. The work proceeded for a time with considerable rapidity. But he was occasionally withdrawn from it to other things, such as the building of bridges, the superintendence of which might have been safely intrusted to some inferior person. During the latter years of his life the papal chair was filled by several pontiffs, some of whom forwarded, and others retarded, his great undertaking, employing him in the con¬ struction of chapels and other buildings. Nor did he live to witness the completion of this splendid edifice, the greatest and most magnificent Christian temple on earth. He was carried off by a slow fever on the 17th of February 1563. His obsequies were celebrated as became the memory of so unrivalled a genius. Michel Angelo was of the middle stature, bony in his make, and rather spare, but broad over the shoulders. His complexion was good; his forehead was square, and somewhat projecting; his eyes were of a hazel colour, but rather small; and the general effect of his countenance was impaired by a blow which he had re¬ ceived in youth. The character of Michel Angelo as an artist has already been delineated in this work by a masterly hand (see the article Arts, Fine). Grandeur of conception is the quality which distinguishes his works from those of all other artists who have appeared in modern times. Whether he excelled most in painting, in sculpture, or in architecture, it would not be easy to determine. He has left the noblest speci¬ mens of human genius in each department of art. He is the Milton of artists. Things beyond the visible diurnal sphere were within the range of his imagination ; and when he stoops to earth, he invests nature with an ideal grandeur and majesty. His boys are men, his men are a race of giants ; his demons are the evil spirits of Dante and Milton made visible : and his angels are the offspring of the sky. The Sistine Chapel is allowed to be the most finish¬ ed wmrk of art in the world ; and its perfection is owing chiefly to Michel Angelo’s divine paintings. The whole wall behind the altar is covered by his picture of the Last Judgment; the vaulted ceiling represents the creation of the world, and around it are prophets and sibyls. In the sublime painting of the Last Judgment, terrible power is the predominating feature. The good and the bad, angels and devils, crowd the scene, and Christ is represented in the act of judging, or rather of condemning. His complete knowledge of anatomy, which he constantly studied, en¬ abled him to represent in the most perfect manner the human figure in every possible attitude, and to express pain and despair through all their gradations. His other pictures exhibit the same daring sublimity of conception and power of execution. The church of St Peter’s at Rome j.s the most splendid triumph of his architectural talents. His style in architecture is distinguished by grandeur and bold¬ ness; and, in his ornaments, the untamed character of his imagination is frequently apparent, in his preference of the uncommon to the simple and elegant. In sculpture, his statue of Moses is universally acknowledged to be the noblest monument of his genius, displaying, more than any other of his numerous works in this department of art, ail the great qualities of his mind. Michel Angelo was like wise an author, and excelled both in verse and prose. His works have been printed in several collections; but they have also been published separately. (r. r. r.) MICHELDEAN, a town of the county of Gloucester, in the hundred of St Breavell, 119 miles from London. It is on the western side of the Severn, in the forest of Dean, which abounds in mines of coal, and in iron-works, that have consumed much of the wood that formerly covered it. The town consists principally of one long street, and has a market which is held on Monday. The population amounted in 1801 to 563, in 1811 to 535, in 1821 to 556, and in 1831 to 601. MICHIGAN, one of the United States of North Ame¬ rica, which, until 1835, was denominated a territory. It is situated between 41. 38. 58. and 46. 50. of north lati¬ tude, and 82. 15. and 87. 10. of west longitude, being bounded on the north by the Straits of Michilimackinac, on the south by Ohio and Indiana, on the west by Lake Michigan, and on the east by Lakes Huron, St Clair, and Michel- dean I! Michigan. MICHIGAN. 1 Michigan. Erie, and their waters. It may be described generally as 'a large peninsula, somewhat resembling a triangle, with its base resting upon the states of Ohio and Indiana. It is two hundred and fifty miles in length from north to south, from one hundred and eighty to two hundred miles in breadth from east to west, and comprehends a superficies of about 36,000 square miles. The surface of this state is generally level, or gently undulating, there being no moun¬ tains, nor even elevations, with the exception of a strip of table-land, stretching north and south, and assuming to- Avards the north the character of a ridge, but at the highest it is only three hundred feet above the level of the lakes. Notwithstanding the almost uniform flatness of the coun¬ try, there is comparatively little swampy or wet land ; at any rate, not so much as is found on the northern belt of the state of Ohio adjoining the lakes. The soil is a bed of alluvial earth from thirty to one hundred and fifty feet deep, resting upon limestone and argillaceous sandstone. Ferriferous sand rock, saliferous rock, and millstone grit, are found alternating on the surface, at various points in the middle and western parts of the peninsula. The gene¬ ral level of the interior, towards the sources of the rivers, is interspei'sed with lakes and morasses; and a considerable belt of land along the southern shore of Lake Michigan is sandy and sterile, being exposed to the bleak and desolating gales of the lake. But a great proportion of the land is fertile, and well adapted to the purposes of agriculture. The country generally is divided into nearly equal propor¬ tions of grass prairies, distinguished, according to their pre¬ vailing character, by the names of wet and dry ; and broad and deep forests of trees, nearly similar to those of Ken¬ tucky, namely, black walnut, black cherry, honey locust, buck-eye, pawpaw", sugar-tree, mulberry, elm, ash, haw¬ thorn, coffee-tree, and the grand yellow poplar, which in¬ dicates the richest soil. South of a line drawn due west from the southern extremity of Lake Huron, Michigan consists of open land, known by the name of Oak Plains. The soil is a loam, with varying proportions of clay. It be¬ comes fertile by cultivation, and is good farm land. In the country bordering on the Kalemagoo and St Joseph Rivers, prairies of a black, rich, alluvial soil, and unusual produc¬ tiveness, frequently occur. The northern part of the pe¬ ninsula is less known, being occupied by Indians ; but the land there is in many parts more elevated than that farther south, and is covered with the trees usually met with in those latitudes. Amongst the minerals found in this state may be mentioned bog iron ore, lead ore, gypsum, and bituminous coal, but none of them are present in great quantities. Peat is abundant in many parts. There is a plentiful supply of water everywhere; rivers with their tributaries, and small lakes and springs, being unusually numerous. The princi¬ pal stream is Grand River, which flows into Lake Michi¬ gan. It rises in the south-east angle of the state, and in¬ terlocks at its sources, or in its course, with the waters of the Raisin (which derives its name from the number of vine-trees on its banks), the Black, the Mastigon, and the Saganum. Small boats reach its source, and, by means of this river and that of the Huron, periogues pass from Lake Michigan to Lake Erie. The St Joseph is a considerable stream, falling also into Lake Michigan; as do the Kikal- amezo, Barbue, Beauvaise, St Nicholas, Marguettes, and other rivers. On the other side of the peninsula are the Detroit, which is twenty-five miles in length, and above a mile in average breadth ; the St Clair, which is forty miles in length and half a mile in average breadth; the St Ma¬ ry’s, which is fifty miles in length and three quarters of a mile in average breadth ; and the Huron, Thunder, and Sagana, which are considerable rivers. Other streams there are in abundance, but not of such magnitude as to merit particular attention. The peninsula of Michigan being surrounded upon all sides, excepting the southern extremity, with water, the va-Michigan, rious lakes and straits require to be described. That lake which bears the name of the state is one of the five great lakes in the northern part of the United States. It is nearly three hundred miles in length, about sixty miles in breadth, and has an average depth of about nine hundred feet. The waters are clear and wholesome, and contain many kinds offish. In the north-west part there are two large bays, called Noquet’s and Green ; and on the east side there are also two, called Sable and Grand Traverse. Lake Michigan is connected with Lake Huron by the Straits of Michilimackinac, a channel forty miles in length from east to west, and four miles in breadth at the narrow¬ est part. Lake Huron is two hundred and eighty miles in length, about ninety miles in breadth, and has a medium depth of nine hundred feet. There are two large bays on this lake called Thunder and Sagana, the latter of which is about forty miles in length, by from eight to twelve in breadth. Lake Huron is connected with Lake St Clair by a strait of the same name, twenty-six miles in length, and having deep groves of beautiful white pine all along its banks. Lake St Clair is only twenty-four miles in length by forty in breadth, and about twenty feet in depth. It is connected with Lake Erie by the Strait of Detroit, which is twenty-four miles in length, narrow, and studded with islands, but navigable by large vessels. A rise and fall of water has been observed in some of these inland seas, par¬ ticularly at certain points of Lakes Michigan and Huron ; but the experiments instituted have failed to determine whether these are to be regarded as tides corresponding with the flux and reflux of the ocean. In the interior of this state there are great numbers of small lakes and ponds, from which the rivers chiefly derive their origin. In consequence of the level nature of this region, and from its being nearly surrounded by a belt of noble lakes, the climate is milder and more temperate than might have been expected from its latitude. The southern parts are, of course, more so than the northern, which is subjected to a Canadian temperature. The transition from the cold of spring to the heat of summer is rapid; but the change from summer to winter proceeds by slow degrees. .As generally characterising the climate, the spring may be termed wet and backward, with an average temperature of 50° of Fahrenheit j the summer dry, wuth a temperature of 80°; the autumn mild, with a temperature of from 60° to 65°; and the winter dry but cold, the temperature being only from 20° to 25° upon an average. The winter com¬ mences early in November, and does not terminate until the end of March. The climate throughout the whole state is considered as healthy. From the general fertility of the soil, the productions, as well natural as cultivated, are numerous. The wild rice or wild oats, which covers the marshes near the margins of the lakes and rivers, is a valu¬ able grain of the former class. The great varieties of fo¬ rest trees we have already noticed. Wheat, Indian corn, oats, barley, buck-wheat, potatoes, turnips, peas, apples, pears, plums, cherries, and peaches, are raised easily and in abundance; and no part of the United States is more abundantly supplied with fish, aquatic game, and wild fowls. The country is favourable to cultivated grasses, more so than the territory to the westward; and in all re¬ spects it is well adapted to farming operations. Possess¬ ing admirable facilities for commerce, Michigan enjoys considerable trade. A number of steam-boats are conti¬ nually plying upon the lakes, bays, and rivers, by far the largest proportion of which belong to Detroit, the capital. No inland country, considering its comparatively recent set¬ tlement, possesses a greater trade. The value of the imports for the year ending 30th September 1833 was 63,876 dol¬ lars, and the value of the exports for the same year was 9051 dollars; the whole consisting of domestic produce. 8 MICHIGAN. Michigan. Detroit is the political capital, and the only place of any “v'"'—" size in the state. It is situated upon the western bank of the river of the same name, eighteen miles from Lake Erie, and seven from Lake St Clair. It was settled as early as 1683 by the French from Canada, who penetrated these inland districts for the purpose -of prosecuting the fur trade. Its site is an elevation of between twenty and thirty feet above the level of the river, and the plain upon which it stands is adorned with beautiful and romantic scenery. The plan of the town upon the river, and for twelve hundred feet backwards, is rectangular ; behind this it is triangular. The streets are wide and airy, three of them running parallel to the river ; and these again are crossed at right angles by six other streets. It contains above four hundred houses, some of which are built of stone. The public edifices are, a council-house, State- house, United States store, a Presbyterian church, a Ro¬ man Catholic chapel, and other buildings. Three roads, constructed by the general government, terminate in the centre of this town ; the Chicago, leading to Illinois ; the Sigana, leading to the head of Sigana Bay; and the fort Gratiot, to the foot of Lake Huron. A United States road, leading from Detroit to Ohio, has also been com¬ pleted. Several wharfs project into the river, one of which is 140 feet long; and vessels of 400 tons burden can load and unload at its head. The population of this place in 1830 amounted to 2222, but it has since been greatly augmented. A strong and increasing tide of im¬ migration has set in; and as its situation is favourable for a very extensive inland commerce, it must rapidly rise into a town of considerable importance. Hitherto its pros¬ perity has depended principally on the precarious support afforded by the fur trade, the disbursement of public mo¬ nies whilst it was a military post, and the liberal appro¬ priations of government for public objects. But the set¬ tlement and cultivation of the surrounding country has advanced considerably, and the impulse and vitality which this has imparted to trade is already great. In 1834 it possessed thirteen steam-boats, one brig, thirty-three schooners, and thirty-five sloops, being an aggregate ton¬ nage of four thousand nine hundred and thirteen. A con¬ siderable number of these vessels trade between Detroit and Ohio; others go regularly to Buffalo and other pla¬ ces. All along the banks of the Detroit River are nume¬ rous mansions, chiefly built by the French. They are embosomed in ancient and rich orchards, all having an appearance of comfort, and some of splendour and opu¬ lence. Mackinac, or Michilimackinac, is a post-town and also a military post in this state. It is situated on an island of the same name, about nine miles in circumference, lying in the strait which connects Lakes Huron and Michigan. The town stands on the south-east side of the island, on a small cove, which is surrounded by a steep cliff one hun¬ dred and fifty feet in height. It consists of.two streets run¬ ning parallel with the lake, intersected by others at right angles, and contains a court-house, a jail, and several stores. It is much resorted to by fur traders, and during the sum¬ mer months is visited by thousands of Indians on their way to Drummond’s Island. On a cliff above the town is the fort, which is remarkably strong, indeed almost im¬ pregnable. The population of the island may be about 1000. There are a number of other islands in Lake Mi¬ chigan, the largest of which, called Manitou, is six miles in length and four in breadth. Fort Gratiot is a military post on St Clair River, and defends the entrance into Lake Huron. The Sault de St Marie is of importance as a mi¬ litary and trading post, being at the head of ship naviga¬ tion on the great lakes, and the grand thoroughfare of In¬ dian communication for the upper countries as far as the arctic circle, ad the fur trade of the north-west necessarily passing through it. The government of the United States Michigan, resolved to occupy this post, and in June 1820 obtained from the Chippewayan Indians the cession of a tract of land four miles square, commencing at the Sault, and ex¬ tending two miles up and the same distance down, with a depth of four miles. Michigan being now one of the prin¬ cipal points of immigration, a correct statement of the n umber of inhabitants is not to be expected. The counties into which the state of Michigan is divid¬ ed, the seats of justice, and the number of inhabitants, are shown in the following table. Topographical Table. Counties. Berrien Branch Calhoun...., Cass Jackson Kalmazoo... Lenawee.... Macomb.... Monroe Oakland.... St Clair St Joseph... Washtenaw, Wayne Population. Seats of Justice. Distance from Detroit. 1,787 764 3,280 1,865 3,124 7,911 6,035 6,055 8,542 13,844 2,244 3,168 14,920 16,638 Berrien Branch Eckford Cassopolis.... Jacksonburg. Bronson Tecumseh.... Mount Clemens Monroe Pontiac St Clair White Pigeon... Ann Arbour.... Detroit 180 133 100 160 77 137 63 25 36 26 60 125 42 The population, as shown in the above table, is 85,856, and it is given according to the census taken near the end of the year 1834. The number of counties at the com¬ mencement of the year 1836 was 36 ; and the population in July 1836 was supposed to amount to 120,000. The In¬ dians who reside in this state are chiefly the Ottawas, Miamies, Pottawattomies, Chippeways, and Wyandots. By different treaties they have ceded the greater part of their native soil to the United States; but they still retain some fine tracts of country, and have many reservations and villages even amongst the settlements. The Ottawas and ChippewayS are hunters and trappers. The former are the most agricultural in their habits ; and a band of this tribe have a flourishing settlement at L’Arbre Croche, on the western coast of Lake Huron. Some of the Indians have made »no inconsiderable advances in cultivation and the arts of civilized life. Most of the converts to Christi¬ anity are Roman Catholics; but the Protestants have within these few years established missionary stations and schools amongst them. Their numbers are gradually dimi¬ nishing, and the whole may not exceed 8000. The borders of St Clair River and Lake, Rivers Detroit, Raisin, Clinton, and Plaisance Bay at the mouth of the Raisin, are settled by French inhabitants. They occupy a belt of land upon the borders of these streams, three miles broad. They are civil, honest, unobtrusive, and industrious, with little education, and essentially deficient in enterprise. This state began to be regularly settled about the be¬ ginning of the last century. Under the French the govern¬ ment was arbitrary, uniting the civil and military authority in the power of a “ commandant.” In the year 1763 it pass¬ ed into the hands of the British, along with other posses¬ sions in this quarter, which had been wrested from the crown of France. By the treaty of Paris of 1783, the country was transferred to the United States; and al¬ though the British government held possession of the mi¬ litary posts until 1796, it ceased to exercise criminal juris¬ diction over it from that period. Subsequently it was M I C Michigan, erected into a district territorial government. Upon the breaking out of the last war with America, this state be¬ came the theatre of part of the military operations. Mac- kinack was captured by the British, and Chicago surren¬ dered to the savages. Soon afterwards the Americans made an inglorious surrender of Detroit, of which Britain held possession for a year. But the disastrous affair on Lake Erie, together with the subsequent defeat of the Bri¬ tish on land, changed the current of success, and Michigan was again amalgamated with the United States. For many years it continued to be only what is called a terri¬ tory, sending a delegate to Congress, who was elected bi¬ ennially, and might debate in the great council of the na¬ tion, but could not vote on any question. On the 11th of May 1835 a constitution was formed by a convention which met at Detroit, with a view to the erection of Michigan into a free and independent state. This being submitted to the people for ratification or rejection in the October fol¬ lowing, was approved of, and forwarded to congress, which, towards the close of the session of 1836, passed an act ad¬ mitting Michigan into the Union as a state. The follow¬ ing are some of the principal features of the constitution, taken from the American Almanac for 1836. The powers of the government are divided into three dis¬ tinct departments; the legislative, executive, and judicial. The legislative power is vested in a senate and house of re¬ presentatives. The representatives are chosen annually, and their number cannot be less than forty-eight, or greater than a hundred. The senators are chosen for two years, one half of them every year, and they consist as nearly as possible of one third of the number of the representatives. An enumeration of the inhabitants is to be made in 1837 and 184*5, and every ten years after the latter period; and after every enumeration so made, and also after each enu¬ meration made by order of the United States, the number of senators and representatives is to be apportioned anew amongst the several counties, according to the number of white inhabitants. The legislature meets on the first Mon¬ day in January every year. The executive power is vest¬ ed in a governor, who holds his office during two years, and a lieutenant-governor, who holds his office for the same period. The governor, lieutenant-governor, and members of the legislature, are chosen at the same time. The judicial power is vested in one supreme court, and in such other courts as the legislature may from time to time establish. The judges of the supreme court are ap¬ pointed by the governor, with the advice and consent of the senate, for the term of seven years. Judges of all county courts, associate judges of circuit courts, and judges of probate, are elected by the people, for the term of four¬ teen years. Each township is authorized to elect four jus¬ tices of the peace, who hold their offices for four years. In all elections every white male citizen above the age of twenty-one years, having resided six months immediately preceding any election, is entitled to vote at such election. Slavery, lotteries, and the sale of lottery tickets, are pro¬ hibited. The seat of government is at Detroit, or such other place or places as may be prescribed by law, until the year 1847, when it is to be permanently fixed by the legislature. The governor has power to nominate, with the advice and consent of the legislature, a superintendent of public instruction, who shall hold his office for two years, and whose duties are prescribed by law. The legislature is required to encourage, by all suitable means, the pro¬ motion of intellectual, scientific, and agricultural improve¬ ment. The proceeds of all lands which have been or may be granted by the Union to this state for the support of schools, and which shall hereafter be sold or disposed of, are to remain a perpetual fund, the interest of which, together with the rent of all such unsold lands, is to be inviolably appropriated to the support of schools through- vol. xv. MIC 9 out this state. The legislature is to provide for a system Mickle, of common schools, by which a school may be kept up and '""■'■'v— supported in each district at least three months in the year ; and any district neglecting to keep and support such a school may be deprived of its equal proportion of the interest of the public fund. Besides the state of Michigan, there is a tract of coun¬ try lying to the westward of Lake Michigan, which goes by the same name, and is attached to the state without being included in it. This region is bounded on the east by Lake Michigan, on the north by Lake Superior and the chain of small lakes connecting that inland sea with the heads of the Mississippi, and on the west and north-west by the Upper Mississippi. It has not been thoroughly explor¬ ed ; but, judging of the whole from those portions which have been examined, it is likely to become of great inte¬ rest and importance as its natural resources are deve¬ loped. The district included between the Fox and Wis- cousin Rivers is particularly inviting. The soil is a rich black alluvial mould, irrigated by innumerable streams of water, unbroken by mountain ridges, and in all respects ad¬ mirably adapted for agriculture. From its northern boun¬ dary south to the Milwalky and the heads of Rock River, it is covered with a dense forest, which, as traced farther down to the southern head of Lake Michigan, opens into fertile and extensive prairies. It has been remarked as a geological characteristic, that the pebbles which are usually found upon the surface of these prairies, and to a depth of two or three feet downwards, are entirely wanting. Clay constitutes the succeeding stratum. More than 36,000,000 pounds of lead were yielded by the mining district in this region from the autumn of 1824 to that of 1829. Strong indications of the presence of copper appear on the south¬ ern shore of Lake Superior. By the treaty of Prairie du Chien, which was entered into in 1829, the^United States purchased from several Indian tribes a tract of about six millions of acres of land, of which between two and three millions are supposed to be within the limits of the terri¬ tory. About one hundred and thirty-two thousand acres in the vicinity of Green Bay have likewise been ceded. The former cession comprehends nearly all the mining dis- . trict of the Upper Mississippi, and is occupied by various Indian tribes. The white population, which is confined chiefly to Green Bay, is estimated at six thousand. Mili¬ tary posts are established at Green Bay, Prairie du Chien, Fort Snelling on the river St Peters, and Fort Winne¬ bago at the portage of the Fox and Wiscousin Rivers. Settlements more or less extensive have been formed at Green Bay, Pembino on Red River, Lake Winnepeg, Prairie du Chien, the Mississippi, and the lead mine bor¬ dering on the latter river and the Wiscousin. (r. r. r.) MICKLE, William Julius, the translator of the Lu- siad, was the son of Mr Alexander Mickle, a Scottish clergyman, who had formerly been a dissenting minister in London, an assistant to Dr Watts, and one of the trans¬ lators of Bayle’s Dictionary. He was born in London about the year 1735, and educated by his father, after whose death he came to Edinburgh to reside with his uncle, who was a brewer there, and who admitted him into a share of his business; but not being qualified to succeed in this line, he went to London about the time of the conclusion of the war which began in 1755, with a view to procure a commission in the marine service. In this he was disappointed; but he introduced himself to the first Lord Lyttelton, to whom he sent one of his poems. From his lordship, however, he received no other favour than that of being admitted to several interviews, and en¬ couraged to persevere in his poetical plans. From the time of Mr Mickle’s arrival in London till the year 1765, it is not known how he employed his time, although it is probable that he was occupied in some branch £ 10 M I C Micro- of the printing business ; and in that year he engaged him- tnoter. self as corrector to the Clarendon press. From this time till 1770, he published several small pieces in prose and verse, which brought him into some notice ; and he was likewise a frequent writer in the Whitehall Evening Post. When not more than seventeen 3rears of age, he had read Gas- tara's translation of the Lusiad of Camoens into French, and then projected the design of giving an English ver¬ sion of that poem. This, however, he was prevented from executing by various avocations till the year 1771, when he published the first book as a specimen ; and having prepared himself by acquiring some knowledge of the Portuguese language, he determined to apply himself en¬ tirely to the task of translation. With this view he quitted his residence at Oxford, and went to a farm-house at Forest Hill, where he pursued his design with unremitting assiduity till the year 1775, when the work was completed. During the time that Mr Mickle was engaged in this work, he subsisted entirely by his employment as correc¬ tor of the press; and on his quitting that employment he had only the subscriptions which he received for his trans¬ lation to support him. But notwithstanding these difficul¬ ties, he adhered steadily to the plan he laid down, and completed his task in about five years. When his work had been finished, Mr Mickle applied to a person of high rank, with whom his family had been con¬ nected, for permission to dedicate it to him. The permission sought was granted, and his patron honoured him with a very polite letter ; but after receiving a copy, the latter did not think prop'er to take any notice of the author. The applause with which the work was received, however, soon banished from the author’s mind the disagreeable sensa¬ tions which had been occasioned by the contemptuous ne¬ glect of his patron, as well as some severe criticisms which M "I C had been circulated concerning it. A second edition was Micone prepared in 1778; and whilst he was meditating a publi- II cation of all his poems, he was appointed secretary to Commodore Johnstone, who had obtained the command ^ of the Romney. In November 1779 he arrived at Lisbon, and was appointed by his patron joint agent for the prizes which were taken. . In June 1782 Mr Mickle married Miss Tomkins, daughter of the person with whom he had resided at Forest Hill whilst engaged in translating the Lusiad. Having received some fortune with this lady, and made a little money himself when in the service of Commodore Johnstone, he now en¬ joyed a comfortable independence. He afterwards fixed his residence at Wheatley, in Oxfordshire, where he died after a short illness, on the 25th of October 1788, leaving a son behind him. His poetry possesses considerable beauty, variety, and harmony of numbers. His life was without reproach; his foibles were few and inoffensive, his virtues many, and his genius respectable. MICONE, an island of the Archipelago, in the Turkish province of Andros, which, with the small islands which sur¬ round it, contains forty-six square miles, and about 6000 • inhabitants, living in one town of the same name, and in many detached rural hamlets. Although the soil is not good, and there is a scarcity of water, yet much wine and some corn, besides olives and figs, are produced. A great number of seamen*are educated in the island. There are very few Turks, except the officers of government. Long. 25. 59. E. Lat. 37. 30. N. MICROCOSM, a Greek term signifying a little world, and used by some for man, who is supposed to be an epi¬ tome of the universe or great world. MICROGRAPHY, the description of objects viewed with the assistance of a microscope. See Microscopic Objects. MICROMETER. Micrometer, from /i/zpo;, small, and [tsrzov, a measure, is the name of an instrument generally applied to tele¬ scopes and microscopes, for measuring small angular dis¬ tances within the field of the former, or the size of small objects within that of the latter. Previously to the invention of the telescope, astronomers experienced great difficulty in measuring small angles in the heavens ; but we may safely infer from the observa¬ tions of Hipparchus, that he had succeeded, either by the actual division of his instruments, or by estimation, in determining celestial arcs to one third of a degree. When the telescope was applied by Galileo, and our countryman Harriot, to the examination of the solar spots, it does not appear that they executed their drawings from any other than estimated measures. This indeed seems quite certain in the case of Harriot, whose original sketches we have had an opportunity of inspecting.' The elaborate solar observations of Scheiner made in 1611, with a tele¬ scope on a polar axis, and published in 1630 in his Rosa Ursina, though minutely laid down, and performed with great care, were certainly made without any instrument for subdividing the field of view. Gascoigne. As telescopic observations, however, multiplied, astro¬ nomers felt the necessity of having something more accu¬ rate than their eye for ascertaining minute distances in the heavens ; and there can be no doubt that a micrometer was invented by our countryman Mr Gascoigne, previous to 1640, not long after the publication of the Rosa Ursina. According to the description of it which he addressed in a letter to Mr Oughtred, and to the account of one of Gascoigne’s own instruments which Dr Hooke examined, its construction is as follows:—A small cylinder, stretch- , ing across the eye-tube of the telescope, is cut into a fine screw throughout one third of its length, the other two thirds being formed into a coarser screw, with threads at twice the distance. This compound screw is confined at both ends to its place, the fine part of it passing through a female screw in one bar, and the coarse part through a female screw in another bar, these two bars being grooved into each other, as in a sliding rule. Hence, if a nicely ground edge is fixed to one bar, and another to the other * bar, so that these edges are accurately parallel, a motion of the screw round its axis will separate these two edges, and each edge will move with a different velocity. The parts of a revolution are measured by an index and divided face, at the coarse end of the screw, while the number of whole revolutions is measured by a graduated bar moved by the coarse screw. The fine screw serves the purpose of keeping the middle part of this variable field (or the open¬ ing between the edges) in the axis or line of collimation of the telescope ; for while the coarse screw moves the edge which it carries from the other edge considered as fixed, the fine screw moves both the edges, and indeed the whole frame, in an opposite direction, with one half of the velocity, an effect which is produced by fixing its bar to the tube of the telescope.1 As Mr Gascoigne fell in the civil wars, near Y’ork, in 1644, before he had given any full account of his invention, and its application to as- . 1 See Phil. Trans. No. 29, p. 540, Nov. 1667 ; Lowthorp’s Abridgment, voh i. p. 226 ; and Costard’s History of Astronomy. MICROMETER. 11 Introduc¬ tion. Hooke. Mai vasia. Auzout. tronomy, we are indebted to Mr Richard Townley, into whose hands one of the instruments fell, for the preserva¬ tion of so valuable a relic. Mr Townley informs us that Mr Gascoigne had made use of his micrometer for some vears before the civil wars, and had measured distances on the earth, determined the diameters of the planets, and erfdeavoured to find the moon’s distance from two obser¬ vations of her horizontal and meridional diameters. Mr Townley’s instrument was of the size and weight of “ an ordinary pocket watch.” It marked 40,000 divisions in a foot, 2^ divisions corresponding to a second of space. Mr Townley had it improved by a common watchmaker. Flamsteed was presented with one of the instruments in 1670, by Sir Jonas Moore ; but though he left three gui¬ neas with Mr Collins to get proper glasses made for it, he could not procure them till autumn 1671, when he began his observations with it at Derby, and continued them with it in 1671, 1672, 1673, and'1674.1 He informs us that Townley’s improvement consisted in substituting one screw for two. He mentions also that Gascoigne had, in August 1640, measured with his micrometer the diame¬ ters of the sun and moon, and the relative distances of the stars in the Pleiades. Dr Hooke made an important improvement in this mi¬ crometer, by substituting parallel hairs for the parallel edges of the brass plates;2 and Dr Pearson conjectures that he had adopted this construction in his zenith sector, by which he proposed, in his dispute with Hevelius, to measure single seconds. It would appear, from the Ephemerides of the Marquis of Malvasia, published in the year 1662, that he had measured the distances of stars, and the diameters of the planets, and projected the lunar spots, by means of a reticle of silver wire fixed in the focus of the eye-glass of his telescope. In order to determine the distances of the wires which composed this network, he turned it round till a star moved along one of the wires, and having counted the number of seconds which the star took to pass over the different dis¬ tances between the wires, he obtained a very accurate scale for all micrometrical purposes. About the year 1666, MM. Auzout and Picard, unac¬ quainted with what had been done by Gascoigne, pub¬ lished an account of a micrometer.3 Auzout’s microme- Huygens. ter is said to have divided a foot into 24,000 or 30,000 parts. It resembled the Marquis of Malvasia’s, with this difference, that the divisions were measured by a screw, and he sometimes employed fibres of silk in place of silver wires. The celebrated Christian Huygens was also an early inventor of micrometrical methods ; and the subject wras prosecuted with great diligence and success by Cassini, Roemer, Bradley, Savary, Bouguer, Dollond, Maskelyne, Ramsden, Sir W. Herschel, Troughton, Wollaston, Arago, Fraunhofer, and Amici. In giving an account of the inventions and methods of these various authors, we shall adopt the following ar¬ rangement :— 1. Description of wire-micrometers in which the wires are moved by one or more screws. 2. Description of wire-micrometers in which the angu¬ lar distance of the wires is varied optically, by changing the magnifying power of the telescope. 3. Description of double-image micrometers in which two singly refracting lenses, semi-lenses, or prisms, are separated by screws. 4. Description of double-image micrometers in which the two images formed by two singly refracting lenses, semi-lenses, or prisms, are separated optically. 5. Description of double-image micrometers in which the twro images are formed by double refraction. 6. Description of position-micrometers. 7. Description of the lamp-micrometer, and the lucid disc micrometer. 8. Description of fixed micrometers with an invariable scale. 9. Description of micrometers for microscopes. Wire-Mi¬ crometers. CHAP. I DESCRIPTION OF WIRE-MICROMETERS IN WHICH THE WIRES ARE MOVED BY MEANS OF ONE OR MORE SCREWS. The micrometer of Gascoigne, when furnished with Trough- hairs, as suggested by Dr Hooke, embodies the principle ton’s wire- of the best and most recent micrometers. Instruments on nncrome- this construction have been made by all our eminent opti-tGr' cians ; but we have no hesitation in saying, that the micro¬ meter constructed by the late celebrated artist Mr 1 rough- ton combines all the ingenuity which has been displayed in this delicate and useful apparatus. This eye-piece, and micrometer attached to it, are shown in Plate CCCLVII. fig. 1, 2, and 3, where fig. 1 is a horizontal section in the direc¬ tion of the axis of the telescope. The eye-piece AB con¬ sists of two plano-convex lenses A, B, of nearly the same focal length, and the two convex sides facing each other. They are placed at a distance less than the focal length of A, so that the wires of the micrometer, which must be dis¬ tinctly seen, are beyond B. This arrangement gives a fiat field, and prevents any distortion of the object. This eye-piece slides into the tube CD, which screws into the brass ring EF, through two openings, in which the oblong frame MW passes. A brass circle GH, fixed to the tele¬ scope by the screw' I, has rack-teeth on its circumference, that receive the teeth of an endless screw W, which, be¬ ing fixed by the arms XX to the oblong box MN, gives the latter and the eye-piece a motion of rotation round the axis of the telescope ; and an index upon this box points out on the graduated circle upon GH, fig. 3, the angular motion of the eye-piece. The micrometer properly so called is shown in fig. 2, where K, L are two forks, each connected with a screw O and P, turned by the milled heads M and N. These forks are so fitted as to have no lateral shake. Two pins Q, R, with spiral springs coiled round them, pass loosely through holes in the forks K, L, so that when the forks are pressed by their screws towards Q.and R, the spiral springs resist them, and consequently push them back when the screws are turned in the oppo¬ site direction. Two fine hairs, or wires, or spiders’ lines, S, T, are stretched across the forks, the one being fixed to the in¬ ner fork K, and the other to the outer fork L, so as to be perfectly parallel, and not to come in contact when they pass or eclipse one another, in which case they will appear as one line. A wire ST is stretched across the centre of the field, perpendicular to the parallel wires. The most difficult part of this instrument in the execu¬ tion, as well as the most important, is the screw or screws which move the forks. The threads must not only be at the same distance, but have their inclination equal all round. In the screw used by Troughton, there are about 103'6 threads in an inch. On the right hand of the line ST, fig. 2, is seen a scale, which indicates a complete revo¬ lution of either screw, the small round hole being the zero. This hole is bisected when the two lines appear as one. In using this instrument, we separate the wires by their respective screws, till the object to be measured is exactly 1 See Mr Baily’s Account of the Reverend John Flamsteed, 1835, p. 24, 29, &c. 2 Hooke’s Posthumous W orks, p. 497-8. 3 Phih Trans. No. 21, p. 373, January 1660. 12 MICROMETER. Wire-Mi- crometers. Methods of finding the value of a revo¬ lution of the screw. New me¬ thod. Fibres for microme¬ ters. included between them. The number of revolutions and parts of a revolution necessary to bring the two wires into the position of zero, will then be a measure of the angle required, provided the value of a revolution has been pre¬ viously ascertained with accuracy. The easiest method of ascertaining the value of a revo¬ lution of the screw, according to the late Dr Pearson, who devoted much attention to this subject, is to ascertain how many revolutions and parts of one measure exactly the sun’s vertical diameter in summer, when his altitude is such that the refraction of both limbs is almost the same. The sun’s diameter in seconds being divided by that num¬ ber, the quotient will be the value of a single revolution, the sun’s diameter having been corrected by the differ¬ ence between the refraction of his two limbs. The ordi¬ nary method of ascertaining the value of a revolution is, to observe accurately the time taken by an equatorial star, or a star of known declination reduced to the equator, to pass over the space between the wires when at a distance, and to convert this time into degrees, at the rate of 15° per hour. The number of degrees, minutes, and seconds, divided by the revolutions and parts of a revolution which are necessary to bring both wires into zero, will give the value of one revolution of the screw. The same thing may be done by measuring a base with great accuracy, and observing the space comprehended between the wires at that distance. The angular magnitude of this space, divided by the number of revolutions of the screws which bring the wires to zero, will be the value of each. A most elegant and accurate method has been recently employed, we believe by Professor Gauss of Gottingen, for measuring the value of the revolutions of micrometer screws. He employs for this purpose a standard telescope, with a micrometer the value of whose scale has been ac¬ curately determined. Since the wires of a telescope-mi¬ crometer adjusted to distinct vision of the stars or planets are accurately in the focus of parallel rays falling on the. object-glass, it follows, that rays issuing from the wires and falling on the inside of the object-glass, will emerge from it perfectly parallel. Now, if we place the object-glass of the standard telescope close or near to that of the first telescope, the parallel rays formed by those issuing from its wires will be refracted to the focus of the standard tele¬ scope, and a distinct image of the wires will be there formed. The observer, therefore, when he looks into the standard telescope, will see distinctly the wires of the first telescope, and, by means of his micrometer, he will be able to measure exactly the angular distance of these wires, at whatever distance they happen to be placed. This angular distance divided by the revolutions and parts of a revolution which are necessary to bring the wires of the first telescope to the zero of their scale, will give the value of one revolu¬ tion of the screw, or of one unit of the scale on the right hand of the long wire ST, fig. 2. The most essential parts of a micrometer are the paral¬ lel fibres, which require not only to be extremely fine, but of an uniform diameter throughout. Gascoigne, as we have seen, employed the edges of brass plates, Dr Hooke hairs, and subsequent astronomers wires and fibres of silk. Fontana, in 1775, recommended the spider’s line as a sub¬ stitute for wires, and he is said (we think erroneously) to have obtained them so fine as the 8000th part of a line. Mr Troughton had the merit of introducing the spider’s line, which he found to be so fine, opaque, and elastic, as to answer all the purposes of practical astronomy. This distinguished artist, however, informed the writer of this article, that it was only the stretcher, or the long line which sustains the web, which possesses these useful properties. Sir David Brewster has employed the fibres of spun glass, which are bisected longitudinally with a fine transparent line about the yo^Q-th of an inch in diameter. This central line increases with the diameter of the fibre, and diminishes Wire-Mi. with the refractive power of the glass. In cases of emer- crometera. gency, the fibres of melted sealing-wax may be advantage- ously employed, or, as recommended by Professor Wallace, the fibres of asbestos. We have found crystals of mesolite so minute and regular as to be well adapted for the same purpose. The art of forming silver wire of extreme minuteness w0llas- has been perfected by Dr Wollaston. Having placed a ton’s fine small platinum wire in the axis of a cylindrical mould, he wires, poured melted silver into the mould, so that the platinum wire formed the axis of the silver cylinder. The silver was now drawn out in the usual way, till its diameter was about the 300th of an inch, so that if the platinum wire was at first jQth of the diameter of the silver cylin¬ der, it will now be reduced to the 3000th part of an inch. The silver wire is now bent into the form of the letter U, and a hook being made at each of its ends, it is suspended by a gold wire in hot nitric acid. The silver is speedily dissolved by the acid, excepting at its ends, and the fine platinum wire which formed its axis remains untouched. In this way Dr Wollaston succeeded in forming wire ^ly^th, jy^th, and even ygjjgoth of an inch in diameter. When the fibres are prepared, their ends are placed in parallel scratches or grooves drawn on the forks, or, in other cases, on the diaphragm or field bar, and fixed by a layer of bees’ wax or varnish, or, what is more secure, by pinching them with a small screw-nail near their extremities. For a great deal of valuable practical information respecting the con¬ struction and use of the wire-micrometer, the reader is re¬ ferred to the late Dr Pearson’s Introduction to Practical Astronomy (vol. ii. p. 99, 110, 115, &c.), where valuable tables will be found for facilitating the application of the micrometer, both to celestial and terrestrial purposes. See also Sir John Herschel and Sir James South’s Observations of SSO Double and Triple Starsfp. 22, 23), containing tables of the values of Troughton’s screws. CHAP. II. DESCRIPTION OF WIRE-MICROMETERS IN WHICH THE ANGULAR DISTANCE OF THE WIRES IS VARIED OP¬ TICALLY BY CHANGING THE MAGNIFYING POWER OF THE TELESCOPE. MM. Roemer and De la Hire first conceived the ideaiioemer, of varying the angular magnitude of the meshes of a net of silver wire fixed in the focus of the eye-glass of a tele¬ scope, for the purpose of measuring the digits of eclipses. This was done by a second lens moving between the wires and the object-glass. The late Mr Watt informed the writer of this article that he had used a similar principle, but had never published any account of it. The plan of opening and shutting a pair of parallel wires optically instead of mechanically, and of using it as a ge¬ neral principle in micrometers, was first adopted by Sir David Brewster, and has been applied to a variety of me¬ thods of varying the magnifying power of the telescope. The general principle will be readily understood from the annexed diagram, where AB, CD are two wires or lines of any Fig. 1. kind permanently fixed in the fo¬ cus of the eye-glass of a telescope. If the sun SV is in contact with the lower wire CD, it is obvious, that if we increase the magnifying power of the telescope by any op¬ tical means anterior to the wires, c we may magnify or expand the sun’s disc SY, till it becomes Ss, when its north or upper limb will exactly touch the upper wire AB. Now if the sun’s diameter happens to be ‘3F MICROMETER. 13 Wire-Mi- when its disc Ss just fills the space between the wires crometers. .AB, CD, the distance of the wires must have been 62' v—^ when, as at S's', it fills only half that space. Hence the wires have been moved optically, so to speak, and have subtended all angles between 31' and 62'. The methods of varying the magnifying power of the telescope used by Sir David Brewster, consist, 1, in vary¬ ing the distance of the two parts of the achromatic eye¬ piece ; and, 2, by varying the focal length of the princi¬ pal object-glass by means of another object-glass, either convex or concave, moving between it and its principal focus. Eye-glass The first of these methods is shown in fig. 2, where AB microme¬ ter. Fig. 2. is the eye-piece with its four lenses, A, C, D, B, in their natural position. The part AFG, with the two lenses A, C, is fixed to the telescope, and a space is left between the tube AC and the outer tube AFG, to allow the moveable part DB of the eye-piece to get sufficiently near the lens C. The tube DB is moved out and in by a rack and pi¬ nion E. A scale is formed on the upper surface mn, and subdivided in the usual manner with a lens and vernier, which it is unnecessary to represent in the figure. The value of the divisions of the scale are determined by direct experiment. A motion of DB through a space of four inches will, generally speaking, double the magnifying power of the telescope. Object- The best method, however, of varying the magnifying glass mi- power of the telescope is the second, which is shown in crometer. ^ where O is the object-glass,/its principal focus, and Fig. 3. L the second lens, which is moveable between O and / Parallel rays HR, after being refracted by O, so that they would converge to f, are intercepted by L, which conver¬ ges them to F, the focus of the combined lenses. The ef¬ fect of the lens L is therefore to diminish the focal length of the object-glass, and consequently the magnifying power of the telescope, which will obviously be a minimum when the lens L is at /, and a maximum when it is at V. The angle subtended by a pair of fixed wires will suffer an op¬ posite change to the magnifying power, being a maximum when the lens L is at /, and a minimum when it is at- Hence the scale for measuring the variable angle of these wires may always be equal to the focal length of the ob¬ ject-glass O ; and the inventor of the instrument has shown, both by theory and by experiment, that the scale is one of equal parts, the variations in the angle of the fixed wires being proportional to the variations in the po¬ sition of the moveable lens. When we wish to measure angles that do not suffer a great change, such as the diameters of the sun and moon, a scale less than the focal length of the object-glass will be sufficient. For example, if we take a lens L, which by a motion of ten inches varies the magnifying power from 40 to 35, then, if the angle of the wires is 29' when the lens L is at C, it will be 33' 9" when the lens is ten inches from or the magnifying power 35. We have, therefore, a scale of ten inches to measure a change of angle of 4' 9'', Wire-Mi- so that every tenth of an inch will correspond to 3"*3, and crometers.^ every 100th of an inch to ^d of a second. Such a micro- meter w-ill serve to measure the diameters of the sun and moon at their various distances from the earth. If we wish to measure the distances of some double stars, or the diameters of some of the smaller planets, with a te¬ lescope whose magnifying power varies from 300 to 240, by the motion of a lens over ten inches, place the parallel wires at a distance of 40", which will be increased to 50" by the motion of the lens. Hence we have a scale of ten inches to measure ten seconds, or the tenth of an inch to measure one second, or the 100th oftm inch to measure Tiyth of a second. Several pairs of wires placed at different distances might be fixed upon the same diaphragm, or upon separate dia¬ phragms, which could be brought into the focus when wanted; and the second pair of wires might be placed at such a distance that their least angle was equal to the largest angle of the first pair, and so on with the rest. A wire-micrometer thus constructed is certainly free from almost all the sources of error which affect the common moveable wire-micrometer. The errors arising from the imperfection of the screw, the uncertainty of zero, and other causes, are avoided; and the wires are al¬ ways equidistant from the centre of the field, so as to be equally affected by any optical imperfection in the tele¬ scope. The scale indeed may be formed by direct expe¬ riment, and the results will be as free from error as the ex¬ periments by which the scale was made. When this micrometer is applied to a portable telescope, it becomes of great use in naval, military, or geodetical operations, and is employed in measuring distances, either by taking the angle subtended by a body of known dimen¬ sions, or by measuring the two angles subtended by a body of unknown dimensions from the two extremities of a known or measured base. For these purposes the tele¬ scope is fitted up without a stand, as shown in Plate CCCLYII. fig. 4. The principle of separating a pair of wires optically is singularly applicable to the Gregorian and Cassegrainian telescopes, where no additional lens or mirror is required. As the magnifying power of both these telescopes may be increased merely by increasing the distance of the eye¬ piece from the great speculum, and then re-adjusting the small speculum to distinct vision, we can thus vary the angle of a pair of fixed wires by making the eye-piece moveable. This will be easily comprehended from the annexed figure, where SS is the great speculum of a Gregorian reflector, AA the tube, M the small speculum, whose focus is G, and centre of curvature H. It is fixed to an arm MQ, moveable to and from SS in the usual way. The image RV is that formed by the speculum SS, and r"R" that Fig. 4. formed by the small speculum. This last image being in the focus of the eye-glass E, will be seen distinct and mag¬ nified. If the eye-glass E is pulled out to E', then, in order that the object may be seen distinctly, the image r"R" must be brought into the position r'"R'", FF' being equal to EE'; but this can be done only by advancing the small speculum M to M',/and F' being now the conjugate 14 MICROMETER. Double- Image Microme¬ ters. Rbemer. Savary. Dollond. foci of M. But by this process the magnifying power has been considerably increased, because the part of the whole MF magnifying power produced by M was equal to where- . . M'F , , . M/ as it is now a much larger quantity. The angle sub¬ tended by the wires has therefore been diminished in the same proportion as the magnifying power has been in¬ creased. The scale, in this case, is not one of equal parts, but after the extreme points of it have been determined experimentally, the rest may be filled up either by calcu¬ lation or direct experiment. Dr Pearson1 has, with singular inaccuracy, stated that Sir David Brewster’s “ patent micrometer is not competent to measure very small angles, even if it had sufficient mag- nifying power.” If he means the patent micrometer as made by Mr Harris, as a naval and military telescope for measuring distances, or as a coming-up glass, he is quite right, because the power of measuring small angles is not required for these practical purposes. But it is quite evi¬ dent that the smallest angles can be measured by the mi¬ crometer when fitted up for astronomical purposes. We have only to use a pair of wires placed at a very small dis¬ tance, or a pair of semi-lenses whose centres are placed at a very small distance, and then vary their angles till it be¬ comes equal to the very small angle which we wish to measure. CHAP. III. DESCRIPTION OF DOUBLE-IMAGE MICROME¬ TERS IN WHICH TWO SINGLY REFRACTING LENSES, SE¬ MI-LENSES, OR PRISMS, ARE SEPARATED BY SCREWS. M. Rbemer, the celebrated Danish astronomer, is said to have been the first who suggested the use of a double¬ image micrometer. He did this about 1678, but the idea does not seem to have been carried into effect, or known to his successors. Nearly seventy years afterwards, viz. in 1743, Mr Servington Savary, of Exeter, communicated to the Royal Society an account of a double-image micro¬ meter ; and five years afterwards, in 1748, the celebrated Bouguer proposed the very same construction, which he called a heliometer. This instrument consisted of two' lenses, which could be separated and made to approach each other by a screw or other mechanical means. These lenses gave double images of every object; and when the two images of any object, such as the sun or moon, were separated till they exactly touched one another, the dis¬ tance of the object-glasses afforded a measure of the solar or lunar diameter, after an experimental value of the divi¬ sions of the scale had been obtained. As two complete lenses, however, must always have their least distance equal to the diameter of either, this instrument was incapable of measuring the diameters of small bodies. This obvious defect no doubt led John Dol¬ lond, in 1753, to the happy idea of the divided object-glass micrometer, in which the two halves of an object-glass are made to recede from the position in which they form a com¬ plete object-glass. When the centres of the two halves coin¬ cide, they obviously form one lens, and give only one image. When the centres are slightly separated the images will be slightly separated; and small objects may be brought into contact, and have the angles which they subtend ac¬ curately measured. The scale will, therefore, have a zero corresponding to the coincidence of the centres of the semi-lenses. The principle of this instrument will be un¬ derstood from fig. 5, where H, E are two semi-lenses, whose centres are at H, E, and F their focus. If PQ be a circular object whose diameter is to be measured, or P, Q two points whose angular distance is to be determined, the lenses are to be separated Fig. 5. till the two images x, z are in contact at F. As the rays QHF, PEF pass unrefracted through the centres H, E of the semi-lenses, the angle subtended by QP will be equal to the angle HFE, or that which the distance of the centres of the semi-lenses subtends at F. As the angles, therefore, are very small, they'will vary as HE ; and when the angles corresponding to any one distance of the centres is determined, those for any other distance will be ascertained by simple proportion. Mr Dollond, who had not at this time in¬ vented the achromatic telescope, applied his micrometer to the object end of a re¬ flecting telescope, as shown in Plate CCCLVII. fig. 5, which represents the mi¬ crometer as seen from beyond the object end of the reflector. A piece of tube B, carrying the micrometer, slides into or over the tube A of the telescope, and is fast¬ ened to it by a screw. The tube B carries a wheel (not seen in the figure) formed of a ring racked at the outer edge, and fixed* M the brass plate CC, so that a pinion moved by the handle D may turn it into any position. Two plates F, G are kept close to the plate CC by the rabbeted bars H, H, but with so much play that they can move in contrary directions by turning the handle E, which drives a concealed pinion that works in the two racks seen in the highest part of the figure. As the two semi-lenses are fixed to the plates F, G, their centres will be separated by the action of the handle E, and their degree of separation is measured by a scale of five inches subdivided into 20ths of an inch, and read off by a ver¬ nier on the plate F, divided into 25 parts, corresponding to 24 of the scale, so that we can measure the separation of the semi-lenses to the j^th of an inch. The vernier is seen to the right of H, and may be adjusted to the zero of the scale, or the position of the lenses when they give only one image, by means of the thumb-screw I, a motion of the vernier being permitted by the screws which fix it to the plate F passing through oblong holes.2 In this construction, the micrometer is too far from the observer, and destroys the equilibrium of the telescope. The instrument itself, however, has more serious defects, as it has been found that the measures of the sun’s diameter, taken by different observers/with the same instrument, and at the same time, differ so much as 12 or 15 seconds. This defect has been ascribed to the different states of the observers’ eyes, according as they have a tendency to give distinct vision within or beyond the focal point, where the image is most perfect; in the former case the limbs being somewhat separated, and in the latter overlapping. M. Mosotti, in the Effemeride of Milan for 1821, has discov¬ ered the true cause of this defect, by a series of accurate experiments which he made with this micrometer attached to a Gregorian reflector of two feet in focal length. The focal length of the divided object-glass was 511-3357 inches, or 42 feet 7^ inches. M. Mosotti has shown that a diver¬ sity of measures will be obtained by the same observer, if, for the purpose of obtaining distinct vision, he gives a slight displacement to the small speculum by the adjusting screw. If the position of this speculum which gives dis¬ tinct vision were a point, it would be easy to find that point; but as distinct vision may be obtained within a Double Image Micromi ters. 1 Introduction to Practical Astronomy, vol. ii. ’ Phil. Trans, vol. xlviii. MICROMETER. 15 Double- space of 10 or 12 thousandths of an inch, owing to aber- Image ration, every different observer will place the mirror at a Microme- different point within that range, and consequently ob- ters’ tain a measure corresponding to the image which he views. M. Mosotti recommends that the axis of the ad¬ justing screw, which carries the small speculum, should carry a vernier connected with a scale on the outer sur¬ face of the tube A. By means of this vernier the observer is able to give a fixed position to the small speculum, so that he always views the same image, and is thus sure of obtaining the same measure of the same object, so far as the observation is concerned. M. Mosotti found also that the measures were affected by a change of temperature, which, by changing the length of the tube, displaced the small speculum. In his instrument this displacement amounted to 0-0075 of an inch, which, he has shown, cor¬ responds to a change of focal length from 511-3357 to 5l4-84j inches ; and that the error from this cause, upon a length of 30', will be 13" in excess. The following is Dr Pearson’s enumeration of the differ¬ ent sources of error in the divided object-glass microme¬ ter when applied to reflectors. 1. A variation in the position of the small mirror when the eye estimates the point of distinct vision. 2. A displacement of the small mirror by change of temperature. 3. A change of focal distance when central and extreme rays are indiscriminately used. The amount of this error depends on the aberration of the semi-lenses. 4. A defect of adjustment, or of perfect figure, in the two specula, as they regard each other, the measures varying when taken in different directions. In order to enable Dollond’s micrometer to measure dif¬ ferences of declination and right ascension, Dr Maskelyne introduced the aid of cross wires, which he fixed in a move- able ring at the place where the double image is formed. One or both of the two pla¬ nets or stars are referred to one or other of these lines, as will be seen in the annex¬ ed figure, which we take as an example, out of four cases. Let ENWS be the field of view, NS the meridian, and EW the line of east and west; then, in order to obtain the difference of right ascension and declination of two stars, he opened the semi-lenses till he obtained double images of each star. He then turned round the micrometer till the two images of the first star passed over the vertical wire NS at the same instant, and having counted the time that elapsed till the two images of the other star passed over the same line, he had the difference of right ascension in time. By means of the screw which elevated his telescope, and partly by opening the semklenses, he made the north image of one star, and the south image of the other, as at A, B, describe in their motion the horizontal wire EW, and at that position of the semi-lenses the scale indicated the difference of declination. Fig. 6. IS* Mr Dol- A very important improvement upon the divided object- lond’s im- glass micrometer’ was made by Mr Dollond’s son, who menT* adapted it to a refracting telescope, and removed the dif¬ ferent sources of error to which it had been found liable. This improvement consists both in the nature, form, and position of the semi-lenses. The semi-lenses are made con¬ cave, and consist of crown and flint glass, so as to give an achromatic image along with the object-glass of the tele¬ scope to which they are applied. These concave semi- Double¬ lenses, of course, lengthen the focal distance of that object- Image glass. When a circular lens was bisected, as in the old construction, the metallic parts which held the semi-lenses v . obstructed the light in proportion to their separation ; a defect of a serious nature in an instrument. In order to correct this evil, Mr J. Dollond substituted two long slices of glass cut from the diametral portion of a lens nearly six inches in diameter. Hence, in every position of these oblong semi-lenses, none of the metallic setting comes be¬ fore the object-glass, and consequently the light is never obstructed, and is always of the same amount, whatever be the separation of the lenses. In the old construction, where the diameters of each lens slid along each other in contact, a part of the central portions having been re¬ moved by grinding the diameters smooth, the two images of an object never could coincide so as to give an accurate zerobut in the new construction, the space equal to what was removed by grinding is filled up with a brass scale and vernier, and the only evil of this is the loss of light cor¬ responding to the thickness of this scale; but this trifling defect is amply compensated by the perfect coincidence of the images at zero. This important instrument is shown in Plate CCCLVII. fig. 6, where the same letters are used as in fig. 5 to denote the analogous parts of the two instruments. The end of the telescope is shown at A, and B is the rim of brass, which, by sliding upon A, fixes the micrometer to the telescope. The frame CC', moved by teeth on its outer edge, carries one of the halves G of the lens, and a similar frame with teeth car¬ ries the other half F. The scale S, six inches long, is fas¬ tened like an edge-bar to CC', and each inch is subdivided into 20 parts, which are read off with a vernier of 25 parts, which is fastened as an edge-bar to the moveable frame that carries F. The two moveable frames are im¬ bedded in a fixed plate HIT, screwed to the tube B of the- micrometer, and having a circular hole in its middle equal to the diameter of the object-glass. The two semi-lenses are separated by turning the milled head to the right of A, which moves the frame CC', and then the other frame F through the medium of a concealed wheel and a concealed pinion. The mechanism for giving the rotatory motion is also concealed. The adjustment of the vernier to zero is effected by the screw I. The property which the double-image micrometer pos¬ sesses, of measuring angles in all directions, directed to it the attention of Itamsden and other eminent opticians. Itamsden accordingly communicated to the Royal Society of London, in 1777,1 an account of two instruments of this kind, under the name of the Dioptric and Catoptric Micrometers. In order to avoid the effects of aberration, Itarnsden’s Ramsden proposed, in his dioptric micrometer, to place two dioptric semi-lenses in the conjugate focus of the innermost lens of j™crome" the erect eye-tube of a refracting telescope. In place or “ the imperfections of the lenses being magnified by the whole power of the telescope, they are magnified only about five or six times, and the size of the micrometer glass does not require to be Tooth Part °f the area which is necessary in Dollond’s instrument. This instrument is shown in Plate CCCLVII. fig. 7, where A is a convex or concave lens, bisected in the usual way. One of the semi¬ lenses is fixed in a frame B and the other in a similar frame E, both of which slide upon a plate H, against which they are pressed by thin plates a, a. The milled button D, by means of a pinion and rack, moves these frames in opposite directions ; and the separation of the semi-lenses thus ef¬ fected is measured by a scale of equal parts L on the frame B, the zero being in the middle, and the divisions read off by two verniers at M and N, carried by the frame E; the 1 See Phil. Trans, vol. Ixix. 177£), p> 419. 16 MICROMETER. Double- vernier M showing the relative motion of the two frames Image when the frame B moves to the right, and N when the Microme- frarae B is moved to the left. An endless screw F gives ters' v the whole micrometer a motion round the axis of vision. This instrument being only the divided object-glass mi¬ crometer in miniature, and differently placed, the reader will have no difficulty in understanding its construction and use, from the details already given in the preceding pages. Dr Pearson informs us, on theauthority of Mr Troughton, that a Captain Countess, R. N. having accidentally broken the third lens of a terrestrial eye-piece of his telescope, observed the double images which it produced; and that this observation led to the contrivance of the coming-up glass that was first made by Nairne, with a double screw for separating the halves of the amplifying lens. Hence it is conjectured that Ramsden derived his idea of using a bisected lens for his dioptric micrometer and dynameter. The above facts may be quite true, but Ramsden certainly did not require any such hint, as it was a very natural tran¬ sition from a bisected object-glass to a bisected eye-glass. Dr Pearson also states that Mr George Dollond had constructed a dioptric micrometer almost the same as Ramsden’s, without knowing any thing of what Ramsden had proposed. We have no doubt that both these ingeni¬ ous opticians were quite original in their ideas, for it will not be supposed that Captain Countess’s broken lens fur¬ nished Mr Dollond with the idea of his contrivance. Dr Pearson has given a drawing and description of Mr Dol- lond’s construction of the micrometer as made for Mr Davies Gilbert and himself.1 It does not appear that Mr Ramsden ever constructed it. The weight of this micro¬ meter was found by Dr Pearson too great for an ordinary achromatic telescope. liamsden’s Mr Ramsden likewise proposed a catoptric double-image catoptric micrometer,"which, from being founded on the principle of microme- reflection, is not disturbed by the heterogeneity of light, ter' while he considered it as “ avoiding every defect of other micrometers,” having “no aberration, nor any defect which arises from the imperfection of materials or of ^execution, as the extreme simplicity of its construction requires no additional mirrors or glasses to those required for the te¬ lescope.” “ It has also, peculiar to itself, the advantages of an adjustment to make the images coincide in a direc¬ tion perpendicular to that of their motion. In order to effect these objects, Mr Ramsden divided the small spe¬ culum of a Cassegrainian reflector into two equal halves, and by inclining each half on an axis at right angles to the plane that separated them, he obtained two distinct images; but as their angular separation was only half the inclina¬ tion of the specula, which would give only a small scale, he rejected this first idea, and separated the semi-specula by making them turn on their centre of curvature, any extent of scale being obtained by fixing the centre of mo¬ tion at a proportional distance from the common centre of curvature. The mechanism necessary to effect this is shown in Plate CCCLVII. fig. 8, where A is the bisected speculum, one of the semi-specula being fixed on the inner end of the arm B, its outer end being fixed on a steel axis X extending across the mouth of the tube C. The other semi-speculum is fixed on the inner end of the arm D, its outer end terminating in a socket«/, which turns upon the steel axis x. These arms are braced by the bars a, a. A compound screw G, having its upper part cut into double the number of threads in an inch, viz. 100, to the lower part g, which has only 50, works with the handle in a nut F in the side of the tube, while the part g turns in a nut H fixed to the arm B. The point of the compound screw separates the ends of the arms B and D, and, pressing against the stud h fixed to the arm D, turns in the nut H on the arm B. Double. A spiral spring within the part n presses the two arms B, lma8e D against the direction of the double screw e g, so as to 5 prevent all shake or play in the nut H. The progressive s motion of the screw through the nut will be half the dis¬ tance of the semi-specula, so that these specula will be moved equally in opposite directions from the axis of the telescope. A graduated circle V, divided into 100 parts on its cylin¬ drical surface, is fixed on the upper end of the screw G, so as to cause it to separate the semi-specula. The fixed index I shows the parts of a revolution performed by the screw, while the number of whole revolutions of the screw is shown by the divisions of the same index. A steel screw R, moveable by a key, inclines the small spe¬ culum at right angles to the direction of its motion. Dis¬ tinct vision is procured in the usual manner, and the tele¬ scope has a motion about its axis, in order to measure the diameter of a planet in any direction ; and the angle of ro¬ tation in reference to the horizon is shown by a level, gra¬ duated circle, and vernier, at the eye end of the large tube. A catoptric double-image micrometer has been suggest- Catoptric ed by Sir David Brewster as applicable to the Newtonian microme. telescope. The plane mirror is bisected, and is made toterfora. form two images, either by giving each semi-speculum motion round .their common line of junction, or round a line perpendicular to that common line. The mechanism by which this may be effected does not require any de¬ scription. If the micrometer is required for the sun or any luminous body, the small mirror may be made of pa¬ rallel glass, which would have the advantage of not ob¬ structing any of the light which enters the telescope, while it reflects enough for the purposes of distinct vision. We shall again have occasion to refer more particularly to this {; idea in the next section. tl Professor Amici of Modena has described, in the Me- Amici’s moirs of the Italian Society, a new micrometer, which gives double images by means of semi-lenses separated byter* mechanical means; but as we have not access to this work, we shall draw our description of the instrument from one given by Dr Pearson, which is very far from be¬ ing distinct, in so far at least as the construction of the semi-lenses, or bars of glass as they are called, are con¬ cerned. The semi-lenses seem to be portions of a large concave lens, separated in the usual manner, so as to give two distinct images of objects; but the peculiarity of the invention seems to consist in the lenses being placed be¬ tween the object-glass of a telescope and its principal fo¬ cus, the cone of rays being divided at a point about six inches before the place where the focal image is formed. Dr Pearson, who made experiments with one of these in¬ struments, has hinted at the inconveniences which he ex¬ perienced in using it. CHAP. IV. DESCRIPTION OF DOUBLE-IMAGE MICROME¬ TERS IN WHICH THE TWO IMAGES FORMED BY TWO SIMPLY REFRACTING LENSES, SEMI-LENSES, OR PRISMS, ARE SEPARATED OPTICALLY. In the year 1776 Dr Maskelyne constructed and used Maske- his prismatic micrometer, which he had contrived with lyne’s pris- the view of getting rid of the sources of error to which he mad0 nU' found the divided object-glass micrometer liable. Having cu>meter' cut a prism or wedge of glass into two parts, so as to form two prisms of exactly the same refracting angle, he con¬ ceived the idea of fixing them together, so as to produce two images, and to vary the angle which these two ima¬ ges formed, by making the prisms move between the ob- 1 Introduction to Practical Astronomy, vol. ii. p. 182. MICROMETER. 17 Double- Image Microme¬ ters. [New di¬ vided ob- Iject-glass microme¬ ter. ject-glass and its principal focus ; so that the scale is equal to the whole focal length of the telescope. The two prisms may be placed in three, ways, with their thin edges joined, with their square thick edges or backs joined, or 'with their sides or triangular edgds joined. In the first position the double images will have only one halt of the light which is incident on the object-lens when the prisms are close to it, and their degree of illumination will dimi¬ nish as they approach the focus. In the second position they will, as before, have only one half of the incident light when close to the object-glass, but the illumination will gradually increase as the prisms advance to the focus. In the third case, the prisms being in a reverse position, the light will be the same in every part of the scale, each of them receiving half the rays which fall upon the object- glass. On this account Dr Maskelyne preferred this last arrangement. In the instrument which Dr Maskelyne constructed, and which seemed to have had only a thirty-inch object- glass, the prisms were not achromatic, and consequently the touching limbs of a luminous body were affected with the prismatic colours. In the case of the sun, where all the rays might have been absorbed but the red, this was of little consequence; but in other cases it was a serious defect, which could be removed only by making the prisms achromatic ; or it might have been diminished by making the prisms of fluor spar, in which the dispersion is very small. One of the Dollonds, accordingly, executed for Dr Maskelyne an achromatic prism, which performed well. It does not appear that Dr Maskelyne made any observa¬ tions of value with this instrument. A new divided object-glass micrometer has been con¬ structed by Sir David Brewster, and described in his Trea¬ tise on New Philosophical Instruments. It consists of an achromatic object-glass LL, fig. 7, between which Fig. 7. Fig. 8. have an instrument which will measure with the greatest accuracy all angles between the two extreme ones. Ano¬ ther or more pair of semi-lenses may be used in the same telescope, and placed at smaller or greater distances, so that, by means of other scales adapted to them, we may obtain all angles that may be required. The lenses A, B may be concave or convex; and when a large scale is re¬ quired, with a tenth of an inch to a second, or even great¬ er, we have only to use semi-lenses of long foci, and the scale may be confined to the part of the tube nearest the focal point. Sir David Brewster has proved, both from theory and experiment, that the scale is one of equal parts; so that, after having ascertained by experiment the two extreme angles, the whole scales may be completed by dividing the interval into any number of equal parts, and these sub¬ divided, if necessary, by a vernier scale. When the semi-lenses are placed without the object- Fig. 9 Double- Image Microme¬ ters. and its principal focus/ two achromatic semi-lenses, fixed at a given distance, are made to move. These lenses are shown in fig. 8, and are fixed on a piece of tube, which screws into a tube ; by pulling out and pushing in which, they are made to recede from or ap¬ proach to the object-glass LL. By this motion the angle sub¬ tended by the two images va¬ ries in the same manner as the angle subtended by a pair of fixed wires was made to vary by the motion of a second ob¬ ject-glass. When the semi¬ lenses are close to LL, as shown at A, B, fig. 7, the two images which they form are much separated, and their cen¬ tres subtend a large angle ; but as the lenses approach to/ the centres of the images gradually approach each other, and consequently the angle which they subtend continually increases. Hence, if we determine by experiment the an¬ gular distance of their centres when the lenses are close to LL, and likewise the angle when they are at/ the other end of the scale, and if we fill up the intermediate points of the scale either from theory or direct experiment, we shall VOL. xv. glass LL, and this object-glass moved towards / as in the annexed figure, the angular distance of the images is in¬ variable. This instrument has been constructed for measuring distances, and as a coming-up glass for ascertaining whe¬ ther a ship is approaching to or receding from the ob¬ server. In this form it constitutes part of fig. 4, Plate CCCLVIL, the semi-lenses being made to screw into the same place as the second object-glass, and having a sepa¬ rate scale for themselves. In this form many of the in¬ struments have been constructed by Tulley. Among the optical micrometers, we may describe ano- Prismatic ther invented by Sir David Brewster, and adapted solely microme- to the Newtonian telescope. In order to get rid of the ^g^?rnian loss of light by the reflection of the small plane speculum, he uses an achromatic prism to reflect the light just as much out of the axis of the telescope as will allow the head of the observer to be applied to the eye-tube, without ob¬ structing any of the light which enters the tube. By using two prisms, as in Maskelyne’s instrument, and moving them along the axis of his telescope through a small distance, we shall obtain a good micrometer. The prisms may be separated mechanically, or a doubly refracting prism may be fixed upon the face of the single or achromatic prism used to turn aside the rays. The achromatism of a single glass prism may be corrected by the doubly refracting prism, a balance of refraction being left sufficient to turn aside the image to the observer’s eye. CHAP. V. DESCRIPTION OF DOUBLE-IMAGE MICROMETERS IN WHICH THE TWO IMAGES ARE FORMED BY DOUBLE REFRACTION. The happy idea of applying the two images formed by Rochon’s double refraction to the construction of a micrometer un-first micio- questionably belongs to the Abbe Rochon ; and though Dr meter. Pearson has laboured to show that Dr Maskelyne’s prisma¬ tic telescope was constructed before Rodion’s, yet this does not in the smallest degree take away from the originality and priority of Rochon’s invention ; for the idea of varying the angle by the motion of the prisms can scarcely be view¬ ed as an essential part of the invention. 18 MICROMETER. Double- Although the double refraction of rock-crystal is small, Image yet? from jts limpidity and hardness, the Abbe Rochon re- ters™0* garded ^ as suI)er‘or t0 any other substance for making ^ r . doubly refracting prisms. When he used one prism so Rochon’s cut that its refracting edge coincided with the axis of the first micro-prism, in which case its double refraction was the greatest, meter. he found that the separation of the two images was too small to give the angles which he required.1 He therefore fell upon a most ingenious plan of doubling the amount of the double refraction of one prism, by using two prisms of rock-crystal, so cut out of the solid as to give each the same quantity of double refraction, and yet to double that quantity in the effect produced. This construction of the compound prism was so difficult, that M. liochon informs us, that “ he knew only one person, M. Narci, who was capable of giving rock-crystal the prismatic form in the proper direction for obtaining the double refractions neces¬ sary to the goodness of the micrometer.” The method used by Narci seems to have been kept a secret, for in 1819 Dr Wollaston set himself to discover the method of constructing these compound prisms, and has described it in the Philosophical Transactions,2 but not in such a man¬ ner as to be very intelligible to those who are not familiar with such subjects. We conceive that the process may be easily understood from the following rule. Cut a hexago¬ nal prism of quartz into two halves by a plane passing through or parallel to its axis. Grind and polish the two cut faces, and by means of Canada balsam cement the one upon the other, so that any line or edge in the one face may be perpendicular to the same line in the other. Cut and polish a face on each of the united portions, so that the common section of these faces with the cemented planes may be parallel to the axis of the crystal, while they are equally inclined to these planes, and the prism will be completed. Method of We shall now’explain, by a diagram, a more simple and cutting the economica] way 0f cutting these prisms, though the prin¬ ciple is exactly the same. Let AKGDBLHF be half of a hexagonal prism of quartz, the height of which, DF, is equal to half of its diameter AD. Bisect AD in C, and join CK, CG, and draw CE parallel to AB or DF. This line CE will be the axis of the prism. Grind and polish the section ABFD, and cut off the prisms AKCBLE and DGCFHE, setting aside the intermediate similar prism KGCLHF. The faces ACEB, DCEF are square and equal, so that if we cement these faces together, making the line AB coincide with FE, AC will coincide with FD, CE with CF, and EB with CF. If we wish each prism to have an angle of 60°, we may take either GDFH or GCEH for the refracting face of it; we shall suppose the former. In this case we must grind and polish a face on the other prism ABL, which is accurately parallel to the face GDFH, and the compound prism will be completed. If 60° is too great, we must grind down the face GDFH till it has the desired inclination to DF, and grind and polish a face parallel to it on the other prism. The external faces, in short, to be made upon each prism, must be equally inclined to the ce¬ mented planes DCEF, ABEC, and have their common section DF pa¬ rallel to the axis CE of the prism. prisms from the crystal. ters. In place of cutting off the prism AKCBLE, we may cut off Double only the prism GCDHEF, leaving the intermediate one 1 Image KGCLHE attached to AKCBLE, and proceed as before. Microme The object of this is to leave enough of solid quartz at KL to give a face of the same breadth as GDFH. If the prisms required are small compared with the quartz crys¬ tal, we may obtain, by the first method, six prisms out of the crystal, or three pair of compound ones. On the other hand, if the required prism is large compared with the crystal of quartz, it may require one half of the crystal to make one prism, and the other half the other. Nay, it may be necessary to cut each individual prism out of separate crystals, the method of doing which is very obvious from the preceding description. When the prism is completed, it is obvious that a ray of light incident perpendicularly on the face GHFD will be perpendicular to the axis of the prism CE, and therefore the extraordinary ray will suffer the greatest deviation, viz. 17'; and the same is true of the other prism. But when the ray passes through both, it is found to have a devia- Fig. 11. tion of 34', which is produ¬ ced in the following manner: ' Let AB be a line viewed ° through one of the prisms, with its refracting angle turned upwards ; two images of it will be seen, viz. the A____ _B extraordinary image at E, and the ordinary one at O. If we now interpose the other prism with its refracting angle downwards, both these images E, O will be refract¬ ed downwards. But, owing to the transverse cutting of the prisms, the extraordinary image E, which was most raised, now suffers ordinary refraction, and is least depress¬ ed, so that in place of being refracted back to AB, it comes only to E'Q'. On the other hand, the ordinary image O, which suffered the least refraction, is now extraordinarily refracted, and, in place of reaching AB, is depressed to O'E'; and since the double refraction of each prism, as well as the angles of the prism, are equal, the angular distance of the images E'O', O'E' foi'med by the combined prisms will be double of the distance EO, or 34'. The same rule maybe followed in cutting the prism out of the limpid and homogeneous topazes of New Flolland, the principal axis of which coincides with the axis of the prism. When the crystals are amorphous, the cleavage planes will be a sufficient guide, as the above axis is al¬ ways perpendicular to them. Such prisms are incompar¬ ably superior, as we have practically experienced, to those made of rock-crystal. When a very large angle is required for any particular purposes, artificial crystals, such as carbonate of potash, &c. may be advantageously employed, the crystals being ground with oil, or any fluid in which they are not soluble. By cementing plates of parallel glass on their outer sur¬ faces, they will be as permanent as rock-crystal. Dr Pearson fitted up with one of Rochon’s micrometers an achromatic telescope 33 inches in focal length, and having a magnifying powrer of 35^. He applied to it two separate compound prisms, one of which had a constant angle of 32', and the other an angle only of 5', the ver¬ nier in the former case indicating seconds, and in the lat¬ ter tenths of seconds. A drawing is given of the tube, with the prisms and scales, in Plate CCCLVII. fig. 9 and 10, as given by Dr Pearson. The tube is graduated from the 1 In his first experiments Rochon corrected the dispersion of the rock-crystal prism by a similar prism placed in front of it, and having its exterior face perpendicular to the axis of the crystal. This prism, having no effect in doubling the image, gave him a complete correction of the dispersion for the ordinary image. a Phil. Trans. 1820, p. 120. MICROMETER. 19 Double- solar focus into two scales, one being placed on each side Image of the slit or opening cut along the middle of the tubes, ■ Microme- t0 all0w the sliding piece, shown separately in tig. 10,. to ters- move from the object-glass to the solar focus. This sliding piece holds the prism, the larger prism of 32' being shown as placed with its sliding piece in the tube, and the smaller prism of 5' being shown in the separate sliding piece, tig. 9. The two verniers of the scales are seen on each side of the two screws with milled heads, which pass through the slit, and serve to move the sliding piece to or from the object-glass when they are not too much tightened. In his original memoir on the subject, published in the JournaldePhysique \'ox 1801,1 M.Rochon makes the follow¬ ing observations. “ I ought not to omit, that in this new construction there are difficulties of execution not easy to surmount, which may have been one reason why these instruments, so useful to navigators, and in certain very nice astronomical observations, have not been adopted. This induced me at length to adopt Euler’s method. In the construction of achromatic object-glasses I found I could increase or diminish the absolute effect of the double re¬ fraction within certain limits, by means of the interval be¬ tween the glasses of different refracting powers; the se¬ paration of the images at the focus being so much the greater, as the interval is larger, when the flint-glass is the first of the object-glasses, and less when it is the se¬ cond. Conformably to these new principles, I have had two telescopes with a doubly refracting medium construct¬ ed under my own inspection, which General Gantheaume will employ for determining the position of his ships, and to find whether he be approaching any he may meet with at sea.”2 Rodion’s In 1812 M. Rochon constructed his doubly refracting second mi-micrometer in another form, from which he anticipated crometer. great advantages. He made a parallelepiped of rock- crystal, consisting of two prisms whose refracting angles were each about 30°, so that the angle which they gave was less than 30', and the two images of the sun of course - overlapped each other. The prisms being firmly united by mastic, he ground the parallelepiped into a convex lens, so that when combined with a concave one of flint- glass, it formed an achromatic object-glass with a focal length of about 3 decimetres, or nearly 12 inches. This object-glass separated the centres of the images of the sun about 28 minutes. “ He then adapted to this object- glass a common micrometer, which measured angles of 10 minutes, and he had thus 3 decimetres and 10 minutes to complete the measure of the diameters of the sun or moon.”3 M.Arago’s M. Arago appears to have been the first person to ap- microme- p]y doubly refracting prisms to the eye-pieces of tele- Cer' scopes for the purpose of measuring very small angles. He explained his general method to the writer of this ar¬ ticle in July 1814<, and mentioned the results which he had obtained with it in measuring the diameters of the planets. We do not recollect distinctly how he varied the constant angle of the doubly refracting prism ; but Dr Pearson and ,M. Biot state,4 that the constant angle was increas¬ ed by placing the prism in an oblique direction as re¬ gards the line of vision; and “ that he determined the re¬ spective values of the angles thus increased by means of concentric circles placed vertically at a measured distance from the eye wheti looking through the prism; for as he knew the diameters of each circle, he could generally find one out of the number which would come into exact con- Double¬ tact with its image, and thus give the value of the con- Image slant angle.”5 Dr Pearson has proposed an ocular crystal micrometer, v Y - y and has given a drawing and description of the instru¬ ment.6 It is nothing more than M. Arago’s ocular crystal prism, in which the constant angle is varied by Sir David Brewster’s variable eye-piece already described. On the same principle, the angle of the prism may be varied by a convex or concave lens moving between the object-glass and its principal focus ; but what would be still better, by pulling out or pushing in the eye-piece of a Gregorian or Cassegrainian telescope. In 1821 Mr George Dollond communicated to theMrG.Dol- Royal Society an account of his spherical crystal micro- meter, a very ingenious instrument, though, we should think, one difficult to execute ; and, at the same time, even meter> when well executed, liable to error. Mr Dollond’s improve¬ ment consists in making a sphere or lens from a piece of rock- crystal, and adapting it to a telescope in place of the usual eye-glass, as shown in Plate CCCLVII. fig. 11, where a is the sphere or lens, formed of rock-crystal, and placed in half holes, from which is extended the axis bb, with an at¬ tached index, the face of which is shown in fig. 12. This index registers the motion of the sphere on the graduated circle. The sphere a is so placed in the half holes, that when its natural axis (axis of double refraction, we pre¬ sume) is parallel to the axis of the telescope, it gives only one image of the object. In a direction perpendicular to that axis, it must be so placed that when it is moved the separation of the images may be parallel to that motion. The method of acquiring this adjustment is by turning the sphere a in the half holes parallel to its own axis. A second lens d is introduced between the sphere and the primary image given by the object-glass, and its distance from the sphere should be in proportion to the magnifying power required. The magnifying powers engraven in fig. 12 are suited to an object-glass of 44 inches focal length. The following are the advantages of this construction, as stated by its inventor. 1. It is only necessary to select a piece of perfect crystal, and, without any knowledge of the angle that will give the greatest double refraction, to form the sphere of a proper diameter for the focal length required. 2. The angle may be taken on each side of zero, withoxit reversing the eye-tube ; and intermediate angles may be taken between zero and the greatest sepa¬ ration of the images, without exchanging any part of the eye-tube, it being only required to move the axis in which the sphere is placed. 3. It possesses the property of a common eye-tube and lens; for when the axis of the crystal is parallel to that of the objgct-glass, only one image will be formed, and that as distinctly as with any lens that does not refract doubly.7 Dr Pearson had one of these instruments constructed by Mr Dollond, and applied to an achromatic object-glass 43-6 inches in focal length. He has shown that the scale is not one of equal parts, and has pointed out a method of determining the constant angle of the crystal. Knowing from experience the imperfect structure of rock-crystal, especially in directions approaching to the axis, we dreaded that a spherical eye-glass ot this material would not give perfect vision. Dr Pearson confirms this opinion by actual observation. He attempted to measure the diameter of Mars when about 9", “ but its limits were 1 Translated in Nicholson’s Journal, 8vo, vol. iv. p. 110-120. 2 Hid. p. 117* 3 This description is not very intelligible, but we cannot at present refer to the original memoir. 4 Introduction to Practical Astronomy, vol. ii. p. 20G-212. 5 We regret that M. Arago has, in so far as we know, not published an account of his methods. What Dr Pearson says is not very intelligible. We presume his meaning to be, that M. Arago made his scale for measuring the varying angle of the images by direct experiment. u Introd. Pract. Astron. vol. ii. p. 219. 7 See Phil. Trans. 1821, p. 101-104. MICROMETER. so imperfectly defined that no satisfactory observation could be made.”1 We would therefore strongly recom¬ mend to Mr Dollond the substitution of limpid topaz from New Holland, in place of the rock-crystal. Position microme¬ ters. Sir W. Herschel’ position microme¬ ter. CHAP. VI. DESCRIPTION OF POSITION MICROMETERS. A position micrometer is an instrument for measuring angles when a plane passing through the two lines which contain these angles is perpendicular to the axis of vision. Sir W. Herschel first proposed such an instrument for the purpose of verifying a conjecture, that the smaller of the two stars which compose a double star revolves round the larger one. Hence it became necessary to observe if a line joining the centres of any two stars always formed the same angle with the direction of its daily motion. After constructing the instrument which we are about to de¬ scribe, and making a long series of observations, he veri¬ fied his conjecture by the important discovery, that the double stars formed binary systems, in which the one re¬ volved round the other.2 The position micrometer used by Sir William Herschel in his earliest observations, viz. 5 those made in 1779-1783, was made by Nairne, and was constructed as shown in Plate CCCLVII. fig. 13, which represents it when enclosed in. a turned case of wood, and ready to be screwed into the eye-piece of the tele¬ scope. “ A is a little box which holds the eye-glass. B is the piece which covers the inside work, and the box A screwed into it. C is the body of the micrometer, con¬ taining the brass work, showing the index-plate a project¬ ing at one side, where the case is cut away to receive it. D is a piece having a screw b at the bottom, by means of which the micrometer is fastened to the telescope. To the piece C is given a circular motion, in the manner the hori¬ zontal motion is generally given to Gregorian reflectors, by the lower part going through the piece D, where it is held by the screw E, which keeps the two pieces C and D together, but leaves them at liberty to turn on each other. Fig. 14 is a section of the case containing the brass work, where may be observed the piece B hollowed out to re¬ ceive the box A, which consists of two parts enclosing the eye-lens. This figure shows how the piece C passes through D, and is held by the ring E. The brass work, consisting of a hollow cylinder, a wheel and pinion, and index-plate, is there represented in its place. F is the body of the brass tvork, being a hollotv cylinder with a broad rim C at its upper end ; this rim is partly turned away to make a bed for the wheel dL The pinion e turns the wheel d, and car¬ ries the index-plate a. One of its pivots moves in the arm f screwed on>the upper part of c, which arm serves also to confine the wheel d to its place on c. The other pivot is held by the arm g fastened to F. A section of the brass work is shown in fig. 15, where the wheel d, which is in the form of a ring, is laid on the upper part of F or C, and held by two small arms_/i h, screw¬ ed down to e with the screws i, i. A plan of the brass work is shown in fig. 16, where d d is the wheel placed on the bed or socket of the rim of the cylinder cc, and is held down by the two pieces f, h, which are screwed on cc. The piece f projects over the centre of the index-plate to receive the upper pivot of the pinion mn, the fixed wire being fastened to cc, and the moveable wire op, fastened to the annular wheel dd. The index-plate a, milled on the edge, is divided into sixty parts, each subdivided into two. When the finger is drawn over the milled edge of the index-plate from q to r, the angle viso will open, and if drawn from r towards q, Position it will shut again. The case cc must have a sharp corner Microme- t, which serves as an index to point out the divisions on ^ ^ers‘ the index-plate.3 We do not know the value of the divisions in the instru¬ ment used by Sir William Herschel ; but in the position micrometer of the five-feet equatorial used by Sir John Herschel and Sir James South, in their observations on double stars, the position circle was large enough to show distinctly minutes of a degree by means of its vernier. The position micrometer which we have now described has been greatly improved by Sir David Brewster; and the following account of these improvements, which is not susceptible of abridgment, is given in his own words. In the position micrometer invented by Sir William Improved Herschel, “ the two wires always cross each other at position the centre of the field, and consequently their angular microme. separation is produced uniformly by the motion ot the er‘ pinion. This very circumstance, however, though it ren¬ ders it easy for the observer to read off the angle from the scale, is one of the greatest imperfections of the instru¬ ment. The observations must obviously be all made on one side of the centre of the field, as appears from fig. 16 ; and the use of the instrument is limited to those cases in which Ss is less than the radius SC. The greatest disad¬ vantage of the instrument, however, is the shortness ot the radius SC ; for the error of observation must always diminish as the length of this radiifs increases. This dis¬ advantage does not exist in measuring the angle of posi¬ tion of two stars S, s, for the distance Ss remains the same whatever be the length of SC ; but in determining the angle tvhich a line joining two stars forms with a line join¬ ing other two stars, or those which compose a double star (an observation which it may often be of great importance to make), and all other angles contained by lines whose apparent length is greater than SC, this impertection is inseparable from the instrument. Nay, there are some cases in which the instrument completely fails; as, for in¬ stance, when we wish to measure the angles formed by two lines which do not meet in a focus, but only tend to a re¬ mote vertex. If the distance of the nearest extremities of these lines is greater than the chord ot the angle which they form measured upon the radius SC, then it is impos¬ sible to measure that angle, for the wires cannot be brought to coincide with the lines by which it is contained. Nay, when the chord of the angle does exceed the distance between the nearest extremities, the position of the wires which can be brought into coincidence with the lines is so small as to lead to very serious errors in the result. The new position micrometer which we propose to sub¬ stitute for this instrument is free from the defects just noticed, and is founded on a beautiful property of the circle. If any two chords, AB, CD, fig. 12, intersect each other in the point O within the circle, the angle which they form at O will be equal to half the sum of the arches AC, BD ; but if these chords do not intersect each other within the circle, but tend to any point O without the circle, when they would intersect each other if continued, as in fig. 13, then the angle which they form is equal to half the differ¬ ence of the arches AC, BD ; that is, calling

B be the inner edge of the mother-of-pearl ring, and mn the object to be measured. Bisect the arch mn in p, and draw Cm, Cj», Cn, and we shall have AB : mn mpn . ■ “fj—> and mpn — sin. Fig. 19. — rad. \mpn rad. XAB, a formula by which CHAP. IX.—DESCRIPTION OF MICROMETERS FOR MICRO¬ SCOPES. may be used, its diameter being 9^th of an inch. We Diameter in Parts of an Inch. Lycoperdon bovista, seed of. 8500th of an inch. ditto. ditto. ditto. ditto. ditto. ditto. ditto. ditto. the angle subtended by the chord of any number of degrees may be readily found. The first part of the formula is constant, while AB varies with the magnifying power employed. Vlicrome- All the micrometers above described may be adapted to roscopeT1"00111^01111^ rn’croscopes, where the eye-glass has a consi¬ derable focal length. A good micrometer, however, for sin- 1 Physico-Mathematical Dissertations, p. 45. 2 We consider this the best measure. 3 The late Mr Pond has observed, that the pale, slender, double-headed scales of the Ponlia or Pieris Irassica, which taper to a point, and terminate in a brush-like appendage, are of an invariable length, about 5gth of an inch. VOL. XV. D Micro¬ scopes. gle microscopes, which can be used with facility, and at Microme the same time give accurate results, is still a desideratum. ters for When the single lens is so minute, or when the first lens of a microscopic doublet or triplet almost touches the sur¬ face of the object, it is an extremely difficult matter to in¬ troduce any scale, or any minute body of known dimen¬ sions, with which the object may be compared. In some cases, when the object to be measured is minute, the seed of the lycoperdon bovista or pvff-ball might be introduced, its diameter being about the Part of an incl1 '■> an(1 when the object is less minute, the seed of lycopodium may advantageously adopt, in some cases, the method of Dr J urin,1 who introduced into the field small pieces of silver or brass wire, whose diameter he had previously ascertained by coiling the wire round a cylinder, and ob¬ serving how many breadths of the wire were contained in a given number of inches. This method of introducing a substance of known di¬ mensions may be carried much farther. We may use all the variety of hairs and wool which have a known diameter ; and for this purpose Dr Young's .tables of substances mea¬ sured by the eriometer will be of great use. The follow¬ ing are a few of them : Smut of barley 4600th Silk, fibre of (average) 2500th Human blood, particles of (Bauer) 2500th2 Mole’s fur 1875th Goat’s wool 1575th Saxon wool 1320th Farina of Laurestinus 1100th Seed of lycopodium 940th The distance of the fibres of the crystalline lens of fishes may also be advantageously used, and also the distance of the teeth which unite the fibres. For this purpose, the lens must be well dried, and perfectly hard, so that with a sharp knife we can detach minute portions of any of the laminae. The thinnest should be used ; and as the fibres always taper to the pole, and the teeth become smaller in proportion as the fibres diminish, we must determine the distance of the fibres, and also those of the teeth, at both ends of the lamina;, by the method described by Sir David Brewster in the Philosophical Transactions for 1833, p. 324. The larger lined scales of moths and butterflies may also be used, especially as we can measure the distance of the lines by the coloured spectra which these lines pro¬ duce.3 These operations will require much dexterity on the part of the observer, and they are recommended only to those who cannot succeed in their measurements by other methods. An excellent method of measuring microscopic objects is to project the image of the object against a divided scale, at a given distance from the eye. The scale must be seen either by the same eye which is looking into the microscope, or by the other eye. In the first case, the rays from the microscope will enter one side of the pupil, and the rays from the divided scale the other side; the aper¬ ture through which we look at the scale, and the aperture of the microscope, being at a distance less than the diameter of the pupil. When the right eye looks at the divided scale, the left, which looks into the microscope, will see the object projected against the scale, although it has no vision "of the scale itself. This second method may be carried into effect in two ways. The scale may form no part ' J 26 MICROMETER. Dr Wol laston’s Microme- of the instrument, and may be viewed by the naked eye; tTM-S f°r or ^ ma^ ^orm Part t^ie ^nsfrument» like a binocular scones" t0!6800?6’ ^l16 l0^ ey0 looking into one tube, viz. the mi¬ croscope, while the right eye looks into another tube, in which a divided scale is magnified by an eye-lens. Dr Wollaston has constructed and used a very ingenious micrometer on the first of the principles above mention- lens-micro-ed, viz. when the object and the scale are viewed by the metei. same eye ; but its use is limited to microscopes with small lenses. When the lenses are larger, we have adopt¬ ed another method, namely, to perforate the lens with a small hole in or near the centre, or, if it is thought better, near the margin of the lens. A slit extending from the margin of the lens may often be executed more easily. The following is Dr Wollaston’S own description of this instrument: “ This instrument,” says Dr Wollaston, “ is furnished with a single lens of about ^th of an inch focal length. The aperture of each lens is necessarily small, so that when it is mounted on a plate of brass, a small perforation can be made by the side of it in the brass, as near to its centre as ^jth of an inch. “ When a lens thus mounted is placed before the eye for the purpose of examining any small object, the pupil is of sufficient magnitude for seeing distant objects at the same time through the adjacent perforation, so that the apparent dimensions of the magnified image might be com¬ pared with a scale of inches, feet, and yards, according to the distance at which it might be convenient to place it. “ A scale of smaller dimensions, attached to the instru¬ ment, will, however, be found preferable, on account of the steadiness with which the comparison may be made ; and it may be seen with sufficient distinctness by the naked eye, without any effort of nice adaptation, by reason of the smallness of the hole through which it is viewed. “ i he construction that I have chosen for the scale is represented in Plate CCCLVIII. fig. S3. It is composed of small wires about j^th of an inch in diameter, placed side by side so as to form a scale of equal parts, which may be with ease counted by means of a certain regular variation of the lengths of the wires. “ -lhe external appearance of the whole instrument is that of a common telescope consisting of three tubes. The scale occupies the place of the object-glass, and the little lens is situated at the smaller end, with a pair of plain glasses sliding before it, between which the subject of ex¬ amination is to be included. This part of the apparatus is shown separately in fig. 35. It has a projection, with a perforation, through which a pin is inserted to connect it with a screw, represented at b, fig. 34. This screw gives lateial motion to the object, so as to make it correspond with any particular part of the scale. The lens has also a small motion of adjustment, by means of the cape, fig. 36, which renders the view of the magnified object distinct. “ Before the instrument is completed, it is necessary to determine with precision the indications of the scale, which must be different, according to the distance to which the tube is drawn out. In my instrument, one di¬ vision of the scale corresponds to y^^th of an inch when it is at the distance of IG'S inches from the lens; and since the apparent magnitude in small angles varies in the simple inverse ratio of this distance, each division of the same scale will correspond to at the distance ot o] 0 inches; and the intermediate fractions 7^77, -^-t1 «xc. are found by intervals of 1-66 inch, marked on the outside of the tube. The basis on which these indications were founded in this instrument was a wire, carefully as- Micronic certained to be J-^th of an inch in diameter, the magnified ters for image of which occupied fifty divisions of the scale when Micro- it was at the distance of 16‘6 inches ; and hence one divi- sc°pes. 1 50 x 21)0 ——Since any error in the 10000 J original estimate of this wire must pervade all subsequent measures derived from it, the substance employed was pure gold drawn till fifty-two inches in length weighed exactly five grains. If we assume the specific gravity of gold to be 19-36, a cylindrical inch will weigh 3837 grains ; and we may hence infer the diameter of such a wire to be gyyth of an inch, more nearly than can be ascertained by any other method. “ For the sake of rendering the scale more accurate, a similar method was, in fact, pursued with several gold wires of different sizes, weighed with equal'care; and the subdivisions of the exterior scale were made to correspond with the average of their indications. “ In making use of this micrometer for taking the mea¬ sure of any object, it would be sufficient, at any one acci¬ dental position of the tube, to note the number on the outside as denominator, and to observe the number of di¬ visions and decimal parts which the subject of examina¬ tion occupies on the interior scale as numerator of a frac¬ tion, expressing its dimensions in proportional parts of an inch ; but it is preferable to obtain an integer as numera¬ tor, by sliding the tube inward or outward, till the image of the wire is seen to correspond w ith some exact number of divisions, not only for the sake of greater simplicity in the arithmetical computations, but because we can by the eyo judge more correctly of actual coincidence than of the comparative magnitudes of adjacent intervals. The small¬ est quantity which the graduations of this instrument pro¬ fess to measure, is less than the eye can really appreciate- in sliding the tube inw'ard or outward. If, for instance, the object measured be really it may appear Tq^q(J, or Woo’ which case the doubt amounts to y^th part of the whole quantity. But the difference is here exceed- ingly small in comparison to the extreme division of other instruments, where the nominal effect of its power is. the same. “ A micrometer with a divided eye-glass may profess to measure as far as yoWq of an inch ; but the next division 1S. rgooo. or Wod ’ au^ though the eye may be able 'to distinguish that the truth lies between the two, it receives no assistance within one-half part of the larger measure.”1 I he micrometer microscopes used for reading off the divisions on the graduated limb of astronomical instru¬ ments differ in no respect from the eye-pieces of tele¬ scopes fitted up with micrometers. Notwithstanding the value of the methods described above, the want of a simple micrometer for microscopes of high power is felt by every person who has been prac¬ tically occupied with this class of researches; and we cannot give a better proof of this than by adducing in support of our opinion the different measures that have been given by able and ingenious observers of the size of the particles of the human blood. Dr I homas Young l-6060th part of an inch. ™ VraSt0n 1—5000th ditto. MM. Prevost and Dumas l-4076th ditto. Captam Kater l-4000th ditto. M. Fhrenberg2 l-3600th dittn Messrs Hodgkin and Lister.*;.... l-300o[h ditto 1 Phil. Trans. 1813, p. 119. 2 In measuring the size of the fossil infusorias recently discovered by himself M 1* „5th of a line m diameter, or of an inch, bnt of what Lh is not minted iXTU ftate whfthe™ met M I C M I C 27 Micro- Sir David Brewster l-2556th part of an inch. scope. Dr Jurin1 1-1940th ditto. Bauer’s best observation l-*2500th ditto. next best l-2000th ditto. worst observation.... l-1000th ditto. The three measures of 1000, 2000, and 2500, have been recently given by Mr Bauer himself, as the different steps which he made towards what he conceives the best measure, viz. l-2500th, which he obtained repeatedly with an improved achromatic microscope. As Dr Young obtained his measure eriometrically, namely, by measuring the diameter of the first red ring produced by looking through the blood at a luminous object, we cannot con¬ ceive it possible that he could have committed such a mis¬ take as to make the diameter of that ring nearly thrice as great as it should be, according to Mr Bauer’s results, or more than thrice as great as the concurring measures ob¬ tained by Jurin and Leewenhoeck. The only explanation we can give is, that the particles of the blood must have an organized structure, or consist of portions separated by lines which have the magnitude assigned by Dr Young. In order to submit this explanation to the test of experi¬ ment, Sir David Brewster examined the particles of blood a few minutes after it was drawn, when dried by natural evaporation on a plate of glass. Each particle he found Micro- to consist of a dark rim, within which is a bright circle, scope, then a darkish central spot, which spot in some globules may be resolved into a dark ring, a bright ring within this, and then a small central black spot. Here, then, is the cause of Dr Young’s mistake. The red ring of light which he measured in the eriometer was not that which was due to the globule as a whole, but to the parts of the globule. Being anxious to obtain more complete evidence of this fact, we placed lycopodium powder beside the globule of blood, and found that the diameter of the globules was to that of the lycopodium seed as 5 to 18. We then com¬ pared the diameter of the red ring produced by the seed with the diameter of the red ring produced by division on steel, in which there were 1250 to the inch, as executed for us by the late Sir John Barton, and found the di¬ ameter of the seed to be the 697th of an inch. We com¬ pared it also with the ring produced by divisions of which there were 625 to the inch, and found its diameter the 717th part of an inch. The mean of these two is the 710th2 part of an inch, which, increased in the ratio of 5 to 18, gives the 2556th part of an inch as the measure of the diameter of the globules of blood, agreeing almost exactly with the recent measure of Mr Bauer. MICROSCOPE. Microscope, from /i/xgog, a small object, and oxoirw, to see or examine, is the name of a well-known optical in¬ strument for examining and magnifying minute objects, or the minute parts of large ones. Dr Goring has, in his various ingenious works on the microscope, used the word engiscope, from syyus, near, and oxottew, to see ; but the old and venerable term is so associated with the history of opti¬ cal discovery, and is so expressive of the application of the instrument, that we cannot consent to the proposed change. As the early history of the microscope must form a part of the general history of Optics, we must refer our read¬ ers to that article for an account of its invention and pro¬ gressive improvements, as well as for an account of the optical principles on which it depends. There is probably no branch of practical science which -has undergone such essential and rapid improvements as that which relates to the microscope. It has become quite a new instrument in modern times, and it promises to be the means of disclosing the structure and laws of mat¬ ter, and of making as important discoveries in the infi¬ nitely minute world, as the telescope has done in that which is infinitely distant. CHAP. I. ON SINGLE MICROSCOPES. On single A single microscope is one in which only one convex micro- Jens is used for magnifying objects. The object to be scopes. examined is placed before the lens, in its focus; and the rays which emerge from the lens after refraction are pa¬ rallel, and therefore give distinct vision of the object to the eye placed behind it. The simplest form of the single microscope is when the lens is fitted into a rim of brass furnished with a handle, and the object being held in the left hand and the lens in the right, it may be examined with great correctness. If the convex lens is very mi¬ nute, and has a short focal length, such as from the 10th to the 100 th of an inch, it cannot be conveniently used in the hand, and must therefore be placed in a firm mi¬ croscope stand, having a shelf for holding the object, a screw or a rack and pinion for placing the object in the fo¬ cus of the lens, and a lens or mirror, or both, for throwing light upon the object. In this form, however complex be its structure, it is still called a single microscope. A single microscope, in order to have all the perfection Materials which art can give, must consist of a substance perfectly f°f single homogeneous, like a fluid without double refraction, or anymicro" variation of density. Its^^wre ought to be that of a piano-scol,t's- convex lens, whose convex surface is part of a hyperbo¬ loid, in order to correct completely the spherical aberration. Its surface should be perfectly smooth and highly polish¬ ed, so as not to disturb the perfection of vision; and the substance of which it is made should have the lowest dis¬ persive power. As it is a great object to obtain high mag¬ nifying powers with as little convexity as possible, and a large aperture, substances with high refractive and low dispersive ones are the most suitable for single lenses, such as diamond, garnet, or which have no double refrac¬ tion when well crystallized ; or such as ruby, sapphire, to¬ paz, &c. which have double refraction. As jluor spar has the lowest dispersive power, it might be used with great advantage when high powers are not wanted, and when the diminution of colour is an object. Of all the substances we have named, fluids have pro¬ perties best suited for single microscopes. They possess perfect homogeneity, their surfaces when made into lenses are perfectly smooth, and it is possible to mould minute drops of them into a form approaching to that of the hy¬ perboloid. Their defect, however, consists in their not having a high refractive power, in their want of durability, and the difficulty of forming sufficiently minute lenses for producing high magnifying powers. These defects, how¬ ever, especially the last, may be overcome by patience and experience; and in proof of this we may state, that we sure is taken by himself or not. He reckons the thickness of a human hair at 3gth of a line at its mean thickness, or S57th of an inch. 1 This result was confirmed by Leewenhoeck, who used the same wire, which was sent to him by Dr Jurin. PhiL Trans. No. 377- 1 Dr Young makes this the 940th of an inch, but he has certainly committed a mistake in his observation. 28 MICROSCOPE. Single Mi-have succeeded in forming fluid lenses that were fully croscopes. equal to the best sapphire lenses that have been executed. ^ In the present state of this branch of science, it would be unprofitable to detail the methods of producing micro¬ scopic globules of glass, given by Dr Hooke, Father di Torre of Naples, Mr Butterfield, or Mr Sivright; be¬ cause when they are made after their methods, and in the most perfect manner which the methods will permit, they are of no value compared with lenses of glass when ground and polished to the same focal length.1 We shall therefore proceed to describe a single micro¬ scope when fitted up in the best form for observation. Description of a Single Microscope. Single mi- The most essential part of this instrument is the lens or croscope. lenses, upon which the value of the microscope depends. The lenses are generally made of plate-glass, and should have focal distances varying from the l-10th to the l-50th of an inch. In order that the spherical aberration of these lenses may be the smallest possible, the radii of their two surfaces should be as 1 to 6; the surface whose radius is as 1, or the most convex side, must be turned towards the eye. The lenses, thus made, are then set in the centre of the lower surface of concave brass caps, a section of one of which is shown in Plate CCCLIX. fig. 1. The best mode of fitting up the microscope is that con¬ trived by Mr Pritchard, which is represented in fig. 2, on a scale about one third of its real size. It is shown in an inclined position; but it may be used either in a vertical or a horizontal one, according to the convenience of the observer. The body of the instrument rests on a pillar b, supported by three legs, shown at «, and is connected with it by the clip /, being fixed by the pinching screw f Within the tube c there slides a tube A, connected by a screw which passes through it to the triangular tube or bar i, carrying the arm ij, into which is placed the brass cap j which carries the lens. This lens is adjusted to the distinct vision of objects placed on the stage l by sliding the tube h up or down, and a perfect adjustment is ob¬ tained by turning the milled head k. The stage l, which carries the objects, is fitted into the triangular box r at the extremity of the stem, by means of two pins, and can be removed at pleasure. The spring slider-holder, for holding the sliders in which the objects are placed, is fixed by a bayonet-joint into the stage; and it may be used to hold stops or diaphragms for limiting the field of view. The tube above / represents an illuminator fixed to the slider-holder. Upon the tube c, two sockets d, e slide with sufficient spring and friction to keep them in their place. The socket d carries the reflector d, and the socket e carries the condensing lens, which is not inserted in the figure. A section of the stem rch is shown in fig. 3, in order to exhibit the mechanism by which the adjustment is ef¬ fected. Into the box r, screwed into the top of the stem, is fitted the triangular tube ii', which carries the arm ij. Ixi the lower end i! of this triangular tube is a small block with a fine screw working in it, the stem of which turns along with the milled head k, to which it is fixed. The upper end of a spiral spring, shown in the figure, bears against the block i' at the bottom of the triangular tube, while its lower end acts against a stop fixed within the Single Mi sliding tube h. The method of managing, illuminating, croscopes. and examining opaque objects with this microscope is “ the same as that used in the achromatic compound mi¬ croscope, in the drawing of which it will be more dis¬ tinctly seen. The preceding instrument of Mr Pritchard’s is intended for general purposes ; but as the dissection of botanical and other objects is now a leading object with naturalists, we shall add an account of another microscope, construct¬ ed by Mr A. Ross, with much skill, for Mr W. Valentine of Nottingham, the parts of which are given in consider¬ able detail. A perspective view of this microscope is shown in Plate CCCLIX. fig. 4. It is supported on a closing tripod, aaa, whose feet can be folded together, and are made of hard bell-metal, prevented from springing by edge bars, as seen on the left-hand foot. A firm pillar, which rises from the tripod, carries the stage x, which is fixed on brackets, to give a steady support to the hands of the operator. A capi¬ tal, e, fixed to the top of the tube by three screws, has in its axis a triangular hole, into which is fitted the triangu¬ lar tube/ the lower end of which passes through another similar triangular tube in the piece gg, fixed to the tube. This triangular tube is made to slide up and down by a fixed screw, i, which is wrought by a large milled head, o, which is most judiciously placed at the base of the pillar. At the top and bottom of the triangular tube, at g and near y, are fitted two pieces, with triangular holes through them for receiving the triangular bell-metal bar ss, which moves up and down in them. Ihis bar carries the arm 10 with the lenses. It is moved up and down, so as to ad¬ just the lenses to distinct vision of the objects on the fixed stage, by the rack and pinion t, when a quick adjustment is required ; but when a slow and nicer adjustment is want¬ ed, it is effected by the milled head o. A slit, uv, is made in the shaft of the pillar, to allow the neck of the small milled head t to move up and down; for when the screw is in action by the large milled head o, the triangular tube and the bar move together. The triangular bar is per¬ forated at both ends, the upper perforation for receiving a conical pin, and the lower for admitting the adjusting screw to preserve the length of the bar. The piece w is removed from the side of the pillar, to show the behrings of the pinion <, which are attached to the triangular tube. The bar moves I g inch, and the tube 11, so that we can command an elevation of 3 inches. At the ingenious suggestion of Mr Solly, the screw moved by the milled head o, has fifty ^ an ant^ t^le mi^ed head is graduated into 100 parts, for the purpose of measuring the thickness of any vessel or other object in the direction of the axis of vision. For this purpose the upper surface of the body is brought into distinct vision; the division at which the in¬ dex or pin of the tripod stands is then observed; and the under surface being in like manner brought into focus by turning the milled head o, the division is again observed. I be number of divisions, which are each 5000ths of an *nc ’ etween these two numbers, will indicate, according to Mr Valentine, the space through which the lens has pass¬ ed, which is the diameter of a vessel.2 In this microscope, different parts of an object may be brought into the field, either by moving the stage or the 1 These methods may be found.by the following references i/r- i. P' J7 ’ Butrer:tiel(k Phil. Trans. 1678 ; Sivright, Edin. Phil, journal, Igof volTn^M Dl T°rre’ Phil* Trans* 1765’ P* 246> ^ this is not the case, as the refraction of the light issuing from the In ’ V?i ' mode is, after having observed the upper surface of an object lying upon Iksf remnvwhfnK- 0r.°bj’eJCt is not consklered. The right surface of the glass is seen distinctly : the difference will be the true thick-nn^ tu J16 oble^’ a,n(1 observe the divisions when the instrument on this principle for measuring the thickness of foci of lenses • hut’ 11T1W ^fmuel A is said to have constructed an surface, his results must have been all erroneous. ’ unless he removed his lens after observing the first MICROSCOPE. single Mi-lens, a very important requisite in a microscope used for the i:roscopes. purposes of discovery. With this view, the large stage x is formed of three plates, the lowest of which is fixed to the pillar by the ring 1; and, to make it bear the weight of the hands, it rests upon the strong brackets 2, 2. The under side of this plate is shown in fig. 6 ; the middle plate, fig. 7, contains two pair of dovetail slits, 3, 3 and 4, 4, the widest orifice of each being on opposite sides of the plate. The dovetail pieces in 4, 4 screw into the up¬ per side of the upper plate, fig. 8, the points of the screws being shown at 4, 4 in that figure, while the dovetail pieces in 3, 3 are secured to the upper side of the under plate by the screws 3, 3, fig. 3. The plates are thus moved dia¬ gonally, and at right angles to one another, by the adjust¬ ing screws 7 and 8. One of the screws, with its ball and milled head, is shown in fig. 9. In the adjusting screw 7, the ball is placed in spring couplings, and fastened to the under side of the upper plate. These screws are judi¬ ciously placed, one on each side of the pillar, that the hand may reach them easily and not intercept the light. By turning first one screw, and then the other, or both at once, any part of the object may be brought into the field. The arm for holding the lenses is shown at 10, in fig. 1 and fig. 10. A conical pin projects from underneath, and fits into a hole made down the triangular bar, as shown at 9, fig. 8. The lens will therefore have a circular movement in a horizontal plane, and it may be placed at any point in this plane by the action of the rack and pinion at 10. Hence the most complete adjustment can be obtained without any motion of the stage. The elevated stage for holding the objects is shown at 11 in fig. 4 and 8. A tube, 12, fig. 11, screws into the up¬ per plate, and upon this fits the tube 11, carrying the fin¬ ger spring, shown in fig. 4. Objects of different thickness are thus kept down upon the plates by the pins sliding in the small pipes. An elevated stage is shown in fig. 12, for viewing the sides of objects without disturbing them. A condensing lens, fig. 13, slides into the sockets 5 or 6 ; and fig. 14 shows the pincers, to be applied in the same manner. The large reflector above a, fig. 8, may be removed, and any other illuminating apparatus substituted. That of Dr Wollaston is shown in fig. 15, at 19. The handles 18, 18 serve to move the lens up and down in the tube. The mode of attaching the body of a compound mi¬ croscope is shown in fig. 16. For this purpose the arm 10, fig. 4, is withdrawn, and the conical pin 20 is made to fit in the same hole in the triangular bar. Mr Valentine informs us, that with this instrument he can dissect under a lens ^gth of an inch focus. As the stand and apparatus now described may be used along with all single microscopes, and also with what are called doublets and triplets, we shall now proceed to give an account of the various improvements which the single microscope has undergone. Single Microscopes made of Precious Stones. ilicro- The low refractive power of glass rendered it neces- Mopes of sary, when high powers were wanted, to use lenses with I sms. very short foci, and consequently with very deep curves and very small diameters, so as to admit only a narrow pencil of light into the eye. Sir David Brewster was the first person who pointed 29 out the value of using other materials for the construction Single Mi- of lenses; and he remarked, that no essential improvement croscopes. could be expected in the single microscope, unless from v""*"''' the discovery of some transparent substance, wdiich, like the diamond, combines a high refractive with a low dis¬ persive power. Having experienced the greatest difficulty in getting a small diamond cut into a prism in London, he did not conceive it practicable to grind and polish a diamond lens,1 and therefore did not put his opinion to the test of experiment. He got two lenses, however, execut¬ ed in Edinburgh by Mr Peter Hill, an ingenious optician, the one made of ruby, and the other of garnet; and these lenses he found to be greatly superior to any lenses that he had previously used. Dr Goring, whose zeal and success in the improvement of microscopes has not been surpassed, directed the atten¬ tion of Mr Pritchard in 1824 to the passages in Sir David Brewster’s Treatise on New Philosophical Instruments, re¬ specting the value of the precious stones for single micro¬ scopes ; and having immediately seen their full force, it was agreed that they should undertake to grind a diamond into a magnifier. Diamond Lenses. The history of this attempt is so interesting, that we Diamond must give it in Mr Pritchard’s own words:—“ For thislenses- purpose,” says he, “ Dr Goring forwarded me a small bril¬ liant diamond to begin upon ; and it was proposed to give it the curves that in glass would produce a lens of a twen¬ tieth of an inch focus, with the proportion of the radii of their surfaces as two to five. This stone I ground with the proper curves, and polished the flatter side, contrary to the expectations of many whose judgment in these matters was thought of much weight, who predicted that the crystalline structure of the diamond would not permit it to receive a spherical figure. When thus far advanced, fate decreed that I should lose the stone, and my only con¬ solation was, to discover afterwards, that had it been com¬ pleted, its thickness and enormous refractive power would probably have caused the focus to fall within the substance of the stone. “ Having, however, in this experiment proved the possi¬ bility of working lenses of adamant, I set about another, and selected a rose-cut diamond, in order to form it into a plano-convex lens, and thereby save a moiety of the labour. “ In the progress of working this stone, the heat generat¬ ed by friction, in the course of the abrasion of the diamond, was perpetually melting the cement (shell-lac) by which the flat side was affixed to the tool, and compelled me to seek some means by which it might be prevented. After several trials, I found, that when a portion of finely powder¬ ed pumice-stone w^as mixed with the shell-lac, the cement was much stronger, and less liable to melt, than any other similar substance. “ On the first of December 18241 had the pleasure of first looking through a diamond microscope, and it was doubt¬ less the first time this precious gem had been employed in making manifest the hidden secrets of nature. A few days after, I had polished it sufficiently to put it into the hands of Dr Goring, who tried its performance on various objects, both as a single microscope and as the objective of a com¬ pound. He states in a letter addressed to me, dated 3d 1 Mr Pritchard informs us (see Edinburgh Journal of Science, No. 1, new series, p. 149, July 1829), that Messrs Rundell ami Bridge of Ludgate Hill had, at the time when Mr Pritchard began his experiments, many Dutch diamond-cutters at work; anu that the foreman, Mr Levi, with all his men, assured him, that it was impossible to work diamonds into spherical lenses. 1 he same opinion, he adds, was also expressed by several others, who were considered of standard authority in such matters. v hen iV i Pritchard had, contrary to the expectation of many, succeeded in finishing his first lens, it was examined by Mr Devi, who ex¬ pressed great astonishment at it, and added, that he was not acquainted with any means by which that figure could have ecu effected. 30 MICROSCOPE. Single Mi-January 1825, ‘ that it has shown the most difficult trans- croseopes. parent objects I have submitted to itand again, ‘ I can clearly perceive the amazing superiority it will possess when completely finished.’ I must, however, inform my readers, that we discovered in this state various flaws in the stone, in consequence of which we abandoned all thought of completing it. In this condition the project remained for about a year, when I determined to resume my attempts ; and having worked several stones into lenses, I at last succeeded in obtaining a perfect one. In the course of these labours, a new though not unexpected de¬ fect appeared in several lenses, which would have subvert¬ ed the whole scheme, had not the first diamond lens been free from it. “ These lenses, instead of giving a single image like the first, gave a double or triple one. This rendered them utterly useless as magnifiers, and made the defects of soft and hard parts in the same stone, and the small cavities in others, of comparatively trifling consequence. The images exhibited in such lenses overlapped each other, but were never entirely separated, though the quantity of overlap¬ ping varied in different specimens. It was now evident that these defects arose from po¬ larisation, though this stone is described as ‘ refracting single.’ I subsequently learned from Dr Brewster, after I had overcome these obstacles, that this property of the diamond had been observed by him, and an account of it given in the Edinburgh Philosophical Transactions.1 On referring to his paper, it appears Dr Brewster found that some stones ‘ polarised in particular parts, while other portions of the same stone ivere quite free from any trace of polarity, and thus perfectly adapted to our purpose, as had previously been demonstrated in the first diamond lens. “ Notwithstanding these difficulties, and the consequent expense and labour they entailed on me before sufficient¬ ly experienced in working upon this refractory7 material with certainty, I have now the satisfaction of being able, by inspection a priori, to decide whether a diamond is fit for a magnifier or not; and have now executed two plano¬ convex magnifiers of adamant, whose structure is quite perfect for microscopic purposes. One of these is about the twentieth of an inch focus, and is now in the posses¬ sion of his Grace the Duke of Buckingham ; the other, in my hands, is the thirtieth of an inch focus, and has conse¬ quently amplification enough for most practical purposes.”2 As the expense of the diamond, and the labour of work- ing it, are very great, about fifty or sixty hours being neces¬ sary to complete a diamond lens with double convexity, it is of the greatest consequence to ascertain beforehand if the substance of the diamond is homogeneous, that is, free from difference of density or double refraction, and if it does not contain any small cavities. The best way is to exa- rmne the stone, by cutting two flat faces upon it, unless it is a lashe or table diamond, which always has two flat faces upon it; but this labour may often be avoided bv examining it when plunged or held in a glass trough con¬ taining oil of cassia, the fluid which approaches nearest to it m retractive power. This will diminish all the re¬ fractions at the irregular surface of the diamond, and make any internal imperfections as easily seen as if its substance was plate-glass. Abemtbn By comparing the indices of refraction of diamond and diamond ^aSS’ ^ ma{ ^eashy shown that the same magnifying and glass P°Werf raay.be obtained with a diamond lens having its compared. c'irvature with a radius of 8, as with a glass lens, the radius of whose curvature is 3; and as the spherical aberration increases with the depth of curvature or the thickness of the lens, a lens of diamond will bear a much larger aper- single I ture than one of glass before indistinctness of vision is croscop produced. Mr Pritchard has given a very useful ocular representation of the relative value of a Fig. 1. diamond and a glass lens. In the annex¬ ed figure, G is the section of a semi-lens of glass, and D the section of one of dia¬ mond, so placed that their principal focus F shall be at the same point. In the diamond semi-lens the marginal rays will intersect the axis at d, and in the glass semi-lens at g ; the longitudinal aberration being rfF in the diamond, and ^F in the glass lens. In order to obtain a numerical increase of these aberra¬ tions, Mr Pritchard computed them from the formula, and found that of the diamond lens to be fthsof its own thick¬ ness, that of the glass lens being^ths of its thickness ; and by taking the thickness of the diamond lens to be 255, while that of the glass is 758, he obtained fths of 255 — 108, and £ths of 758 = 884, and hence it follows that the actual aberration of a diamond lens is only about one ninth of the aberration of a glass lens of the same power and aperture. If we suppose the diamond lens to be ground on the same tool with the glass lens, so as to have the same cur- vatuie, the same thickness, and the same diameter, the longitudinal aberration of the diamond will be to that of the glass lens as 43 is to 117, or nearly one third of it; and if we suppose the focal length of both to be ^th of an inch, the magnifying power of the diamond lens will be 2133, while that of the glass one will be only 800. In order that a lens of glass may have the same magnifying power as that of the diamond above mentioned, its focal distance would require to be only the 200th part of an inch. I he durability of the diamond lens is also another va¬ luable property, which allows it to be burnished into a disc of metal, and taken out and cleaned without any danger of being scratched. In treating of microscopic doublets and achromatic microscopes, we shall have occasion to recur again to the diamond lens. Sapphire Lenses. ..JP16 ruby and the sapphire are the same substance, „ o'.:!"1"/0" 7 in x fjjl pie, e = l,2r, or 3 of an inch. When Professor Amici visited London in 1827, he Amici, brought writh him some compound object-glasses, which performed very well; and Mr Lister has since learned from him that he has executed a combination of 2*7 lines in focal length, and 2'7 lines in aperture, which greatly ex¬ cels the former. Among the most successful improvers of the achromatic Mr Lister, microscope we must rank Mr Jackson Lister, who has dis¬ covered some curious and valuable properties of these lenses that have escaped the notice of the most skilful analysts. Mr Lister has investigated the subject entirely as a matter of observation, and therefore his results are more likely to have a higher practical value. Mr Lister takes as the basis of a microscopic object- glass two conditions, 1. that the flint glass shall be plano¬ concave ; and, 2. that it shall be joined by some cement to the convex lens. The first condition obviates the risk of error in centring the two curves, and the second dimi¬ nishes by nearly a half the loss of light from reflection, which is very great at the numerous surfaces of a combi¬ nation of compound object-glasses. Now Mr Lister has found that in every such compound lens which he has tried, whether the flint glass was Swiss or English, with a double convex of plate glass, which has been rendered achromatic by the form given to the outer curve of plate glass, the ratio between the refractive and dispersive powers has been such that its figure has been correct for rays issuing from some point in its axis not far from the principal focus on its plane side; and these rays either tend to a conjugate focus within the tube of the microscope, or emerge nearly parallel. If AB represents such an object-glass, let us suppose that it is free from spherical and achromatic aberration for a ray FDEG radiating from F, then the angle of emer¬ gence GEH will be about three times as great as that of incidence FDI. If the radiant point is now made 1 Treatise on the Eye and Optical Instruments, p. 58, 59, § 329. * Phil. Trans. 1830, p. 188. 40 MICROSCOPE. Fig. 23. scopes. Compound to approach the lens, the angles of incidence Micro- and emergence will approach to equality, and the spherical aberration produced by the two will bear a less proportion to the oppos¬ ing error of the single correcting curve ABC, and hence in this case the rays will be over¬ corrected for such a focus. As F continues to approach the lens, the angle of incidence continuing to increase, it will exceed that of emergence, which has been in the mean time diminishing, so that the spherical aberration produced by the two outer surfaces will recover their original pro¬ portion. When F has reached this point F7 (at which the angle of incidence does not ex¬ ceed that of emergence so much as it had at first come short of it), the rays will again be free from spherical aberration. If F" still comes nearer the lens, or is carried beyond F in the opposite direction, the angle of inci¬ dence in the former case, or of emergence in the latter, becomes disproportionately effective, and in either case the aberration exceeds the correction, or the rays are under-corrected. Hence Mr Lister gives the fol¬ lowing rule. That in general an achromatic object-glass, of which the inner surfaces are in contact, or nearly so, will have on one side of it two foci in its axis, for the rays proceeding from which the spherical aberration will be truly corrected at a moderate aperture ; that for the space between these two points, its spherical aberration will be over-corrected, and beyond them either way, under-corrected!’ Mr Lister found also, “ that when the longer aplanatic focus is used, the marginal rays of a pencil not coincident with the axis of the glass are distorted, so that a coma is thrown outwards, while the contrary effect of a coma di¬ rected towards the centre of the field is produced by the rays from the shorter focus.” These interesting results obviously furnish the means of destroying both aberra¬ tions in a large focal pencil, and of thus surmounting what has been hitherto the chief obstacle to the perfection of the ^microscope. And when it is considered that the curves of its diminutive object-glasses have required to be at least as exactly proportioned as those of a large tele¬ scope, to give the image of a bright point equally sharp and colourless, and that any change made to correct one aberration was liable to disturb the other, some idea may be formed of what the amount of that obstacle would have been. It will, however, be evident, that if any object- glass is but made achromatic, with its lenses truly worked and cemented, so that their axes coincide, it may with certainty be connected with another possessing the same requisites, and of suitable focus, so that the combination shall be free from spherical error also in the centre of its field. For this the rays have only to be received by the front glass L, from its shorter aplanatic focus F, and transmitted in the direction of the larger correct pencil FA of the other glass A. It is desirable that the latter pencil should neither converge to a very short focus, nor be more than very slightly, if at all, divergent; and a little attention at first to the kind of glass used will keep it within this range, the denser flint being suited to the glasses of shorter focus and larger angle of aperture. If the two glasses which in the diagram are drawn as at some distance apart, are brought nearer together (if the place of A, for instance, is carried to the dotted figure), the rays transmitted by B in the direction of the larger aplanatic pencil of A, will plainly be derived from some point (Z) more dis- Compou tantthan F", and lying between the aplanatic foci Fig. 24. Micro " of B; therefore (according to what has been stated) SC0Pei this glass, and consequently the combination, will then be spherically over-corrected. If, on the other hand, the distance between A and B is increased, the opposite effects are of course produced In combining several glasses together, it is often ^ convenient to transmit an under-corrected pencil from the front glass, and to counteract its error by over correction in the middle one. Slight errors in colour may, in the same man¬ ner, be destroyed by opposite ones; and on the principles described, we not only acquire fine cor¬ rection for the central ray, but by the opposite effects at the two foci in the transverse pencil, all coma can be destroyed, and the w hole field rendered beau tifully fiat and distinct.1 Compound Achromatic Microscopes, with Solid and Fluid Lenses. In 1812, a very simple method was employed by SirCombina David Brewster, for making both single and compound donofso achromatic microscopes. Almost all objects are seen tofncJ the greatest advantage when immersed m a fluid, even the finest test objects, such as the scales of the Podura. Hav¬ ing placed the object on a piece of glass, he put above it a drop of an oil having a greater dispersive power than the single lens, or than the concave lens which formed the object-glass of the microscope. The lens was then made to touch the fluid, so that the surface of the fluid was as it were formed into a concave lens. Now if the radius of the outw'ard surface of this lens was such as to correct the dispersion, we have here a perfect achromatic microscope, both simple and compound. The best way is to over-correct the colour of the plate-glass lens by the fluid, and then to reduce the dispersion of the fluid by mixing it with one of a less dispersive powrer. This will be understood from the annex ed diagram, where AB is an unequally convex lens, the flat¬ test side of which is plunged in the fluid nin, placed in a watch-glass CD. The object is placed at mn, and the disper¬ sion of the concave surface of the fluid compensates that which is produced by the lens. Fig. 25. . j — All errors of centring are here removed, and also the loss of light at the touch¬ ing surfaces of solid lenses. If AB is a single microscope, the object mn will be placed in its principal focus, and the emergent parallel rays will enter the eye; but if it is the object-glass of a compound microscope, an image will be formed a few inches behind AB, by withdrawing AB a little from mn, or placing the object a little without its prin¬ cipal focus. We have already had occasion to describe an achromatic grooved sphere, but in the process of ach¬ romatizing it, the sphere loses in a very small degree its valuable property of refracting in the very same manner all tiie pencils that enter the eye. This property, how¬ ever, may be preserved in the bird’s-eye sphere by the acm omatic method which we have now described. Let ■t B be the grooved sphere, and CD the watch-glass con¬ taining the fluid; it is obvious that every ray which passes tirough the centre of the sphere will enter and quit it peipenchcularly, without suffering any refraction. The same mode of achromatizing the sphere AB may be adopt- 1 PhiL Trans. 1830, p. 199. MICROSCOPE. 41 impound Micro¬ scopes. .chroma- ic grooved nhere. iystem of olid and uid ach- omatics. ed with a solid concentric concave Fig. 26. lens ABCD of flint-glass or other substance, or the sphere may be pla¬ ced between two such concentric lenses. The greater the dispersion of the flint-glass, the nearer must the outer surface CD approach to AB. By these means the grooved sphere may be rendered perfect, both as a single microscope and as the object- glass of a compound one. The principle above described may be applied to a sys¬ tem of object-glasses like those of Selligues’ microscope. Let A, B, E be three convex lenses, so placed at the end of the tube of a compound microscope, that the high¬ ly dispersive fluid in the watch-glass CD will enter between the glasses A, B, and E. The concave lenses of fluid will over-correct the three lenses A, B, and E; but if a very deep curvature on the outside of A is not sufficient to compensate this over-correction, it may be effected by a suitable lens at F. If the three lenses are made of the precious stones, with a high refractive power and a low dispersive one, the concave fluid lenses wall not over-correct them. Description of Mr Pritchard's Compound Achromatic Mi¬ croscope. ritchard’s This instrument is represented in Plate CCCLX. fig. jmpound. 21, 22, 23, as fitted up by Mr Pritchard. All its parts are so distinctly shown in the figures, that they require no description, especially as the uses of most of the parts have been described in a former chapter. Fig. 21 is a perspective view of the instrument in its most convenient position for examining transparent objects by reflected light. The stops and condensing illuminator, which are seen under the stage, should be removed when particular objects are viewed. When test objects are to be viewed by direct light, the instrument can be turned round. Fig. 22 shows the position of the instrument for dissecting. The rest for supporting the hands is shown at a, and the large moveable stage at h. Fig. 23 shows the proper po¬ sition of the instrument for viewing opaque objects by the concave reflector c. In front of c, the object is placed upon a black or white ground, according to its nature ; and the light of the candle, collected and thrown upon the mir¬ ror c by the condensing lens, is again reflected by the mirror upon the object. Fig. 22 is an eye-piece ; and fig. 23 represents an apparatus for holding a bottle to show aquatic plants and animals. In Mr Pritchard’s instrument the following are the di¬ mensions and powers of the lenses for a complete micro¬ scope. Sidereal Focal Length in Parts of an Inch. 1 1 2 i R tV Angle of Aperture. 16° 21 42 55 65 Compound Deflecting Microscopes. Newton’s reflecting micro¬ scope. Compound Sir Isaac Newton seems to have been the first person scopes, who described a reflecting microscope. He communicated Y—»~' his plan to Oldenburg in 1679, as shown in the annexed Sir Isaac diagram, where AB is a concave specu- Fig. 28. lum, O the object, F the place where c an image of it is formed, and CD an eye-glass for mag¬ nifying it. In another letter to Oldenburg, dated 11th July of the same year, he refers to another improvement on microscopes, which is to “ illuminate the object in a darkened room, with the light of any convenient colour, not too much compounded; -for by that means the micro¬ scope will, with distinctness, have a deeper charge and larger aperture, especially if its construction be such as I may hereafter describe.” We are not aware that this idea was ever further developed by its author.1 Mr Potter s Improvement upon it. Mr Potter2 has recently described “ a new construction ]yfr p0t_ of Sir Isaac Newton’s microscope,” principally with theter’s im- view of removing the difficulty of illuminating the object, provement His first construction was for opaque objects ; and in order uPon lt" Fig. 29. Jk: Magnifying Powers in Dia¬ meters by a Standard of 5 Inches. 60 to 100 100 to 360 240 to 500 500 to 1100 900 to 3000 Of these object-glasses, that whose focal length is ^th of an inch appears to be the most perfect and useful. to illuminate them, he cut a large circular aperture abc in the tube, between the object and the speculum ; but the light which fell on the sides of the tube occasioned a good deal of indistinctness in the field of view. This defect, however, was completely removed by lining all the lower parts of the tube with black velvet. Mr Potter found it advantageous to concentrate the light on these objects that required it, by a large lens at d. For transparent objects he applied a lens, as shown at e. Its convergent beam is reflected on the object placed at the end of the wire a, fixed to a handle h, by means of a small diagonal mirror in the axis of the tube, and inclined to this axis 45°. By this means a very strong light may be thrown through, and past the object. By means of moveable caps to cover the opening abc, and the lens e, all interference of foreign light is prevented ; and without altering the po¬ sition of the object, both methods of illumination may be successively adopted. Mr Potter attaches his objects to thin brass pins a stuck into wooden handles h, and these pins pass through a slit cut into a small piece of cork attached to the sliding piece g, which at the same time carries the lens e and the plane mirror, the whole of which are moved by the small arm connected to the crank, as at i. The adjustment of the object to the focus of the mir¬ ror is effected by turning a nut attached to the pivot on which the crank is fixed. In the microscope used by Mr Potter, he employs a spe¬ culum one inch in diameter, with a focal length of 1-^ inch ; and he generally employs a distance of from 12 to 14 inches between the object and the image. This size of the speculum allows him to place an insect 1 Brewster’s Life of Sir Isaac Newton, p. 311. VOL. xv. s Edinburgh Journal of Science, Jan. 1832, No. XL p. 61. p 42 MICROSCOPE. Compound or other object of £th of an inch square in the tube, with- Micro- out any perceptible bad effect resulting from it. scopes. When Mr Potter had adjusted the illuminators in the manner which we shall afterwards have occasion to de¬ scribe, he “ saw quite easily what are called the diagonal lines on the scale from the wing of the white cabbage butterfly, which has been proposed as a difficult test object by Dr Goring ; and it is such a one as those who have only seen the stronger longitudinal striae or scales from the wings of moths and butterflies have little idea of.” Mr Potter was also able to resolve a delicate blue tissue in the web of a spider called the clubiona atro'x, into its compo¬ nent fibres. The great size of speculum used by Mr Potter arises from his being able to give all his specula a true ellipsoidal figure, so as to remove all spherical aberration.1 We have in our possession two of Mr Potter’s instruments, one of them with a spherical and the other with an ellipsoidal mirror. The quantity of light and the defining power of the latter are unusual in such instruments. Amici’s Reflecting Microscope. Amici’s re- croscope. This instrument is shown in section in the annexed fleeting mi-ggure^ vv]iere a js a small ellipsoidal speculum about 1 inch in diameter, and 2^ths in focal length. The object is placed on a stage mn, below the tube of the microscope, and the rays which issue from it fall upon a small specu¬ lum h inclined 45° to the axis of the ellipsoidal speculum, in the same manner as if the object had been placed in the tube as far to the right hand of the small mirror as it is below it. An image of this object is of course formed in the.other focus of the ellipsoidal speculum, and may be viewed by a single or double eye-piece, as in other com¬ pound microscopes. Professor Amici, however, uses a negative eye-piece, consisting of two plano-convex lenses A, B. Fig. 30. The new and peculiar part of this instrument is the use of the small speculum, which allows the object to be placed without the tube, and illuminated with the utmost facility. Dr Goring, to whom science is indebted for the perfection of the reflecting microscope, remarks, that “ the instru¬ ment was turned out of Professor Amici’s hands in a rough and ineffective state, owing to the concave metal being of too long a focus and too small an angle of aperture, and the diagonal one (or small mirror 6, which was half an inch in diameter) of too large a diameter, which caused it to in¬ tercept too large a quantity of light from the other, leav¬ ing only a narrow rim of reflexion to enter the retina, which occasioned a disagreeable nebulosity in the middle of the field of view, unless the eye-glass was of great depth.”2 Dr Goring's Improved Reflecting Microscope. Goring’s reflecting micro¬ scope. Mr Cuthbert, an ingenious London optician, constructed one of Amici’s instruments, the speculum having li inch of aperture, and a focal length of 3 inches, and the body of the microscope being about 1 foot long. Dr Goring and he having tried it on the test objects which the doctorCompoun had newly introduced, found its performance quite unsa- Micro- tisfactory. Dr Goring, therefore, recommended that the SC0Pes. speculum should be only half an inch in focal length, and the body 4 or 5 inches long. Mr Cuthbert accordingly finished a pair of metals six tenths of an inch in focal length, and only three tenths in diameter. The excellent perform¬ ance of this instrument induced Dr Goring and Mr Prit¬ chard to turn their attention to its improvement; and, as Mr Cuthbert3 has been able to execute perfectly ellipsoidal metals, having an aperture equal to their sidereal focal length, or 54°, and of so small a diameter as three tenths of an inch, they have been able to produce an instrument of a very perfect kind. This microscope is represented in Plate CCCLXI.fig. 26, 27, where the instrument is seen to rest on a tubular pillar, its body being held by a split socket. The pillar is screw¬ ed to a solid cruciform stand, to one of the legs of which an adjusting screw is applied, to produce steadiness. The body moves round a cradle joint at the top of the pillar, and may be firmly fixed at any degree of inclination. The body of the microscope is shown at a, the eye-tube at d, and the eye-piece, which is a Huygenian one, at e. The focal lengths of the interior glasses of the eye-pieces, of which there are usually three, are three fourths, three eighths, and three sixteenths of an inch. The tube con¬ taining the specula is shown at be. The triangular bar which carries the illuminating reflector, the stage, and the apparatus for adjustment, is shown at/, and is soldered to the neck of the body. The mirror k is plane on one side, and has a plaster of Paris surface on the other. The stage / is a combination of rack and screw work, wrought by two concentric milled heads at m. The smallest of these moves the object in the direction of the body, and the other in an opposite direction. The stage can be lifted out of the triangular socket q, which carries the adjusting screw i for obtaining distinct vision, and the clamping screw h. When the body and stand are used for a compound ach¬ romatic microscope, a tube, shown in fig. 27, and containing the compound object-glasses below it, increasing in dia¬ meter from the object, is screwed into the body at b, in place of the tube be. A rectangular prism, shown in dotted lines, reflects the pencils that pass through the ob¬ ject-glasses along the axis of the tube be to the eye-piece e. The following sets of metals are made for the reflect¬ ing microscope. No. Solar Focus. Angle of Aperture. Distance between Object and side of the Tube. .2 inches. .1 _(L •10 4 *1 0 3_ • 1 0 3 •id 13f° i inch. 181 J 27i 36f 10 2d 41£ almost 0 55 The metals No. 1, 2, and 3 are those most useful for examining opaque objects. No. 3 is excellent also for all kinds of transparent objects. No. 5 can scarcely be used for opaque objects, as it leaves almost no space between the tube and the object for allowing the latter to be illu¬ minated. No. 6 cannot be used at all for opaque objects, but is especially intended for the most difficult class of transparent test objects. ' The process by which he does this is fully described in the Edinburgh Journal of Science, No. 12, new series. 3 Goring and Pritchard’s Micragraphia, p. 23. ’ 3 I he process by which Mr Cuthbert is able to accomplish this difficult task is similar to that by which he jrives truly hvnerbolic figure, to the min ors of small Gregorian telescopes, with three inches of aperture and five inches of focal lengS 7P MICROSCOPE. Dr Smith's Reflecting Microscope. 43 Having constructed one of Sir Isaac Newton’s micro¬ scopes in 1738, Dr Smith of Cambridge observed that the colours of objects were much more beautiful and natural than in refracting microscopes. He found that objects were very distinct and sufficiently light when the micro¬ scope had the following dimensions :— Focal length of the speculum 2^ inches. Diameter of ditto 1 P’ocal length of the plano-convex eye-glass 2j llatio of the distance of the object from the fo¬ cus of the speculum to the focal distance of the speculum 1 to 19. Finding that, in order to obtain a high magnifying power, the speculum required to be very concave and small, he contrived another microscope with two reflecting spherical surfaces of any size, but so related to each other that the second reflexion should correct the aberration of the first. This instrument is shown in fig. 31. Fig. 31. Dr Smith’s microscope is shown in fig. 31, where AA is a concave spherical speculum, having its polished convex jects cannot be illuminated, as stated by Dr Goring Diameter of the hole in the concave speculum 0T43 Compound Diameter of the hole in the convex speculum 0*049 Micro- Magnifying power, the focal length, &c. of the eye scopes. being 8 inches 300 times.' ihe dimensions of the instrument in our possession is very different: Diameter of the concave speculum 2T7 inches. Focal length g-17 Diameter of the hole in it ’ 0*376 Diameter of the convex speculum 1*03 Diameter of hole in it 0*10 Diameter of stop 0*13 Distance of stop from hole in convex speculum..0*67 Distance of specula 3*80 Focal length of doubly convex eye-glass 0*17 Sir David DreivsterTs Reflecting Microscope. Notwithstanding the excellence of Professor Amici’s Sir David miscroscope, as constructed with Dr Goring’s improve-Brewster’s ments and with Mr Cuthbert’s specula, we are quite reflecting convinced that it does not owe these advantages to themicro' peculiarity in its construction which constitutes it a dif- SC01IC' ferent instrument from Newton’s. This peculiarity is in our opinion a disadvantage, and we consider the in¬ strument as recommended solely by its possessing an ellip¬ soidal speculum, with a large angle of aperture. The only advantage which can be ascribed to Amici’s instrument is a more convenient mode of illumination, though not much more so than Mr Potter’s; but this advantage, whatever be its amount, is purchased at great sacrifices. 1. The whole instrument is an ajwkward-lodking piece of mecha¬ nism, with its triangular bar and all its appendages dang¬ ling at one end of it. 2. It cannot be used in the vertical position, which we consider a very great defect. 3. By the use of the small reflecting speculum, more than one half of the whole light is lost. 4. With small concave spe¬ cula, such as those j^ths of an inch in diameter, opaque ob- surface inwards. The rays from an object o placed in the slider mn will be reflected from the concave speculum The construction which has been proposed by Sir David Brewster to remedy most of these defects is shown in the 44 MICRO Compound either screw upon the outside of this tube, or, what is bet- Micro- ter, upon a stronger piece of tube forming part of the arm ^ scopes. ^ £)£. a concave illuminating reflector kh, for opaque ob- ^^^"^jects, may screw on the back of the speculum cd, or that speculum may be made thick, and ground and polished on both sides, so that while one side magnifies the objects, the other illuminates them. It is obvious, that rays proceeding from an object at mn will be reflected from the plane speculum e, upon the con¬ cave speculum cd, exactly as if the objects were placed at r, as far above e as mn is below it, and an image of it would be formed in the other focus of the ellipsoid, r being the one focus, if the rays wrere not intercepted by the eye-piece AB, by which the image is farther magnified. By this mode of construction, the whole of the reflecting micro¬ scope, in place of having a separate stand and separate ap¬ paratus costing a large sum of money, is comprehended in the little t\xhe abed, and may be considered as a reflect¬ ing object-speculum, forming part of a general microscope, furnished with single lenses, doublets, and compound ach- romatics. By the means now described are removed all the de¬ fects which we enumerated as belonging to Amici’s com¬ bination, except the third, which is one of such import¬ ance that it is of consequence to consider how far it is capable of being remedied. Sir David. Brewster has proposed to get rid of this loss of light by placing the ob¬ ject as in Amici’s instrument, outsideof the tube, but in¬ clined to its axis, and refracting its rays upon the specu¬ lum cd, by means of an achromatic prism e, in a manner ana¬ logous to his method of producing a similar effect in the INewtonian telescope.1 Hie faces of this prism are equally SCOPE. Solar am CHAP. III.—ON SOLAR AND OXYHYDROGEN MICROSCOPES. oxyhvdrd The solar microscope is a well-known popular instru-gen Mlcro ment, for exhibiting on a white screen in a dark chamber, scofes^ magnified images of minute objects, illuminated by the condensed light of the sun. As the sun cannot often be commanded in our climate, this instrument may be consi¬ dered as having fallen into disuse ; but the discovery of the lime-ball light by Mr Drummond amply supplies the place of the great luminary, in so far as the microscope is concerned. The instrument has accordingly been revived under the name of the oxyhydrogen microscope, and is now a favourite public exhibition. The solar microscope was proposed by Dr Lieberkhun in 1738; and early in 1739, when he paid a visit to Lon¬ don, he exhibited an instrument of his own construction to several members of the Royal Society, and to Mr Cuff', Mr Adams, and other London opticians. This microscope is nothing more than a convex lens, in Solar mi. front of which, a little farther from it than its principal croscope. focus, is placed a microscopic object, the rays of the sun being reflected in a horizontal line, and condensed by a lens. This will be understood from the annexed figure, Fig. 34. Fig. 33. inclined to the axis of the microscope and the axis of the pencil issuing from the point of the object under examina¬ tion. As the prisms of plate and flint glass which compose e are cemented by a substance of nearly the same refractive power, there will be no farther loss of light than what is reflected at the two surfaces. A socket may be placed at D, for holding an illuminating lens, or the little apparatus tor opaque objects, shown in Plate CCCLXI. fig. 27. But m order to avoid the encumbrance and expense of separate stands and apparatus for this, as u'ell as Amici’s form of the instrument, we would propose that a strong piece of tube s lould be inserted in the opening, above mn, to screw into the upper side of the projecting arm, as shown in the pre- ceding figure ; or a solid screw attached to the upper side of the tube, a little to the right hand of C, and above the opening, might screw into the lower end of the projecting arm ’- In these cases the object at mn will be placed on the ordinary stage, and illuminated in the common man- ner; but it will be necessary to have a counterpoise at D to balance the weight of the body ABC. 1 Those who are acquainted with the principle of the Cassegraiman telescope, and of Dr Smith’s compound mi¬ croscope, will readily see that the reflecting microscope With the perforated speculum, may be converted IntT a more compound reflector, analogous to Dr Smith’s bv making the little speculum e, fig. 33, convex, the figures of d and e being made hyperboloids. ° where CD is the convex lens, E the object placed before it, and AB the illuminating condenser. An enlarged image °f E wil1 be formed to the right hand of CD, on a wall or screen, and the size of the enlarged image will be to that of the object as the distance of CD from the screen or wall is to CL, the distance of the object from the lens. Dr Liebeikhun s solar microscope had no mirror for re¬ flecting the sun s rays into the tube, so that it could only e used a few hours, w7hen the tube could be convenient- y pointed to the sun. The improvement of adding a mir¬ ror was made by Mr Cuff, who constructed the instrument in a very superior manner.2 Dr Lieberkhun subsequently fitted up the solar microscope to show opaque objects ; but the method which he employed is not known. Since the time oi Mi Cuff, the solar microscope has undergone many improvements. Mr Benjamin Martin added greatly to the value of this instrument, by fitting it up both for opaque rv^tT^^rent °bjects> in the manner shown in Plate XL figs. 28 and 29. In fig. 28 it is shown as fitted up APnffTf objects. The body ABCDEF has the part ABCD of a conical, and the part CDEF of a tubular form. A large convex lens, corresponding with AB, in fig. 34 is placed at AB, at the end of the conical tube ABCD, which screws into the square plate QR, which is fastened to a window-shutter opposite a hole of at least the size of rlV enSiTu by -means of the screw e> (L Upon the square plate QR there is a moveable circular plate abc. To this circular plate is attached the silvered glass mirror NOP, p aced in a brass frame, which moves'round a joint PP, and which may be placed in any position with regard to mpe-\S0 a? t0 ^fleCt3 his rays into the tube ABCD by O mnv°f yrk'W01t an(! pinions at Q and The pinion i 16 Cir?lar Plate abc (to wbich the mirror NOP tL nm Rin-a p ane perpendicular to the horizon, while the nut R gives it a motion in an opposite plane. The Treatise on Optics, Lardner’s Cabinet Cyclopedia, p, 354. See Baker on the Microscope, vol. i. p. 22. MICROSCOPE. 45 5olar ami light introduced by this mirror falls upon the lens AB, |(ixyh_vdro-which throws it in a condensed state upon any object in j?n Micro-the tube. But before it reaches the opaque object, it is scopes. recejve(j hy a mirror M, placed in the box HILX, which ~J"^Y reflects the condensed light back upon the face of the ob¬ ject E, fig. 34, next to the lens CD, fig. 34. This mirror is adjusted to a proper angle by the screw S. Above the body ABEF is seen the part /VK which carries the sliders or objects, and the object-glass or lens CD, fig. 34. The tube K slides within the tube V, and V again slides into the box HILX. These tubes carry each a magnifying lens. The inner tube K is sometimes taken out of the other V, seen within the box, and used alone. The sliders and objects are introduced into a slit or open¬ ing at H. The brass plate to the left of H is fixed to a tube A, by means of a spiral wire within the tube, which presses the plate against the side of the box HILX, so that the sliders, when placed in the opening, are pressed against the side of the box. In using this microscope, the sun s rays are first made to pass along the tube ABCD, by the nuts Qand It. The box for opaque objects, HILX, is then slid by its tube G into the tube EF. The slider containing the object, hav¬ ing its face to be examined turned to the right hand, is then pushed into the opening at H, till the object is in the centre of the tubes V, K. The condensed light falling on the mirror M is then thrown back on the face of the ob¬ ject in the slider, and the door hi shut. Upon a white paper screen or cloth, from four to eight feet square, and placed at the distance of from six to ten feet from the window, the observer, in the room made thoroughly dark, will see on the screen a magnified representation of the object, which may be rendered distinct at different distances of the screen, by pulling out or pushing in the tubes V, K containing the convex lenses. As the sun is constantly moving, its rays must be kept in the axis of the tubes by now and then turning the nuts Q and R. When the microscope is to be used for transparent ob¬ jects, the box HILX, with its tube G, and other appen¬ dages, is removed, and the apparatus shown in fig. 31 sub¬ stituted for it. This is done by sliding the tube Y of fig. 31 into the tube EF of fig. 30. A slider containing the mag¬ nifying lens is then slipped through the opening at n, and a second condenser may or may not be inserted in the opening at h. The slider with the object is then placed in the opening m, and when its magnified picture falls upon the screen, it is adjusted to distinctness by turning the milled nut O. The picture formed by a solar microscope being in Dr Robison’s opinion “ generally, so indistinct that it is fit only for amusing ladies,” he proposed to use as an object- glass the achromatic eye-piece of four lenses, constructed by Mr Ramsden for telescopes. Having made the experi¬ ment, he found the image “ perfectly sharp,” and recom¬ mended this application “ to the artists, as a valuable ar¬ ticle of their trade.” A much simpler method, however, of correcting the de¬ fects of the microscope, is to use compound achromatic lenses, which were first suggested by Mr Benjamin Martin. Another mode of improving the instrument was pro¬ posed in 1812 by Sir David Brewster,1 who has de¬ scribed a new solar microscope, which can be rendered achromatic. The method of doing this is shown in the diagram, fig. 34, where AB is the condensing lens, and CD the object-glass, cemented firmly into one end of a Solar and tube mCDw, which has a tubular opening at E, while the Dxyhydro- other end of the tube has a circular piece of parallel glass £en, "^lcro" cemented upon it. The tube »iCD» is then filled with ^ scoPes- ^ water, or any other fluid; and the object, when placedAchroma- upon a slider, or held in a pair of forceps, is introduced tic solar at the opening E into the fluid. The mechanism for pro- niicro- ducing these effects is easily conceived. By the instru- sc0Pe- ment thus constructed, imperfectly opaque and corrugated objects, rendered transparent, and extended by the fluid medium, may be examined in this microscope, though in¬ capable of being used in any other. Objects may be even dissected in the aqueous tube. Nay, objects preserved in spirits might be exhibited by immersing the bottle, if it is small, in the trough or tube mCD/?..2 But the most important purpose effected by this form of the instrument is, that it can be rendex-ed perfectly achro¬ matic by using a fluid of higher dispersive power than the glass lens CD, and making the interior curvature of the side CD, which touches the fluid, of that degree of con¬ vexity which will convert the fluid into a concave lens ca¬ pable of correcting the colour of CD. The lens CD may be made most advantageously of fluor spar, which, from its low dispersive power, might form an achromatic com¬ bination with water. Although, in so far as we know, metallic’specula have Reflecting never been regularly fitted up as a reflecting solar micro- so'ar mi_ scope for use, yet every person familiar with, and in thecroscoPe' habit of using, specula and lenses, must have made the ex¬ periment of forming magnified images both in solar and ar¬ tificial light, with small concave specula. The perfection of these images cannot be doubted ; and it has often ap¬ peared to us surprising that the optician did not avail him¬ self of such a combination for a solar microscope. Neither the Newtonian nor the Amician form of the instrument of¬ fer facilities for this purpose. Sir David Brewster has there¬ fore proposed to employ his form of the reflecting micro¬ scope for a solar and oxyhydrogen instrument. Its facili¬ ties for this purpose are very great, and there can be little doubt that it will be practically successful, and will be as superior to other solar microscopes as the best reflect¬ ing compound microscope is to other compound micro¬ scopes. Dr Goring made an experiment with the Ami¬ cian microscope ; but he obviously considers it as not like¬ ly to succeed, remarking, that “ after all that could be done, a refractor would be sure to beat it hollow; there¬ fore I shall take my leave of the subject, as I cannot con¬ scientiously recommend such an instrument.”3 It is no wonder that this experiment failed, because Dr Goring seems to have used the whole of the Amician microscope, eye-glasses and all, as the magnifier in the solar micro¬ scope, and therefore it could not be considered as a reflect¬ ing solar microscope, being in fact as much ^refracting one. The construction to which we have above referred is shown Fisr. 35. 1 Treatise on New Philosophical Instruments, p. 410. . . , . . , . * See Treatise on New Philosophical Instruments, p. 401, for an account of the advantages of examining objects immersed m 3 Dr Goring states, that a friend of his had constructed a solar microscope with metals on the Amician principle, and without a body or eye-glass, which exhibited a variety of test objects in a highly satisfactory manner. 46 MICROSCOPE. Solar and jn the annexed figure, where AB is the illuminating lens, Oxyhydro- throwing the condensed rays of the sun upon a transparent gen Micro-object mn% The rays from this object falling upon the - SC0P,eS', - small speculum e, are reflected to the deep concave specu¬ lum cd, so placed, that the image is formed at MN on a screen at some distance behind it, distinct vision being ob- Fig. 36. ing solar microscope in the manner shown in the annexed figure, where CD is the perforated concave speculum, mn the object in one of its foci, and MN the magnified image in its other focus. The object mn, placed on a slider pass¬ ing through an opening in front of the speculum, is illu¬ minated as an opaque object by the lens AB, whose re¬ fracted rays are farther condensed by a lens placed in the aperture of the speculum. This form of the solar micro¬ scope is therefore singularly adapted for opaque objects ; and as the whole of the effect of the instrument is pro¬ duced by a single reflection from a single surface, it is the simplest optical instrument in existence. In order to throw light upon mn as a transparent object, the rays must passthrough it in-an opposite direction from the side MN, and this may be done by the very same method given by Mr Potter, and represented in fig. 29. The simplicity and practical value of this instrument will be immediately recognised by comparing it with the com¬ plex opaque box, which in all solar microscopes is a ne¬ cessary appendage for opaque objects. See Plate CCCLXI. fig. 28 and 29. Dr Goring s Solar Camera Microscope. Dr Goring, whose indefatigable genius has improved al¬ most all our popular instruments, has described in the Mi~ crographia a very complete solar microscope, which has the property of exhibiting the image on a horizontal curved Solar an surface, placed in a darkened camera, at which two or more Oxyhydr f persons can look at the same time. It is in reality a newgen Micr persons „ scodm. instrument, but can also be used like the common solar mi- ‘|P€& rained either by moving the object or the speculum. For opaque objects this form of the instrument is pecu¬ liarly adapted. The parallel rays of the sun falling upon the deep speculum hh, are condensed by it and thrown on the inner face of the object mn, of which a magnified image is formed, as before, at MN. A greater condensation of light may be obtained by using the lens AB, so that the speculum kh shall receive its convergent beam before the ra}rs reach their focus and complete their convergency. In this construction we have the disadvantage of two reflections, belonging also to the Amician form ; but this may be considered as compensated by the image being without the tube, and more under our command. Though this is true in the compound microscope, yet the advan¬ tage of having the object outside the tube is of less con¬ sequence in a solar microscope. To avoid therefore two reflections, and two mirrors with their relative adjustments, Sir David Brewster has proposed to construct the reflect- croscope in a darkened room.1 This instrument, with ail its parts, is shown in Plate CCCLXI. figs.30,31,32,and 33; fig. 30being a geometrical elevation of the instrument one-tenth of the real size, the various parts being represented as if formed of transparent matter. A strong framework A of wood rests upon four less, having a large hole in it, into which the instrument is "fixed with two screws F, F. The frame is large enough to protect the observer from the solar rays. A long plane mirror B is fixed to an arm C, which moves round a pin fixed to the side of the mirror frame, and also round a joint attached to a strong round w ire E, which slides back¬ wards and forwards in the tube D, having a spring within, and a pinching nut to fix it in its place. The inclination of the mirror is varied by pulling out or pushing in the mirror, which has also another motion produced by the action of the milled head G on a rack and pinion. A com¬ mon illuminating lens, five inches in diameter and one foot in focal length, is placed at H. Dr Goring recommends an achromatic lens- (which would be a very expensive ap¬ pendage), though he says that he has never used one. The main body of the microscope is conical, having a bayonet catch at L to receive the rest of the instrument, viz. the tube carrying the stage and rackwork. This tube II moves within the conical one by means of the milled head M and rack and pinion N. The end of this tube is closed, and an ordinary slider-holder O is fixed to it. On the inner side of the stage, near N, is fixed a condensing lens, about one and a half inch in diameter and two inches in focal length, which, by means of a sliding wire passed through a hole in the stage, can be moved from one side of’ the tube to the other, and also made to approach to or recede from the stage. A second tube PPP, slit open at the sides, is screwed into the tube in which the stage moves; and into this tube the optical part q is made to slide, the object- glass being placed at K. Dr Goring here remarks, that “ the focus may of course be roughly adjusted, by sliding the body backwards and forwards in its containing tube, before it is attached to the camera, fig. 31 ; but when this has been done, it must of course remain immoveable. I look upon it, ' he continues, •• as a principle in the solar microscope, that the magnifier or object-glass should not be moved, but always remain at a fixed distance from the illu¬ minator. Perhaps we do not distinctly understand the import of this passage ; but w e apprehend that the magni¬ fier or object-glass may be, nay, must be moved in any way that is necessary to produce distinct vision upon the screen, whatever be its distance ; and that the essential condition is, that the distance of the illuminator and the object shall be invariable, the object being, it possible, accu¬ rately situated in the locus, unless where a slight deviation is necessary to prevent its destruction by the concentrated heat of the solar rays. ^ The end ot the tube Q is now pushed into another piece of tube at R, fig. 31, which communicates w ith a conical tube of brass, “ having a rectangular prism, with its reflect¬ ing side silvered/or a plane metal adjusted at its head S, 1 Dr Goring calls this instrument a Solar Enciscove wIRIp c c , in a dark room in the common wav. The introduction of the inTa^e imn °f Ml'rc':c'Pe to the ,ame instrument when used into an enffiscopc. The word engiscope, however appropriate it mav he J camera becomes thus the reason for changing a microscope kind of solar microscope. appropriate it may be as a companion to the word telescope, is quite inapplicable to any See Edinburgh Journal of Science, No. xi. new series n 8V anH mu- tu • • » “ Dr Goring is surely mistaken in saving that the side’of’the’ prism I1I^minatlon of-^Bcroscopic Objects, for glass, and takes place at all greater angles of incidence the Imht inobw* 1 tor ai; .tota! rfflert'on commences at 41° 4^ ^ „f U* ccca, ^ shouM Www MICROSCOPE. 47 j lar and ( vhydro •ou j, Micro copes. CJi, hydro- g*< micro- scloe. so as to throw down the image to the bottom of the box •or camera, where it is to be received on paper (at T), or on a surface of plaster of Paris duly curved to suit its shape.” The camera WWXX is constructed with win¬ dows V, V, to permit two persons to view the picture on the table T. Two pieces of wood WW carved out to fill the slope of the upper part of the face, are placed as in the figure (one of them is shown separately in a plan at fig. 33). Dr Goring adds, that “ he has found it necessary to exclude the breath from entering the camera, as it dims the eye-glass of the engiscope, and thus spoils the image but he does not mention whether this is the object of the pieces of carved wood, or whether they are used to keep extraneous light from the eye,1 which, in so far as the figure indicates, does not appear to be the case. The sides U, U of the camera may be removed at pleasure, to allow the observer to draw the picture on the table, the light being excluded by some black drapery, while the hand passes through a suitable opening in it. Dr Goring recommends that the whole of the exterior (in¬ terior ?) of the conical brass tube and camera should be well blacked, or lined with black silk velvet.2 In applying this instrument to opaque objects, the opaque box, shown in fig. 32, is applied to the conical tube in fig. 26 by means of the bayonet catch at L. A plane mirror R, adjusted by the screw S, throws the light of the illuminator to the object O placed in the conjugate focus of the eye-glass K, by means of the milled nut M and screw T, which causes the stage and the object to approach to or recede from the lens K.3 The stage is formed by a piece of cork covered with black velvet. PP is the tube into which the body q of the microscope is inserted, as in fig. 26. This instrument may be converted into a common so¬ lar microscope by unscrewing and removing the tube PP, and placing a simple object-glass in an appropriate mount¬ ing at M. The whole apparatus is then removed from the frame A, and screwed to a window shutter in the usual way. On the Oxyhydrogen Microscope. The great popularity of the public exhibition made with this instrument has turned the attention of opticians and amateurs to its improvement. Mr Pritchard has written a long and interesting chapter of nearly fifty pages on the subject of solar and oxyhydrogen gas microscopes, in the Micrographia already referred to, and has given a most po¬ pular and minute account of all the details of the instru¬ ment. These details, to which we must refer our readers, do not belong to an article like the present; and we shall content ourselves with explaining what an oxyhydrogen microscope is, and how the optical apparatus of a solar microscope may be readily converted into that of an oxy¬ hydrogen one, and vice versa. An oxyhydrogen gas microscope differs from a solar one chiefly in this, that a brilliant light obtained by igniting a ball of lime the’size of a pea (hence called the pea or lime light, or more appropriately the Drummond light, from its inventor Mr Drummond) with oxyhydrogen gas, is substi¬ tuted in place of the solar rays. This enables us to en¬ joy the amusement of the solar microscope apparatus in all weathers and at all hours of the day. As the lime-ball light, however, is at our elbow, it sends Illumina- forth diverging rays ; whereas the rays of the sun are pa-tion of Mi¬ rabel. A very beautiful principle, already referred to in cros_coP'c our article Micrometer, enables us to give the simplest °bjects' direction for this purpose. Let AB be the illuminating lens of the common solar microscope, throwing the parallel rays e f of the sun upon the object mn, and let the whole Fig. 37. instrument be in perfect adjustment; then, without mov¬ ing or changing any part of it, we may convert it into an oxyhydrogen microscope, where the light diverges from the lime ball L, simply by placing in front of AB another lens CD, whose focal length is equal to the distance of the lime-ball light L from the lens AB. The oxyhydrogen microscope will then have its objects at mn illuminated in precisely the same way as they were by the sun’s rays. The two lenses CD, AB, should be in contact, the space being left to show the parallel rays ef. Now, as L is the focus of the lens CD, the converging rays ef will be paral¬ lel, and consequently will be refracted by AB, exactly as if they had been the rays of the sun. If the instrument had been made originally as an oxy¬ hydrogen microscope, with a large and deep lens at AB, which would be required to refract rays diverging from L to mn, then we might convert the instrument into a solar microscope by simply placing a concave lens in front of AB, whose focal distance is equal to the distance of L from AB. This concave lens will give such a divergency to the parallel rays of the sun that they will have their focus at mn. Our readers will find the most ample details respecting the gas apparatus, and the method of managing and using the instrument, in Mr Pritchard’s Essay in the Microgra¬ phia already cited. CHAP. V. OX THE ILLUMINATION OF MICROSCOPIC OB¬ JECTS. The methods of illuminating microscopic objects that On the have been long in use have been described in the preced- illumina- injr chapters. They consist in throwing- light upon the ob-tlon ot .D;1* ject, either by means of a mirror or a lens, or both combin-• ct^ ed ; but the nature of the light employed, the magnitude ' of the pencil, its condition with regard to parallelism, di¬ vergency or convergency, and the diameter of the pencil employed, or the direction in which it falls upon the object, have never been discussed as matters of science, and upon which the performance of the finest instrument essentially depends. light of silvered reflection, and the other part the double light of total reflection, which would never answer. M e would prefer a plane metallic speculum to the prism, even if sufficiently homogeneous not to affect the accuracy of the picture. 1 In using this, and all other optical instruments where perfect vision is either agreeable or essential, we would recommend the use of the Greenland snow spectacles, cut to suit the individual from a plaster of Paris cast of the eyes, nose, and brow. 2 Mr Potter found black velvet to be superior to any other blacking for the interior of his reflecting microscope. Edin. Journ. of Science, No. xi. p. 62, new series. 2 The illumination is here far too oblique. The mirror should be nearer P, and the screw MT should be made to move the ob¬ ject-glass K, in order that the focus of the illuminator may always fall on the object O. 48 MICROSCOPE. pic Illumina- In so far as we know, the most important of these to- t.ionofMi-pics was pressed upon the notice of the scientific reader croscopic by gir David Brewster, in the year 1820; and in order Objects. tbat tbe pr0gress of improvement in this essential branch of the art of making discoveries with the microscope may be understood, we shall quote his observations on the subject. New me- “ The art of illuminating microscopic objects is not of thod ofil- less importance than that of preparing them for observa- luminatingltion. No general rules can be given for adjusting the in- microsco- tensity Gf the illumination to the nature and character of objects. t|je 0bject t0 be examined; and it is only by a little prac¬ tice that this art can be acquired. In general, however, it will be found that very transparent objects require a less degree of light than those that are less so; and that ob¬ jects which reflect white light, or which throw it off from a number of lucid points, require a less degree of illumina¬ tion than those whose surfaces have a feeble reflective force. “ Most opticians have remarked, that microscopic objects are commonly seen better in candle-light than in day-light; a fact which is particularly apparent when very high mag¬ nifying powers are employed; and we have often found that very minute objects, which could scarcely be seen at all. in day-light, appeared with tolerable distinctness in candle-light. So far as we know, the cause of this has not been investigated ; and as it leads to general views re¬ specting the illumination of microscopic objects, we shall consider it with some attention. “ Let LL, fig. 38, be a single microscope placed before Fig. 38. . Delicate microscopical observations should not be Illumin!| when the fluid which lubricates the cornea of the ob- t‘on °f^ the eye at E, and let y’be a microscopic object placed in its anterior focus, and illuminated by two candles at A and B. As the rays Afa and Bfb cross at f, the focus of pa¬ rallel rays, and as the two shadows of the microscopic object will be formed at a and b, as it were, by rays di¬ verging from/ the images of these two shadows formed upon the retina will coincide and make only one image, so that the object/will appear perfectly distinct. If die object, however, is placed either within or without the focus / its shadows being formed, as it were, by rays di¬ verging from a point either within or without the prin¬ cipal focus / will not coincide on the retina, but appear to form two images, either overlapping each other, or completely separated. If, instead of two candles, A, B, we have 4, 5, or 6, we shall have 4, 5,-or 6 overlapping or separated images. Now, as it is impossible to place the different parts of a microscopic object exactly in the focus / and as every lens has different foci for the differently coloured rays, and even for homogeneous light, in conse¬ quence of its spherical aberration, it necessarily follows, that when microscopic objects are illuminated by light pro¬ ceeding from several points, the image upon the retina must consist of a number of images not accurately coinci¬ dent ; and hence it becomes of the greatest importance that the object be illuminated only from one point, and not from a large surface of light, such as the sky, which is equivalent to an infinite number of radiant points. “ The following rules may therefore be laid down respect- ing the illumination of microscopic objects, and the method of viewing them. “ 1. The eye should be protected from all extraneous light, and should not receive any of the light which pro- ceeds from the illuminating centre, excepting that portion of it which is transmitted through or reflected from the object. “ 2 made server’s eye happens to be in a viscid state, which is fre¬ quently the case. See Brande’s Journal, vol. ii. p. 127. • “3. The figure of the cornea will be least injured by the lubricating fluid, either by collecting over any part of the cornea, or moving over it, when the observer is lying on his back, or standing vertically. When he is looking down¬ wards, as into the compound vertical microscope, the fluid has a tendency to flow towards the pupil, and injure the distinctness of the vision. “ 4. If the microscopic object is longitudinal, like a fine hair, or consists of longitudinal stripes, the direction of the lines or stripes should be towards the observer’s body, in order that their form may be least injured by the descent of the lubricating fluid over the cornea. “ 5. The field of view should be contracted, so as to ex¬ clude every part of the object, excepting that which is un¬ der immediate examination. “ 6. The light which is employed for the purpose of illu¬ minating the object, should have as small a diameter as pos¬ sible. In the day time it should be a single hole in the window-shutter of a darkened room, and at night it should be an aperture placed before an argand lamp. “ 7. In all cases, and particularly when very high powers are requisite, the natural diameter of the light employed should be diminished, and its intensity increased by opti¬ cal contrivances. “ 8. When a strong light can be obtained, and indeed in almost every case, homogeneous light should be thrown upon the object. This may be done either by decomposing the light with a prism, or by transmitting it through a coloured glass, which has the property of admitting only homogeneous rays.” In the same article Sir David Brewster has described “ a new method of illuminating objects in the solar and the lu- cernal microscopes.” “ The great defects,” says he, “ which still attach to the solar and lucernal microscopes, arise from the imperfect method of illuminating the objects. The method suggested byfEpinus, and employed almost univer¬ sally by opticians, of reflecting the light concentrated by a lens upon the objects, by means of a plane mirror, is good enough so far as it goes ; but in consequence of the light arriving from one direction only, the surface of the illumi¬ nated (>bject is covered with deep shadows, and the inten- sity of illumination is by no means sufficient when the power of the instrument is considerable. We propose, therefore, that in the solar microscope the sun’s light should be re¬ flected by a very large mirror through four apertures, A, B, C, D (surrounding the tube T), each of which is furnished with an illuminating lens. The four cones, if condensed, are then re¬ ceived, before they reach their focus, each by an inclined mirror, which reflects them upon the ob¬ ject ; the distance of the lens from the mirror, added to the distance of the mirror from the object, being always less than the focal length of the illuminating lens. In the lu¬ cernal microscope it would be de¬ sirable to place an argand lamp opposite each of the apertures A, B, C, D. By these means the light would/*// upon the surface of the object in four differ¬ ent directions; a high degree of illumination would be ob- -f ,01 v ery ^tU k objects ; and by shutting up one or more of the four lenses, or parts of them, we shall be enabled to find the particular direction of the light which is best suited for developing the structure which it is the object of the observer o tscover. Although the focus of the illuminating rav» croscopi ObjecU j Fia 39. MICROSCOPE. Ulumina- should always fall upon the object, for the reasons already on of Mi- assigned, yet in the preceding method, applied to the solar in-oseopie mjcr0SC0pe, a deviation from this rule becomes necessary, joe s. ^ reasons : Because, if the focus of the illuminat¬ ing lens fall exactly upon the object, it might burn it, or destroy it by corrugation ; and, 'Zdly, In the ordinary illumi¬ nating lenses, the diameter of the focal spot, or image of the sun, is not sufficient to cover the whole object, or to give a sufficient luminous field around it. For these reasons it is recommended in the preceding extract to place the object a little way within the focus of the illuminator, that is, be¬ tween the illuminator and its focus. But if the object is such that it cannot be injured by the solar heat, or if the illuminator is sufficiently large to give a focal spot capable of filling the field of the microscope, then the object should be placed in the solar focus of the illuminator, ir Wol- After a lapse of nearly ten years, the subject of micro- ston’s scopic illumination was discussed by Dr Wollaston, in his ethod of paper on the microscopic doublet, published in the Phil, iuraina- 'prangi for 1829. This eminent philosopher, whose inge¬ nuity never failed in executing in the best manner what¬ ever he attempted, was then on his death-bed ; and this, among other papers, was published without that complete revision which its author would otherwise have given it. “ The state of my health,” says Dr Wollaston, “ in¬ duces me to commit to writing rather more hastily than I have been accustomed to do, some observations on micro¬ scopes ; and I trust that, in laying them before the Royal Society, they will meet with that indulgence which has been extended to all my former communications. “ In the illumination of microscopic objects, whatever light is collected and brought to the eye beyond that which is fully com- Fig. 40. manded by the object-glasses, tends rather to impede than to assist dis¬ tinct vision. “ My endeavour has been to col¬ lect as much of the admitted light as can be done by simple means, to a fo¬ cus in the same plane as the object to be examined. For this purpose I have used with success a plane mirror to direct the light, and a plano-con¬ vex lens to collect it; the plane side of the lens being towards the object to be illuminated.” These two principles of illumina¬ tion, the first of which is the same as the first and fifth of the rules already given, though not so fully develop¬ ed, and the second founded upon a mistaken principle, have been carried into effect by Dr Wollaston in the fol¬ lowing manner: “ T, U, B, E represents a tube about six inches long, and of such a diameter as to preclude any reflec¬ tion of false light from its sides ; and the better to insure this, the inside of the tube should be blackened. At the top of the tube, or within it at a small distance from the top, is placed either a plano-convex lens ET, or one properly curved, so as to have the east aberration, about |ths of an nch focus, having its plane side next the object to be viewed; and at the bottom is a circular perforation A, 49 of about y|ths of an inch diameter, for limiting the light Illumina- reflected from the plane mirror R, and which is to be bon of Mi- brought to a focus at a, giving a neat image of the per- croscopic foration A, at the distance of about y^ths of an inch from the lens ET, and in the same plane as the object which is to be examined. The length of the tube, and the distance of the convex lens from the perforation, may be somewhat varied. The length here given, six inches, being that which it was thought would be most convenient for the height of the eye above the table, the diameter of the image of the perforation A must not, excepting with lower powers than are here meant to be considered, exceed one twentieth of an inch. “ The intensity of illumination will depend upon the diameter of the illuminating lens and the proportion of the image to the perforation, and may be regulated ac¬ cording to the wish of the observer. # * * “ The lens ET, or the perforation A, should have an adjustment by which the distance between them may be varied, and the image of the perforation be thus brought up to the same plane as the object to be examined. * * “ For the perfect performance of this microscope, it is necessary that the axis of the lenses, and the centre of the perforation A, should be on the same right line. This may be known by the image of the perforation being illumi¬ nated throughout its whole extent, and having its whole circumference equally well defined. For illumination at night, a common hull's-eye lanthorn may he used with great advantage. * * % “ Supposing the plano-convex lens to be placed at its proper distance from the stage, the image of the perfora¬ tion may be readily brought into the same plane with the object, by fixing temporarily a small wire across the per¬ foration with a bit of wax, viewing any object placed upon a piece of glass upon the stage of the microscope, and va¬ rying the distance of the perforation from the lens by screwing its tube until the image of the ivire is seen dis¬ tinctly at the same time with the object upon the piece of glass.'’ In the preceding passages we have extracted every one of Dr Wollaston’s observations in reference to his method of illuminating microscopic objects, so that the reader will be enabled thoroughly to understand it. This method of illumination was highly commended by optical writers. Dr Goring1 considered it as most effec¬ tive, and enumerates it among the inventions which found¬ ed a new era in the history of the microscope ; and he elsewhere states, that “ there is no modification of day¬ light illumination superior to that invented by Dr Wollas¬ ton.”2 The marked difference between the methods of illumi¬ nation proposed by Dr Wollaston and Sir David Brewster, induced the latter to publish, in 1831, a paper “ On the Principle of Illumination of Microscopic Objects.”3 In this paper the mistake committed by Dr Wollaston is clear¬ ly pointed out. The rays which Dr Wollaston throws upon the object, in place of being rays actually converged to a focusy as they ought to be, are rays which diverge from a focus situated between the object and the lens. He makes the focal point of the circular margin of the perforation fall upon the object, without considering that the rays which pass through that perforation do not diverge from it, and therefore cannot be collected in the conjugate focus cor¬ responding to the perforation. In Dr Wollaston’s diagram (Phil. Trans. 1829, plate ii. fig. 1), the rays which are incident on the mirror R are actually drawn as parallel rays ; and it is quite clear that he meant them to be paral¬ lel rays issuing from the bull’s-eye lanthorn which he re- 1 Microscopic Illustrations, Exord. p. I, Lend. 1830. 2 Microscopic Cabinet, p. 181, Lond. 1832. 3 Edinburgh Journal of Science, new series, No. XI. p. 83. VOL. XV. G 50 MICROSCOPE. Illumina- commends. But if we suppose that a common flame is tion of Mi-yggcl^ the error is just of the same nature. It is a distinct CQ0bs.c°Plc image of the f ame that should be thrown upon the object; v '^( s_~ yand hence the perforation A should be placed close to the flame,—the source of light and the illuminated object form¬ ing the conjugate foci of the lens. After explaining this principle, Sir D. Brewster adds in the same paper:—“ I have no hesitation in saying, that the apparatus for illumi¬ nation requires to be as perfect as the apparatus for vision ; and on this account I would recommend that the illuminat¬ ing lens should be perfectly free of chromatic and spherical aberration, and that the greatest care be taken to exclude all extraneous light, both from the object and from the eye of the observer” At the meeting of the British Association at York in 1831, the preceding methods were communicated to Mr Potter, who was then engaged in inquiries with the re¬ flecting microscope, and who had used only the common method of illuminating his objects. The effect which he obtained by it is thus described.1 “ I am indebted to Dr Brewster for information on the necessity of having the focus of the illuminating lens for transparent objects to fall exactly upon the object, when great nicety of vision is required. Having adjusted my microscope carefully on this point (see our figure, p. 41, where the object is seen in the focus of the illuminating rays), I saw quite easily what are called the diagonal lines on the scale from the wing of the white-cabbage butterfly, which has been proposed as a difficult test object by Dr Goring; and it is such a one as those who have only seen the stronger longitudinal striae on scales from the wings of moths and butterflies have little idea of.” By the same means Mr Potter’s instru¬ ment “ showed him easily not only the stria; on the scales of the wung of the small house-moth, but also the diagonal lines.” Mr Potter afterwards applied his microscope, and the new method of illumination, to “a much more difficult object than those just referred to.” This object is the broad bluish band first noticed in the web of the spider, the Clubiona atrox? “ There can be no doubt,” says Mr Potter, “ that this blue band consists of lines produced by the spider, and woven into the delicate tissue. To demon¬ strate these fibres, however, is a work for an expert micro- scopist, provided with a first-rate instrument. So critical a defining power is required, at the same time with a large quantity of light, that I doubt much whether any compound refracting microscope, even the best achromatic, will ever show the construction of this web on a transparent object. When viewed in this manner through good common com¬ pound microscopes, the blue band can scarcely be per¬ ceived at all with a moderately high power. It is better seen as an opaque object by the light of the sun, and it was on this method that I discovered it, when highly illuminated and highly magnified, to be covered very regularly and closely with white spots. This was sufficient information that it was of an uniform texture ; but as there is always in such a light a strong display of irradiations and prisma¬ tic colours, it was impossible to trace the fibres. I had dis¬ covered something of the texture with small globules of glass, used after the manner prescribed by Leewenhoeck ; but with very high powers the distinct field of view is so small, that I dared hardly to pronounce decidedly upon the general structure ; and it ivas only after adjusting the illuminating lens of my microscope very carefully, that I saw ivith it the complete structure of a regularly woven net”* 41. 1 Edinburgh Journal of Science, new series, No. XI. p. 64. I It isJ0111ld 111 the ?re™es of,°rld £alIs’ and may be recognised by its irregular fleecy-looking web. a Mr Pritchard received from Mr Potter a specimen of this web; but though he detected the blue bands, yet as the specimen was p. e“) 0"e’ W“ PerCe‘Ve C0“’P 5tmcture of a res“larlj' "'orcn (Lht »/2ooo ojJS and IS 01 With °W‘^> - W this speculum altogether. After this strong testimony to the practical utility of Sir Illumins David Brewster’s method of illumination, and the unques- tion of M tionable optical principles on which it is founded, we were c‘F08c°pi> surprised to observe that Dr Goring and Mr Pritchard Jh]ect^ should, in the Microscopic Cabinet, published in 1832, still recommend and use a method so decidedly erroneous in theory, and founded on no optical principles whatever. Dr Goring has even contrived what he calls an impi'oved illuminator, which is just Dr Wollaston’s, with a stop in the focus of the lens. As the progress of discovery with the microscope must depend upon the scientific illumination of the objects un¬ der examination, we shall proceed to describe, in detail, the method of illumination used by Sir David Brewster. Let be the plane surface on which the object rests accurately perpendicular to the axis of the lens, lenses,1* or mirrors, which consti¬ tute the microscope. Let PQ.RST be a tube from one and a half to two inches long, and wholly lined with black velvet. This tube has an opening at ST, and must be so at¬ tached by an universal joint, or any analogous con¬ trivance, to the slider-hold-R er, that the axis FL of the tube can be inclined at any angle to the surface ?nn from 90°, its general position, to 60° or less, as circumstances may require. It should also have a circular motion about its axis, in order that the inclination may be made in any azimuth. A doublet AB, CD, of no aberration, and having a focal length of from half an inch to an inch, is then placed in the tube, with a rack and pinion, or any other adjustment, to bring its focus for parallel rays F, or its conjugate focus for di¬ verging rays, accurately to a point in the plane mn, and upon the object lying in that plane, for examination. A short way below it is placed a metallic speculum (not a silvered glass one), which receives parallel or diverging rays, entering the tube at ST, and reflects them upon the doublet ABCD. This speculum should be of pure virgin silver, notwithstanding its liability to tarnish, and should be wrought with the same care as the plane speculum of a New tonian telescope ; or it might be a rectangular prism of good homogeneous glass, acting by total reflection. This part of the illuminator forms part of the microscope.3 The other part of the illuminator, which is detached, is no less essential. It consists of the flame S, which should be as bright and small as will give the necessary quan¬ tity of light after condensation. As close to it as possi¬ ble is placed a stand for holding a screen, with different circular apertures, and a variable rectilineal aperture. If a stronger light is required than can be obtained from the plane S, its light must be condensed into a parallel beam SL, by another doublet of no aberration, A'B'C'D', the flame S being in its anterior focus. ihe illuminator, as now described, is adapted to homo¬ geneous light, either as obtained from a monochromatic lamp, or by means of coloured glasses, or from the pris¬ matic spectrum ; but if we employ common light, the doublets ABCD, A'B'C'D' must be achromatic. We have MICRO jillumina- mentioned above a variable rectilineal aperture. This is SCo. mi (rfMi-a most essential accompaniment for giving perfection to ijects -rj>scoPic the vision of lined objects. The aperture should be made to form every possible angle with a vertical line, and should be opened and shut by means of a screw, till as much light is introduced as is necessary to obtain a per¬ fect view of the object. The image of the slit, which is close to the flame, must be thrown upon mn, so as to be parallel with the lines of the object. When the objects are circular, circular apertures are preferable to any other. We have already stated that no light should reach the eye, either from the field of the microscope, or any other source. For this reason it would be desirable to have cir¬ cular and rectilineal apertures of different sizes, to be placed immediately beneath mn, so as to allow no part of the field to he seen, excepting that which is occupied by the object or part of it under examination. The above apparatus being provided, let us suppose that the observer is called to examine some structure very dif¬ ficult to be resolved, such as the blue band of the Clubiona ntrox, or the structure and nature of the lines on test ob¬ jects. We omit at present the consideration of the prepa¬ ration of the object and the eye of the observer, and also the nature of the light which he is to use, as these will be se¬ parately considered ; and confine ourselves to the use of the illuminator. The object is first placed on a piece of thin colourless parallel glass, or film of topaz or sulphate of lime, near its middle, and the microscope is directed to it, so that it can be seen distinctly in the ordinary way. Put the illuminator in its place, and set the proper aper¬ ture close to the small plane. Adjust the doublet ABCD by its screw or pinion till a distinct image of the aperture GH is seen in the field; and, by means of the apertures below mn, any strong or \mnecessary light may be still more completely excluded. If the structure is not ren¬ dered sufficiently distinct by this process, it will be proper to try the effects of oblique illumination, by inclining the axis FL of the illuminator to the plate mn, and observing carefully the effects which it produces in different azi¬ muths. If all these means are insufficient, we must have recourse to new auxiliaries,—to monochromatic light if the microscope is not achromatic, or to monochromatic il¬ lumination if it is achromatic ; and we must prepare both the eye and the object, the one for exhibiting and the other by viewing to the best advantage the structure which we are anxious to develope. These important topics we shall treat in their order, with as much brevity as possible. CHAP. V. ON THE MONOCHROMATIC ILLUMINATION OF MICROSCOPIC OBJECTS. If a simple and easily applied system of monochromatic illumination, that is, of illuminating objects with homoge¬ neous light, which a prism, and consequently a lens, is not capable of dispersing or refracting in different directions, could be contrived, we should neveragain hearof compound achromatic microscopes. We believe it will be admitted, that in Sir John Herschefs doublet of no aberration, the spherical aberration is more completely corrected than in any double or even triple achromatic object-glass. Hence , it follows, that in homogeneous light such a doublet would be a better microscope than the compound lens. But in the best system of achromatic compensation that can be executed, the secondary spectrum still remains without a remedy ; and hence the doublet of no aberration, in which SCOPE. 51 there can be no secondary colour in homogeneous light, Illumina- must be a superior instrument to the compound achroma- °f Mi- tic lens. Now, in telescopes it is impossible, except in cpsyopic viewing the sun’s disc,1 to work with homogeneous light ^, but in microscopes, where the quantity of light is in our power, it is perfectly practicable to make that quantity so great that all the yellow or red rays which it contains may give sufficient light for microscopical observations. This insulation of homogeneous light may be effected in two ways ; \st, by a monochromatic lamp, as proposed and con¬ structed by Sir David Brewster ; 2dly, by the absorption of coloured media; and, Sdly, by the prism. The monochromatic lamp is shown in the annexed fi- Monochro- gure, where AB is a matic lamp having its globe Fiff. 42. lamp. A filled with diluted alcohol, which de¬ scends gradually through the tube C, into a thin platina or metallic cup, in which it burns. A strong heat is kept up by a spirit lamp L enclosed in a dark lanthorn, and when the diluted alcohol is inflamed, it will burn with a fierce and powerful yellow flame. If the flame should not be perfect¬ ly yellow, or rather of a nankeen colour, ow¬ ing to an excess of al¬ cohol, a small proportion of salt thrown into the cup D will have the same effect as a farther dilution of the alco¬ hol. Sometimes a little blue light will be found mixed with the yellow, but this may be easily absorbed by a piece of yellow glass placed on any part of the microscope through which the rays pass. Although this light is feeble com¬ pared with that of white flames, yet, by using larger lenses for condensing it, it is quite easy to obtain a pencil suffi¬ ciently powerful for all microscopic observations.2 A stronger flame may be produced by using a gas Monochro- Fig. 43. lamp, or, what is still better, a portable gas one contain¬ ing compressed gas. This gas, when rushing out in a full stream, explodes when burned with atmospheric air, emitting much heat, and a faint bluish and reddish light. As the force of the issuing gas is sufficient to blow out the flame, a contrivance for sustaining it becomes neces¬ sary. The method which we contrived for this purpose is shown in the annexed figure, where PQ is the main body of the lamp, MN the principal burner, and A the screw which opens the main cock. A small gas tube abc, communicating with the main burner, terminates above the burner, and has a short tube de moveable up and down within it, but so matic gas lamp. 1 A solar telescope should never be an achromatic one, but should consist of a compound lens of no aberration, all the colours ot the spectrum being corrected by the dark glass. 2 Edinburgh Transactions, vol. ix. p. 435. 52 MICROSCOPE. Illumina- as to be gas light. This tube de> closed at d, communi- tion of Mi-cates wJth the hollow ring fg, in which four apertures are croseojne perforate(j so as to throw their jets of gas to the apex of cone whose base is^. When the gas is made to issue from the burner M, it rushes also into the tube abcdg, and issues in four small flames at the apertures in the ring fg; and the height of these flames is regulated by the stop¬ cock at b. The explosive mixture of air and gas which rushes up through the ring is sustained in combustion by these small flames, through which it passes. A broad col¬ lar, made of coarse cotton-wick, and thoroughly soaked in a saturated solution of common salt, is fixed on a ring h ; and when the bluish flame of the explosive mixture rises above h, it will be converted by the salted collar into a strong mass of homogeneous yellow light. A hollow cy¬ linder of sponge, with numerous projecting tufts, may be substituted for the cotton collar, or a collar of asbestos cloth might be used, and supplied from a capillary foun¬ tain containing a saturated solution of salt.1 When the few blue rays which sometimes mingle them¬ selves with this yellow light are absorbed, every part of the light will be found to have a definite refrangibility greater than any other artificial light that can be produ¬ ced. The minutest objects, and the smallest type, will appear perfectly distinct in this light when seen or read through the largest possible angle of the greatest dispersive prism, an irrefragable proof of the perfect homogeneity of the light. Absorp- 2. The second method of producing homogeneous light, tk>u- and by far the simplest and most easily applicable to mi¬ croscopes, is that of absorption ; and the best rays to leave unabsorbed or insulated are the red. It requires some experience and scientific knowledge of the action of differ¬ ent absorbing media to select those which will leave the narrowest andbrightestband of the rai space in thespectrum. We have now under our microscope (a grooved sphere of garnet executed by Mr Blackie2), two scales of a moth ly¬ ing in sulphuric acid, and covering each other. With solar light the spaces between the lines glitter with all the hues of the rainbow; but when a thickish plate of red mi¬ ca is combined with another plate of red glass, and placed beneath the object, all these colours instantly disappear, and a perfection of vision is obtained, which can be dis¬ turbed only by the very small portion of spherical aberra¬ tion which must exist in the sphere, and which an increas¬ ed depth of the groove would render almost insensible. Blue glasses, and green and yellow, as well as coloured fluids, may be successfully used in narrowing the range of ^ refrangibility of the red space. ^ rnetkod, or that of prismatic refraction, is . rdmon. perhaps the surest and the best method.of obtaining ho¬ mogeneous light with the smallest extent of refrangibility. A certain effect may be produced by small prisms ; but in order to have a perfect apparatus, the microscope should form part of the apparatus for examining the lines of the solar spectrum; that is, it should screw into the eye¬ piece of the telescope, in front of the object-glass of which is placed a fine large prism, for forming the spectrum within the telescope. By this method, which we have put to the test of experiment, microscopical observations can be carried on with an accuracy and satisfaction which nothing can ex¬ ceed. We enjoy the luxury of perfectly monochromatic vision, which the most perfect achromatic compensation cannot give; and while we have the spherical aberration corrected, we have no secondary colours, and none of the imperfections of vision which must arise in trans- Ulumina- mitting light through six or eight lenses of plate and flinttion of Mf glass. . 2°sc°Pic Although we hope that the scientific reader will admits ^^ that the preceding views are [demonstrably correct, yet Dr Goring has pronounced a most unfavourable opinion of the system of monochromatic illumination.3 We have al¬ ready endeavoured to convert him from this heresy, and hoped that we had succeeded ;4 but in the Micrographia, just published, he has devoted a whole chapter to the re¬ production and support of his former views.5 * We shall therefore again examine his objections in their order, as they obstruct the progress of improvement among those who justly admire Dr Goring’s ingenuity and knowledge in every thing which relates to the microscope. 1. Dr Goring’s first objection to monochromatic il¬ lumination is, that it is too weak, and must be about one seventh of the whole beam of light. This we are not dis¬ posed to dispute ; but Dr Goring is too well acquainted with the resources of optical science, to forget that this monochromatic seventh of a beam of light may be made seven times more intense than the whole beam. The ob¬ jection, however, does not apply to the solar spectrum, for one seventh of the sun’s light is too intense for any eye to bear. 2. The second objection of our author is, that the co¬ lours of the spectrum, vyhen separated by the prism, are actually separated into different colours when they are re¬ fracted in oblique pencils by a microscope. If this obser¬ vation is correct, then we must denounce the prism that produced such a spectrum as utterly useless. Dr Goring, however, conceives his observation and his prism to be good, and endeavours to explain the result by referring to Sir David Brewster’s analysis of the spectrum, in which it is shown that white light exists at every point of it; but this white light, which has been rendered visible by ab¬ sorption, cannot be decomposed by refraction of any kind, as it consists of red, yellow, and blue rays, of the same refrangibility. Such white light is the light that is wanted for the microscope ; and there can be little doubt that ab¬ sorptive media will yet be discovered to effect its insula¬ tion in sufficient quantity for practical purposes. 3. Another objection to monochromatic light is, that it will not show the real colours of microscopic bodies. I his is true ; but the object of the microscope is not to find out colours, but structures. A common glass lens, with common light, will let the observer have all that he wants of the colours of objects ; and when he has learned this, he will then gladly avail himself of coloured light for more important purposes. We can truly say, that though we have wrought with the microscope for thirty years, we do not at present recollect a single case where we required to know any thing of the precise colours of minute bodies. Notwithstanding this discussion, Dr Goring concludes his chapter with the following observation, in which we en¬ tirely concur. “ A monochromatic light, therefore, being once obtained in a sufficient state of intensity for practical purposes, bids fair to conduct us to the highest perfection of which aplanatic object-glasses and magnifiers are sus¬ ceptible.” It may be proper to add, that the best system of compound achromatic object-glasses now in use would be freed of all their secondary colours, by using monochro¬ matic light; and they may be also greatly improved by employing suitable coloured media to absorb what are called the outstanding rays in an achromatic combination. 1 Edinburgh Journal of Science, new series, No. I. p. 108. 2 t his sphere, which we have already mentioned, is made of the rmrp oduced on the same princi- presented itself in the curved lines on the scale of the pie as those of micrometers, why are they not as easily seen ? Podura plumbea, some idea of which may be obtained by No penetrating power or large angular aperture is requi- ! examining figs. 9 and 10 of Plate CCCLXII. site to bring out the lines on a micrometer, though divid- “ The motive that has induced me to offer the above ed nearly as finely as ordinary tests, to the extent perhaps remark is, that it may lead to a complete investigation of of 10,000 in an inch.” These observations are just and phi- the subject. What is here given is merely the crude idea losophical, and we would add only a single observation in that presented itself in the course of their examination as support of them, that Dr Wollaston made platina wires the proof-objects.”1 2 18,000th of an inch in diameter, and saw them distinctly ; Dr Goring has published, in the Journal of the Royal In- and we venture to say, that in no instrument whatever stitution, vol. xxii. and also in the Micrographia? many in- would such lines appear either dotted or ragged, teresting observations on lined objects, of which it is ne- Such was the state of this subject when these lined ob- cessary to give some account. In order to explain the jects were examined by Sir David Brewster, both in re¬ effects of aperture on lined objects, he has represented in ference to their action upon light when examined by the the seven circles shown in fig. 23, Plate CCCLXII. the naked eye, and when placed under the microscope as test different appearances of a portion of the scale of the Mor- objects. Having been occupied for several years in a se- pho menelaus, shown in fig. 1, produced by increasing the ries of analogous observations on the lines which apparent- aperture. He used a triple achromatic object-glass nine ly separate the component fibres of the crystalline lenses tenths of an inch focus, and half an inch in aperture, with of animals, he was familiar with the class of optical illu- a negative eye-piece of one fourth of an inch. sions which interfere with the accurate development of No. 1. shows the appearance of the scale when the such structures, aperture was one tenth of an inch, not a vestige of lines Upon exposing the finest lined objects to a bright light, being visible. and excluding as much as possible all other extraneous •jj : No. 2. Aperture three twentieths ; Dr Goring fancied he rays, he saw distinctly the fringes of colour produced by d saw indications of lines or scratches. interference ; and on measuring the angular distances of the ,oi No. 3. Aperture one fifth ; traces of irregular scratches first red fringe from the light, he found that the distance ol)' seen. of the lines, or rather the diameter of one black line and No. 4. Aperture three tenths ; nascent lines recognised half the bright space between the lines, varied from the by a practised eye, like an aggregation of dots, but inter- 10,000th to the 22,000th of an inch. Hence, if we take Irupted and broken. the black lines and their intervals to be equal, the dia- No.5. Aperture four tenths; the lines resolved, but not meter of each will vary from about the 13,000th to the fairly. They are very faint, and seem rugged, as if still 29,000th of an inch. composed of dots and points. Although these apparent lines give colours by inter- No. 6. Aperture five tenths ; the full aperture of the lens, ference, exactly like the analogous lines in the laminae The lines appear in their true character, as if drawn by a of the crystalline lens, yet neither of them are real lines, pen with some blue pigment on light-violet coloured paper, as decided upon by Dr Goring. With small apertures the No. 7. Same aperture. When the object is turned one lines in the crystalline lens appear dotty, interrupted, uneven, fourth round, the cross striae become perceptible. and ragged, and exhibit, in short, all the general pheno- Our limits will not permit us to give Dr Goring’s excel- mena of the lines on proof objects; but with a good mi- lent observations on the lines of the Pontia brassica, as croscope and a large aperture, we discover the true se- seen also with apertures of different sizes in a reflecting cret of all these appearances. They are not lines, but a microscope. With a well-figured metal, three tenths of succession of teeth arranged in lines; and from the great an inch focus, and an angle of 551° aperture, the lines and number of lines forming the sides of the teeth, they appear cross striae he found never to be resolved into dots and dark. Lach fibre, in short, has teeth on each side ot it, points, but to appear in what he supposes to be their proper and the teeth of one fibre lock into the spaces between character. “ The two sets of diagonal lines,” he remarks, the teeth of the adjacent fibres. When we trace these fibres “will be shown with a force and effect which will leave no towards the pole to which they converge, they become doubt of their existence in the mind of a candid obser- smaller and smaller, the teeth diminishing in the same ver; the various lines, the longitudinal, the cross striae, proportion, so that they become as difficult, and finally and the two sets of diagonals, being all observable succes- more difficult to resolve than the lines in the proof objects. sivelyby a slight change of illumination, though we can After a laborious examination of the lined tests, and Structure scarcely see tvvo of the systems well at the same instant.”3 the use of every optical resource which he could com-oj the fom Dr Goring elsewhere observes,4 that the reflecting mi- mand, Sir David Brewster has found that the mysterious croscope invariably shows the diagonal lines on the brassica lines on these test objects are only apparent lines, being as distinct as the eye sees the ruled lines on a copy-book; composed of a succession of interlocking teeth, by which that in some “ pet scales” one of the systems of oblique lines the fibres to which they are attached form that delicate may be seen by looking into the instrument directly, and film which composes the scale of a moth. W e now see the other by looking into it obliquely, without any altera- the source of all the perplexities which have beset this tion in the illumination f and that if one instrument shows class of observations. We understand why such lines are the lines dotty, broken, interrupted, or ragged, while not seen so distinctly as the real lines on micrometers, another shows them clearly made out as veritable lines or and the dots and the raggedness are all explained. In stripes drawn with a pen and ink, the latter is the best.6 the lenses of quadrupeds the teeth of the fibres are not Notwithstanding these repeated decisions of Dr Goring, round like those of fishes, but are often sharp pointed he seems, in an earlier part of his volume,7 to have had and extremely short, like a jagged line, or a line with 1 Microscopic Cabinet, p. 160, 161. 2 Hall, 159, &c. •* Micrographia, p. 163. 4 Micrographia, p. 130 and 144. 5 Ibid. p. 102, note. 6 Ibid. p. 104. 7 Micrographia, p. 44. 8 See Phil. Trans. 1830. 56 MICROSCOPE. Diagonal lines ex¬ plained. On Test points projecting from it. In like manner, the separation Objects, of the teeth is much more distinct in some of the lined objects than in others. See fig. 24, in which we have given a rude representation of the lines. With regard to the diagonal or oblique lines, which have been such a source of perplexity to microscopical observ¬ ers, we have little hesitation in pronouncing those which we have seen to be optical illusions from the accidental alignement of the sides of the teeth in different grooves, when similarly illuminated by oblique rays. When the scales are immersed in diluted sulphuric acid, we have never seen the diagonal lines. When the sulphuric acid is too strong, the scales curl up, and often in this state ex¬ hibit the lines very beautifully. We have observed dia¬ gonal lines singularly developed in the laminae of the crys¬ talline, and clearly arising from the interference of the rays acted upon by the lines on one side of the lamina, with the rays acted upon by the lines on the other side, and there¬ fore we have been the more confirmed in our opinion. As we have not had the advantage, however, of using any of the fine reflecting microscopes with which Dr Goring ob¬ served the oblique lines so distinctly brought out, it is still with considerable diffidence that we place our conclusions in opposition to so direct and distinct an observation, made by such skilful and experienced observers as he and Mr Pritchard.1 With the view of arriving at a just decision respecting the nature of the lines, Sir David Brewster endeavoured to ascertain the disposition of the colouring matter on the scales. Owing to the great brightness of the lines on the black scales, especially near their root, he was at first dis¬ posed to infer that, at least in these scales, the colouring matter was arranged along the black lines, the particles being more readily detained in their places by the edges of the teeth. He has found, however, that in other scales the colouring matter lies also along the bright lines ; and it is only when this colouring matter is removed, or its ef¬ fect masqued, by removing the refraction at its surface by immersion in a fluid, that the lines of proof objects are de¬ veloped with perfect distinctness. Sir David Brewster has made an attempt to count the numbei of scales and teeth in the wing of a brown moth, or m one superficial inch, the area of the two surfaces of each wing. He supposes, of course, all the scales to be the same in size and structure, and he finds that there are ?ca,es 158,400 leeth 19,800,000,000 or nineteen thousand eight hundred million. CHAP. VIII.—ON MICROSCOPIC OBJECTS. TIkrosco. In the preceding chapter we have already described pic objects, some of the most interesting objects for microscopical ob¬ servation. Every department of nature is full of obiects, 10m tne examination of which the most important disco¬ veries may be expected ; but though the zealous observer can never be at any loss for subjects of research, it is de¬ sirable to know what has been done by our predecessors, and what trams of inquiry are most likely to prove of -el nera interest. There are subjects of microscopic inquiry wnich are closely connected with the most interesting parts of physiology ; and even geology itself, conversant with the On Mi. grandest subjects of research, has recently been illustrated croscopk by the aid of the microscope. Objects, M. Ehrenberg, to whom we are indebted for so manyp^p" important discoveries respecting the organisation of infu- fusoria!” sorial animalcules, has lately made the most remarkable discovery of infusorial organic remains. These remains are the siliceous shells of animalcules belonging to the di¬ vision Bacillaria, and form strata of Tripoli, or poli-schiefer (polishing-slate), at Franzenbad, in Bohemia.2 M. Ehren¬ berg has still more recently discovered them in the semi¬ opal found along with the polishing-slate in the tertiary strata of Bilin, in the chalk flints, and even in the semi¬ opal or noble opal of the porphyritic rocks.3 The size of a single individual of these animals is about ^^th of a line, or ^jj-th of an inch. In the polishing-slate from Bilin, in which there appear to be no vacuities, a cubic lint contains, in round numbers, 23 millions of these animals, and a cubic inch contains 41,000 millions of them ! The weight of a cubic inch of the polishing-slate is 270 grains. There are, therefore, 187 millions of these ani¬ mals in a single grain, or the siliceous coat of one of these animals weighs the 187 millionth part of a grain ! In Plate CCCLXII. figs. 24 and 25, we have given re¬ presentations of these singular microscopic objects, as seen by Ehrenberg. Another example of the value of microscopical observa- Fibres of tions may be drawn from the discovery of the teeth of the teeth in fibres, which compose the crystalline lenses of almost all thecr.vst;>1- animals. The crystalline lens is composed of innumerableline Jens- fibres of nearly the same length, each of which tapers from its middle to its two extremities, where it comes to the sharpest point. The sides of each of these fibres are fur¬ nished with teeth like those of a watch-wheel, and the teeth of the one lock into those of the adjacent ones, as shown in fig. 28, Plate CCCLXII. When the power is small, or the microscope not good, or the laminae too thick and not nicely detached, each row of interlocking teeth appears as a dark line, sometimes as sharp as a black line drawn upon paper with a pen. Sometimes the lines appear rough and ragged, and as the fibres become less and less in approaching the poles, the black lines are as difficult to resolve into teeth as the lines on test-objects already described. The following measures, taken by Sir David Brewster, will shoiv what a wonderful structure in the eye has been thus disclosed to us by the microscope, ihe calculations refer to the lens*of a cod, four tenths of an inch in diameter. Number of fibres in each lamina or spherical coat....2,500 Number of teeth in each fibre 12,500 Number of teeth in each spherical coat 31,250,000 Number of fibres in the whole lens 5,000,000 Number of teeth in the lens 62,500,000,000 or the lens of a cod contains five millions of fibres, and sixty-two thousand five hundred millions of teeth; and if we reckon the curved end of the tooth as one surface, each tooth will have six surfaces,4 which come into contact with the corresponding surfaces of the adjacent tooth, so that the number of touching surfaces will be three hundred and seventy-five thousand millions f “ and yet this little sphere of tender jelly is as transparent as a drop of the purest water, and allows a beam of light to pass across these al- Mr Pritchard informs us that the diagonal lines or cross siW^JT^ ^ m " ~ hmniacx, and in the blue scales from theFWu, Pari,, where thev^ Jv , the scales from the of the Euplcta -00 times.” In speaking of the ordinary lines, Mr Pritchard rpmnrK ^ easily devel°ped under a power of from 100 to appear detached like short hairs or spines covering the delicate tissu^f i-f . e,e 0.r “ markings,” with his best instruments, portions of the lines which hare escaped the pressure of those of the sm-™ l(\.scae' 1 1?tter appearance is correct, the prominent the lines. This opinion of the structure of the lines! publiKd i^ SCafle® .be^ “ « P^ne above the other portions of Dr Goring decides that they are real lines. See List of 2000 MkroscoDlr "ot rel)eat^d 111 the Micrographia, published in 1837, where - PoggendorfPs Annalen der Physik, 1836, No. V. p. 225 ^ 0hlecU' ?• J°- . Lond. 1835. Ihis includes the concave surface between two adjacent teeth. - P* . „ p. 464. Philosophical Transactions, 1833, p. 329. MICROSCOPE. 57 j sems. icrosco- most innumerable joints without obstructing or reflecting H | oc Ob- a single ray!” ^ jects. There is another class of objects of extreme interest, which Mr Pritchard has omitted to notice, and the de- • ■ cavTfles vel°Pment which called forth all the resources of opti¬ cal knowledge and practical experience with the micro¬ scope. These objects are the microscopic cavities in mine¬ rals, containing two fluids unknown to the chemist, groups of crystals, floating balls, and exhibiting actual chemical operations going on in these minute laboratories when ex¬ posed to changes of temperature. These various pheno¬ mena have been described and represented in drawings, in two papers by Sir David Brewster, published in the Trans¬ actions of the Royal Society of Edinburgh. In some of the precious stones, particularly in diamond, garnet, &c. these cavities are perfect spheres ; but, owing to the great refrac¬ tive power of the gem, they appear completely black and opaque, though the microscope descries a small spot of light in their centre, which is the pencil of light which they re¬ fract. These spherical cavities, and this central spot, are the finest objects for examining the aberration of lenses and specula, and are infinitely preferable to the reflected patches of light from small spherules of quicksilver. Dr Goring has observed spherical cavities or air-bubbles in fluids, and, with his usual ingenuity, recognised their uti¬ lity for indicating the effects of aberration. Those which we have used in the gems are, however, permanent instru¬ ments of much greater utility, not only from our being able to use the same bright spof with all instruments and on all occasions, but from the dark ring round the bright spot being incomparably greater in the gems than in fluids.1 Representations of some of the cavities in fluids are given in Plate CCCLXII. fig. 29, 30, 31. Fig. 29 shows the cavities containing the two new fluids, which will not mix, though in the same cavity. The little circle is the bubble either of gas or of vacuity. The fluid round it is a highly evaporable fluid, and the fluid in the angles and ends of long cavities is a thick and unevaporable fluid, which in¬ durates when exposed to the air. Figs. 29 and 30 are beau¬ tifully formed cavities in topaz. Our limits will not permit us to pursue this subject far¬ ther, and we shall conclude the article with a very brief selection of microscopic objects from Mr Pritchard’s ad¬ mirable little pamphlet, entitled a List of 2000 Microscopic Objects. 1. Insects,—Eggs, wings, tongues, antennm, and scales of. Eyes of, Agrion, 12,000 eyes; Bombyx Mer, 6236 eyes; Phalama cossus, 11,300; Sca- rabaeus, 3180; Hawk-moth, 20,000; Li- bellula, 12,544; Melalontha, 8820; Mor- della, 25,088 ; Papilio, 17,000. 2. Hairs of Animals. Hair of an infant, Ornitboryn- chus, mouse, bat, bee, Acilius canaliculatus, Melecta punctatus, Siberian fox, spider, wing of Tipalis, stag- beetle, white cat, dormouse, dermestes, caterpillar, badger, ant-eater, civet cat. 3. Scales of Insects. Podura plumbea, Pontia brassica, Pierisbrassica, Parnassus Apollo, Atlas moth, diamond- beetle, Euplcea limniace, house-moth, Lepisma sac- charina, 10-plumed moth, 20-plumed moth, Morpho Menelaus, Papilio Apollo, Papilio Paris, Urania lei- lus, privet moth. 4. Circulation in Plants, or Cyclosis. Nitella hyalina* Microsco- Nitella translucens, Chara vulgaris, Caulinia frigalis, pic Ob- Hydrocharis or frog-bit in the stipulae of the leaves jects* and the ends of the roots, Tradescantia virginica or spiderwort in the filaments around the stamina, Sene- cio vulgaris or groundsel in the hairs surrounding the stalks and flowers. 5. Circulation in Animals. In the arachnoida or spi¬ der tribe at the joints of the legs, Peria viridis and Semblis bilineata on the antennae and wings when they have just emerged from the chrysalis, larva of the Ephemera, larvd of Hydrophilus, small Dysticus, Agrion puella, Libellula, round Lynceus, fresh-water shrimp, water-hog (Oniscus), Ligia, water-flea (Daphnia pulex). (See Pritchard’s Microscopic Illus¬ trations, and Microscopic Cabinet.) 6. Circulation in Zoophytes. Mr Lister has discover¬ ed a circulation resembling that in plants in some of the polypiferous zoophytes, as the Tabularia indivisa, Sertulariae, Campanulariae, Plumulariae, &c. 7. Crystals. For an account of various interesting mi¬ croscopic phenomena observed by H. F. Talbot, Esq. of Lacock Abbey, we must refer the reader to a se¬ ries of interesting papers in the recent numbers of the London and Edinburgh Philosophical Magazine. The oxalate of chromium and potash dissolved in wa¬ ter and rapidly crystallised is a fine object. In po¬ larised light the most splendid object is the Faro Apophyllite when the prisms are complete, as repre¬ sented by Sir D. Brewster in a coloured drawing in the Edinburgh Transactions, vol. ix. p. 317, plate xxi. fig. 1. Size. 8. Animalcules. Monas Termo, 18,000th of an inch. Monas atom us, 4000th of an inch. Monas volvox, 3456th to 1728th of an inch. Volvox globator, found in stagnant water, 30th of an inch. Vibrio, bipunctatus, 200th of an inch. Vibrio spirillum, like a screw, 2000th to 1000th of an inch. Vibrio glutinis.2 Kolpoda cucullus, 28th of an inch. Cercaria podura. Cercaria viridis. Cercaria hirta. Leucophrys fluida, 400th of an inch. Trichoda vulgaris, 1200th to 240th of an inch. Trichoda longicauda. Vorticella polymorpha. Vorticella convallaria. Vorticella senta, 100th of an inch. Vorticella rotatoria.3 The reader will find beautiful drawings and full descrip¬ tions of these and many other animalcules in Mr Prit¬ chard’s interesting work entitled The Natural History of Animalcules, London, 1834. In the Microscopical Illus¬ trations of Mr Pritchard and Dr Goring, and in the Mi¬ croscopic Cabinet by the same authors, he will find every thing that he desires respecting microscopic objects. (n. n. n.) 1 The ratio between the diameter of the dark sphere and of the small luminous spot gives a measure of the refractive power of the solid or fluid. 2 Figured by Dr Goring in the Microscopic Cabinet. 3 The Rotifer vulgaris. See Microscopic Cabinet, chap. vi. VOL. XV. H 58 MID Midas MIDAS, in fabulous history, a famous king of Phrygia. .11 Bacchus, having been received by him with great magni- Middle ficence> offered, out of gratitude, to grant him whatever s^ou^ as^* Midas desired that every thing which he touched should be changed into gold. Bacchus consented ; and Midas, with extreme pleasure, found everywhere the effects of his touch. But he had soon reason to repent of his folly; for, when he wanted to eat and to drink, the ali¬ ments no sooner entered his mouth than they were chan¬ ged into gold. This obliged him to have recourse to Bacchus again, to beseech him to restore him to his for¬ mer state ; upon which the god ordered him to bathe in the river Pactolus, which thenceforward had sands of gold. Some time afterwards, being chosen judge between Pan and Apollo, he gave another instance of his folly and bad taste, in preferring Pan’s music to Apollo’s; upon which the latter, being enraged, provided him with a pair of ass’s ears. This Midas attempted to conceal from the know¬ ledge of his subjects; but one of his servants having seen the length of his ears, and being unable to keep the secret, yet afraid to reveal it from apprehension of the king’s re¬ sentment, opened a hole in the earth, and after he had whispered there that Midas had the ears of an ass, he co¬ vered the place as before, as if he had buried his words in the ground. On that place, however, as the poets mention, there grew a number of reeds, which, when agitated by the wind, uttered the same sound which had been buried beneath, and published to the world that Midas had the ears of an ass. Some explain the fable of the ears of Mi¬ das, by the supposition that he kept a number of inform¬ ers and spies, who were continually employed in gather¬ ing and retailing every seditious word which might drop from the mouthsof his subjects. Midas, according to Strabo, died of drinking bull’s blood hot, a potion which he is said to have taken in order to free himself from the numerous evil dreams which continually tormented him. According to some, this personage was son of Cybele, and built a town, which he called Ancyrce. MIDDELBURG, a circle of the province of Zealand, in the Netherlands, consisting of the island of that name, which is separated by the Eloe water from South Beve- land ; it is divided into six cantons, and contains 30,000 in¬ habitants. The capital is the city of the same name, near¬ ly in the centre of the island; it was once fortified, but is now with its walls converted into pleasing promenades. It is well built, and has twelve churches, one of which, the New Church, has a lofty tower, serving as a useful sea¬ mark. In 1830 it contained 14,700 inhabitants, viz. 6469 males and 8231 females. The city has manufactories of linen and woollen cloth, and is celebrated for its chocolate. It is connected by water with the West Scheldt, but its shipping operations have been on the decline, and but slightly revived since the return of peace. This city was the birth-place of the celebrated jurist Bynkershoeck. Long. 3. 32. 10. E. Lat. 51. 30. 6. N. MIDDELTON, a market-town of the county of Lan¬ caster, in the hundred of Salford, 190 miles from London and seven from Manchester, on the road to Rochdale. The inhabitants are chiefly employed in the different branches of the cotton manufacture. It is a parish of itself, and has a market, which is held on Saturday. The inhabitants of the town were, in 1801,3265 ; in 1811, 4422; in 1821, 5809 ; and in 1831, 6903 ; but at the last census the whole parish, which comprises also seven other chapelries or townships, contained 14,370 inhabitants. MID-HEAVEN, the culminating point of the ecliptic, or that in which it cuts the meridian. MIDDLE Island lies off the south coast of New Hol¬ land, in longitude 123. 10. east, and latitude 34. 7. south. There is another small island of this name in the strait between the islands of Billiton and Banca, which it divides M I D into two, namely, on the west, Caspar’s Strait, and on the Middle. j[jd east, Clement’s Strait. It is also the name of a small island burg ^ in the narrowest part of the Straits ot Sunda, opposite | to Hog’s Point, in Sumatra, called also Thwart the Way. v ^ Long. 105. 43. E. Lat. 5. 55. S. MIDDLEBURG, one of the Friendly Islands, in the South Sea. See Polynesia. MIDDLEBURGH, a small island, about ten miles in circumference, situated off' the north-western extremity of Ceylon. MIDDLEHAM, a market-town of the north riding of the county of York, in the wapentake of Hang West, 232 miles from London. It has the remains of an ancient royal castle, where King Richard III. was born, and Ed¬ ward IV. died. The church is large, and was formerly collegiate. The inhabitants amounted in 1801 to 728, in 1811 to 714, in 1821 to 880, and in 1831 to 914. A mar¬ ket is held here on Monday. MIDDLESEX, an English county, and, though in ex¬ tent one of the least, yet, as containing within it the me¬ tropolis of the British empire, with its numerous popula¬ tion, its extensive wealth, and its repositories of art and science, and being the theatre of the most interesting his¬ torical and political transactions, naturally attracts to it the attention of all who are connected with the united kingdoms. This county is bounded on the north by Hertfordshire; on the west by Buckinghamshire ; on the south by Surrey, and at the eastern point by a small portion of Kent; and on the east by Essex. Its general figure is quadrangular, but rendered very irregular by the course of the rivers Thames, Coin, and Lea, which bound it on three sides, and by a considerable projection into Hertfordshire on the north. Its greatest length is twenty-three and its greatest breadth seventeen miles. Its square contents are estimated at 285 miles, or 182,400 statute acres. According to the census of 1831, the whole number of inhabitants was 1,358,330, of whom 631,410 were males and 726,920 were females. These composed 314,039 fa¬ milies, of whom 9882 were chiefly occupied in agriculture ; 173,822 were chiefly occupied in trade, manufactures, and handicraft; and the remainder, 130,335, were not compre¬ hended in either of these two classes. A more minute classification is as follows :— Males under twenty years of age 358,521 Occupiers of land, employing labourers 1,050 Occupiers of land, not employing labourers 490 Labourers employed in agriculture 11,376 Employed in manufacture, or in making manufac¬ turing machinery 11,064 Employed in retail trade, or in handicraft, as mas¬ ters or workmen... 163,220 Capitalists, bankers, professional and other educat¬ ed men 49,457 Labourers employed in labour other than agricul¬ tural 79,735 Other males, twenty years of age, not servants.... 22,549 Male servants, twenty years of age... 19,578 Male servants under twenty years of age 5,923 Female servants 87,554 The baptisms of 1830 were, males 167,444, of females 165,683 ; the burials in the same were, of males 148,390, and of females 141,529. The marriages were 13,295. Ihe illegitimate children born in the same year were, of males 526, of females 380. Ihe proportion of burials to the whole population, which in 1801 was one in thirty-one, was in 1830 one in forty- tuo. Ihe amount expended for the relief of the poor ^varied but little during the ten years from 1820 to 1830. In the first of these years it amounted to L.625,665, and in the last to L.681,567. MIDDLESEX. Iddlesex. The annual value of the real property of the county, as assessed in the year 1815, was L.5,595.337. The increase of the population is shown by the several decennial enu¬ merations to have been as follows, viz. in 1801, 818,129; in 1811, 953,276, being an increase of seventeen per cent.; in 1821, 1,144,531, being an increase of twenty per cent.; and in 1831, 1,358,200, being an increase of nineteen per cent. The whole increase in the thirty years has been 59 sixty-five per cent. If the same rate of increase should Middlesex, continue till 1841, which there seems no reason to doubt, the county will then have doubled its inhabitants in about the period of forty or forty-one years. The county is divided into six hundreds, and the three cities of London within the,, walls, London without the walls, and Westminster. The most populous of the hun¬ dreds, that of Ossulstone, is formed into four divisions. Cities or Hundreds. Families. Males. Females. Total. Edmonton hundred Elthorne ditto Gore ditto Isleworth ditto Ossulstone. Finsbury division Holborn ditto Kensington ditto Tower ditto Spelthorne hundred London within the walls... London without the walls Westminster city Militia under training 4,801 4,224 2,049 2,871 34,569 83,467 20,179 84,282 3,175 11,719 15,884 46,004 314,039 12,969 9,998 5,697 6,515 70,641 154,743 39,217 168,146 7,325 27,327 33,413 95,219 200 631,410 13,961 10,093 5,618 7,053 80,768 191,512 48,744 191,718 7,887 28,451 34,492 106,623 726,920 26,930 20,091 11,315 13,568 151,409 346,255 87,961 359,864 15,212 55,778 67,905 201,842 200 1,358,330 The places of most note in this county, besides the cities of London and Westminster, aretowms which have sprung up from their contiguity or vicinity to the metropolis, and which, in many instances, though forming only suburbs, are to all appearance, and to all practical purposes, parts of the great city. In giving the population, those places in con¬ tact with London must be first noticed. Mary-le-bone parish 122,206 Pancras, with its hamlets 103.548 Paddington 14,540 Bethnal Green 62,018 Chelsea 32,371 Kensington, with its hamlets 20,902 Shad well 9,544 Stepney parish, including Poplar, Black- wall, Limehouse, Mile-end, Old and NewTown, and Ratcliffe 67,872 Bromley 4,846 The other populous places not in contact with the me¬ tropolis are, Hackney, with its hamlets 31,047 Islington 37,316 Fulham, with Hammersmith 17,539 Hampsteed 8,588 Ealing, including Old Brentford 7,783 Tottenham 6,937 Enfield 8,812 Cheswick 4,994 Twickenham 4,571 Hornsey, with part of Highgate 4,857 Hampton, including the court and Hamp¬ ton Wick 3,992 Hendon 3,110 Uxbridge, with Hillingdon 6,885 Heston, with a part of Hounslow 3,407 Stoke-Newington 3,480 Staines 2,486 Edmonton 8,192 Harrow a 3,861 Isleworth 5,590 The face of this county may be described as a gently sloping tract rising from the banks of the Thames, its southern boundary, to the hills on the north, none of which rises more than 350 feet above the level of that river, and few attain even that height. In receding from the banks of the stream, the surface is gently undulated, with suffi¬ cient slope to secure the necessary drainage. The pros¬ pects in the southern division of the county, from the level nature of its surface, are not distinguished by extent or variety; and the eye is only relieved from the fatigue of uniformity, by the numerous buildings, plantations, gar¬ dens, and the rich verdure of productive grass fields. Even in the more hilly parts of the county the prospects are far less impressive than those upon the opposite banks of the Thames, or those which are to be seen upon the borders of that river before it enters Middlesex. The best prospects of a rural kind are from the range of hills stretching from Pinner, Stanmore, Elstree, Totteridge, and Barnet, to the forest scenery of Enfield Chace. The Hill of Harrow, a projection from this ridge, is one of the highest points ; and the whole of the richly-cultivated valley of Middlesex is comprehended in the view from it. The original soil on the southern side of the county is of a most sterile kind of gravel; but the vast quantities of manure which have been furnished to it from the exten¬ sive cities in its vicinity, have been so spread over the sur¬ face, that a most luxuriantly-productive soil of garden mould has been created ; and from the same cause it is re¬ newed as rapidly as it becomes exhausted by the crops grown upon it. The northern part of the county generally consists of a soil of clayey loam, which, though rather dif¬ ficult to plough, is, when properly pulverised, very well adapted for the cultivation of wheat, and has been long celebrated for the excellent quality of that grain which is produced upon it. The table of Queen Elizabeth was re¬ gularly furnished with white bread from the wheat grown in the vicinity of Hounslow. In several parts of the county the loamy clay, converted by the addition of cinders, tech¬ nically called breeze, into bricks, becomes the most profit¬ able application of the soil. This is peculiarly the case where such soil is found in the immediate vicinity of the metropolis, or upon the banks of the rivers or canals that communicate with it. “ Round the one-mile stone on the Kingsland Road,” says Mr Middleton, “ the surface is f)0 MIDDLESEX. Middlesex, lowered from four to ten feet, by the earth having been dug up and manufactured into bricks, over an extent ot more than 1000 acres ; and it has been levelled, ploughed up, and laid down to grass. It is sufficiently dry, and by the help of town manure is restored again to excellent grass land; though it had previously yielded to the com¬ munity, through the medium of the brickmakers, upwards of L.4000 per acre on an average of the whole level; but there are a few acres of choice marl earth, which have produced through the same medium L.20,000 per acre.” The greater portion of the land in the county is appro¬ priated to the cultivation of grass, which is converted into hay for the supply of the numerous horses kept in the me¬ tropolis. These upland meadows have been gradually ex¬ tending as the metropolis has increased, so that at present not more than 20,000 acres are under cultivation by the plough. The meadows, however, even those which have been longest laid down in herbage, discover the marks of their having been formerly ploughed. The great consump¬ tion of hay in the London markets has induced the most skill to be applied to that particular branch of rural econo¬ mics which, under the term haymaking, is usually deemed the simplest of all agricultural operations, but which is here managed in so superior a way as to bring to the stack hay of a quality far better than is preserved in the more dis¬ tant counties. The corn grown in this county is inconsi¬ derable. Upon an average of years, about 10,000 acres are sown with wheat, about 4000 with barley, about 3000 with beans, and about 2000 with pease ; some rye is grown, but principally for green food, and scarcely any oats are culti¬ vated. There are fewer sheep and cows kept in Middle¬ sex than in any other county; but of the latter some thou¬ sands are maintained solely for the purpose of supplying milk for the consumption of the metropolis. Many pigs are fattened from the offal produced in the vast breweries and malt distilleries of London and its vicinity. The horticulture of Middlesex, although it does not ex¬ tend over quite so great a surface as its arable culture, produces a far greater annual return. Exclusively of the gardens attached to the houses of the nobility and gentry, the extent of land appropriated to the growth of fruit is reckoned by Mr Middleton to be 3000 acres, of that de¬ voted to culinary vegetables 10,000, and of that used as nursery grounds and plantations 1500. The same writer estimated the annual value of the productions of horticul¬ ture at somewhat more than one million sterling. The gardeners of Middlesex practise a wonderful economy in the raising of crops. The fruit gardeners have what they call an upper and an under crop growing on the same ground at the same time. First, the ground is stocked with apples, pears, cherries, plums, walnuts, &c. like a com¬ plete orchard, and called the upper crop. It is secondly fully planted with raspberries, gooseberries, currants, strawberries, and all such fruits, shrubs, and herbs as are known to sustain the shade and drippings from the trees above them without the least injury ; this they term the under crop. Some of these gardens have walls which are completely clothed with fruit-trees, such as peaches, nec¬ tarines, apricots, plums, and various others, all adapted to the aspect of the wall. In order to increase the quantity of warmth and shelter in autumn, they raise earthen banks of about three feet in height, laid to a slope of forty-five degrees to the sun. On these slopes they plant endive in the month of September; and near the bottoms of them they drill pease from October to Christmas; by this means the endive is preserved from rotting, and, as well as the pease, reaches maturity at an early period. The common routine ot the best kitchen gardeners is the following: Soon after Christmas, when the weather is open, they be¬ gin by sowing the borders, and then the quarters, with ra¬ dishes, spinach, onions, and all the other seed crops. As soon afterwards as the season will permit, which is gene-Middlesei ^ rally in February, the same ground is planted with cauli- flowers from the frames, as thick as if no other crop had then possession of the ground. The radishes, &c. are soon sent to market; and when the cauliflowers are so far ad¬ vanced as to be earthed up, sugar-loaf cabbages are plant¬ ed from the before-mentioned seed crops ; and daily as these crops are sent to market, the same ground is cropped with celery for winter use. The foregoing rotation is the common practice, but there are many deviations, according to the judgment of the cultivators, the state of the wea¬ ther, and the demands of the market. Such a system, how¬ ever, can be pursued only in the vicinity of great cities, the abundant manure of which gives the means of raising vege¬ table productions in defiance of the inclemency of our north¬ ern winters. A species of cultivation of a nondescript kind, partaking of the nature of agriculture and horticulture, is extensively pursued in this county. The ground is plough¬ ed in January and February, and cropped with early pease, which are gathered green in June. The land is then sowed with turnips, which are sold in autumn, when the kind of cabbages called collards are planted, and these three crops are annually raised from the same soil. Manufactures of every kind may be ascribed to this coun¬ ty, in so far as the best workmen of every description are employed in London for combining, fitting, and finishing all the commodities requisite for the consumption of the metropolis, which is at the same time the seat of govern¬ ment, the temporary residence of the wealthiest subjects of Great Britain, and the greatest sea-port of the empire, but workmen of this kind, forming more than 400 classes, cannot be here so appropriately described as under the ar¬ ticle London, to which the reader is referred. In the more appropriate application of the word manu¬ facture, none of importance can be attributed to Middle¬ sex, other than that of silk, which subsists in Spittalfields, and which employs upwards of 5000 males above twenty years of age. In St Mary’s parish, Whitechapel, 440 men of that age are employed in sugar-refining. Ship-building, and the various auxiliaries of that art, such as rope-making, sail-making, block-making, anchor-making, and the fabri¬ cation of copper sheathing and bolts for ships, with nu¬ merous smaller articles, employ a great number of persons. Ihere are manufactories of chemical preparations at Bow, mustard-mills at Staines, copper-works at Harefield, and mills for throwing silk in many places. I he rivers of Middlesex are, the Thames, the Coin, the Brent, and the Lea. The former of these is navigable for barges, along almost its whole extent, to Leachlade in Glou¬ cestershire, within a few miles of its source. The tide is felt as high as Teddington, above which the navigation is performed by penning the \yater at various locks till a suf¬ ficient body is collected, which, by making w hat is locally called & flash, permits the passage of the barges over the obstructions and shoals, which, a few hours after, become again impassable. The picturesque beauties on the banks of this stream are too well known to need a description in this place. The Coin is not navigable. It enters Middle¬ sex from Hertfordshire at the north-western extremity of the county, and falls into the Thames in various channels at considerable distances from each other, having in its course been applied to the working of numerous mills for paper, corn, and other purposes. The Brent, also not navi¬ gable, enters the county from Hertfordshire, and joins the Ihames at Brentford, i'he Lea is navigable for barges along its whole course through this county. It enters from Hertfordshire, forms the eastern boundary of Middlesex, and joins the ihames at Limehouse, below London. Be¬ sides these natural streams, the artificial one called the ew Iliver belongs to this county. The artificial channel m which this stream flows towards London has a very de- M I D llddlesex. vious course, in order to keep the waters at a due level. IT—' It is ultimately received into a spacious reservoir near Islington, whence, by means of pipes, its water is conveyed through the streets of the metropolis to the houses of indi¬ viduals. Amongst the public works of this county, the canals de¬ serve notice. These are, the Grand Junction, the Padding¬ ton, and the Regent’s Canal. The first forms a connection with the whole interior of the kingdom, and the second is connected with it. Through them, internal navigation is conducted to the manufacturing counties, and to the dis¬ tant ports of Liverpool, Bristol, and Hull, and to the pot¬ teries, iron-founderies, and collieries of Staffordshire and Warwickshire. The Regent’s Canal surrounds the whole of the northern side of the metropolis, around which it de¬ scribes a semicircle, commencing at the dock of the Pad¬ dington Canal, and terminating at the river Thames at Limehouse. Its principal utility is supposed to be derived from forming the means of conveying coals and other heavy commodities from the river to the more distant parts of the capital without expensive land-carriage. We may here no¬ tice two works actually in operation, which may become of vast importance. These are, the railroad from London to Birmingham, which has been considerably advanced, and a similar one to Southampton, already commenced. For another to Bristol an act of parliament has been ob¬ tained. The docks constructed of late years for the facilities of commerce are most extensive and magnificent works, and the warehouses which surround them are wonderful exhibi¬ tions of the commercial opulence of this country, having been all completed from the capitals of individuals. The West India Docks contain about sixty acres of water, in which the largest vessels can float. The London or Wap- ping Docks are of nearly the same extent. The St Ca¬ therine’s Docks, finished in 1828, can accommodate an¬ nually 1400 vessels ; and, being near the centre of the trad¬ ing establishments, are found of vast benefit. The East In¬ dia Docks are more than thirty acres; and near them is a dock belonging to private individuals (Messrs Wigram and Green), of nearly twenty acres, where the business of ship¬ building is carried on upon a scale which exceeds that of most of the establishments of the governments of Europe. The most remarkable edifices of this county are more properly described under the articles London and West¬ minster in this work. Beyond the limits of these cities may be noticed the- palaces of Hampton Court and Ken¬ sington ; the Hospital of Chelsea, for invalid soldiers ; the Royal Military Asylum ; the bridges of Staines, Vauxhall, and Waterloo ; Middlesex Hospital; St George’s Hospital; Jews’ Hospital; and Harrow School. The number of other erections, of a second and third order, are too numerous for recapitulation. The changes of property have been so rapid in this county, and the taste for substituting fashionable novelty in the room of venerable antiquity has been so prevalent, that very few first-rate seats are to be found, but a vast number of second and third-rate houses, which, if removed from the vicinity of the metropolis, would attract consider¬ able notice. The most remarkable residences are, Bendy Priory, Marquis of Abercorn; Bushy Park, the residence of his present majesty when Duke of Clarence ; Caenwood, Earl of Mansfield ; Chiswick House, Duke of Devonshire; Fulham Palace, Bishop of London ; Holland House, Lord Holland ; Littleton, Thomas Wood, Esq.; Osterley House, Earl of Jersey; Sion House, Duke of Northumberland ; Strawberry Hill, Countess of Waldegrave ; Wrotham Park, George Bvng, Esq.; Harrow, Lord North wick ; and Sion Hill, Duke of Marlborough. (See Middleton’s View of the Agriculture of Middlesex; and Brayley’s Beaidies of England and Wales.) MID 61 Middlesex is also the name of four different counties Middlesex in the United States of America, one of which is in Mas- 11 sachusetts, another in Connecticut, a third in New Jersey, Middle- and the fourth in Virginia. * v > MIDDLETON, Dr Conyers, a celebrated English divine, was the son of a clergyman in Yorkshire, and born at Richmond in 1683. He distinguished himself, whilst fellow of Trinity College, Cambridge, by his controversy with his master Dr Bentley, relative to some mercenary conduct of the latter in that station. He had afterwards a controversy with the whole body of physicians upon the dignity of the medical profession, concerning which he published JJe medicorum apud veteres Romanos degentium, conditione Dissertatio; qua, contra viros celeberrimos Jaco- bum Sponium et Richardum Meadium, servilem atque igno- bilem earn fuisse ostenditur. In the course of this dispute much resentment was manifested, and many pamphlets ap¬ peared. Hitherto he had stood well with his clerical bre¬ thren ; but in 1729 he drew upon himself the resentment of the church, by writing a Letter from Rome, showing an exact conformity between Popery and Paganism ; as this letter, although politely written, yet attacked Catholic mi¬ racles with a gaiety which appeared dangerous to the cause of miracles in general. Nor were his Objections to Dr Waterland’s manner of vindicating Scripture against Tindal’s Christianity qs old as the Creation, looked upon in a more favourable point of view. In 1741 appeared his great work, entitled History of the Life of M. Tullius Ci¬ cero, in two vols. 4to, which is indeed a fine performance, and will probably be read as long as taste and polite lite¬ rature subsist amongst us. In 17’48 he published a Free Inquiry into the Miraculous Powers which are supposed to have subsisted in the Christian Church from the earliest ages, through several successive centuries. He was now- attacked from all quarters ; but before he took any notice of his antagonists, he supplied them with another subject, in an Examination of the Lord Bishop of London’s Dis¬ courses concerning the Use and Extent of Prophecy. Thus Dr Middleton continued to display talents and learning, which are highly esteemed by men of a free turn of mind, but by no means in a method calculated to invite promo¬ tion in the clerical profession. In 1723 he was chosen prin¬ cipal librarian of the public library at Cambridge ; and if he rose not to a high station in the church, he was at least in easy circumstances, which permitted him to assert a dig¬ nity of mind that is often forgotten in the career of pre¬ ferment. He was one of the best writers of his age; and he displays a degree of skill and beauty in the structure of his long sentences, which has but rarely been equalled. He died in 1750, at Hildersham, in Cambridgeshire, an estate which he had purchased; and in 1752, all his works, except the life of Cicero, were collected in four vols. 4to. A second edition, in five vols. 8vo, was published in 1755. Middleton, Sir Charles, Island, one of the Fejee Islands, in the South Pacific Ocean. It is fertile, and situated in long. 181. W. lat. 17. 2. S. Middleton Cheyney, a town of the county of Nor¬ thampton, in the hundred of King’s Sutton, seventy miles from London. It is situated in a fertile district on the borders of Oxfordshire, and contained a population in 1801 of 1153, in 1811 of 1172, in 1821 of 1398, and in 1831 of 1415 persons. MIDDLEWICH, a town of the county of Chester, in the hundred of Northwich, 166 miles from London. It is situated between the rivers Wheeloch and Dane, which unite below the town and fall into the Wever; and it has also a canal communication with the Mersey at Runcorn. It has celebrated brine springs of great strength, from which abundance of culinary salt is made, and conveyed with fa¬ cility to Liverpool. Of late years a branch of the cotton 62 M I D Midhurst manufacture has been established here. The market is held II on Tuesday. The population of the town amounted in 1801 Midwifery. t0 1190j in ]8U t0 1232, in 1821 to 1212, and in 1831 to 1325; but the whole parish, at the last census, contained 4782 inhabitants. MIDHURST, a town of the county of Sussex, in the hundred of Westbourne and rape of Chichester, fifty-one miles from London. It is situated on the river Arun, and adjoining to it is the magnificent park of the Lords Mon¬ tague, and the remains of the fine mansion, Cowany House. It is an ancient borough, and returned two members to parliament; but one has been taken from it by the reform act. The population amounted in 1801 to 1073, in 1811 to 1256, in 1821 to 1335, and in 1831 to 1478. There is a market on Thursday. MIDIAN, or Madian, in Ancient Geography, a town on the south side of Arabia Petraea, which was so called from one of the sons of Abraham by Keturah. MIDNAPOOR, a district of Bengal, in the province of Orissa, containing an area of 6102 square Iniles, and about a million and a half of inhabitants. The bulk of the people are Hindus, but there is a greater proportion of Mahom- medans than in most other parts of India. Two thirds of this extensive district consists of a jungle swarming with noxious animals, and exceedingly unhealthy, although the land is rich and fertile. This district was formerly ceded to the East India Company in 1761. Having been long the scene of warfare between the Afghans, Moguls, and Mahrattas, it contains a great number of small forts, which serve as a refuge for robbers, from which they frequently annoy the inhabitants. The country produces abundance of grain, sugar, tobacco, cotton, and indigo. Its principal towns are Midnapore, Jellasore, Piply, and Narraingur. Midnapore, the capital, formerly possessed a fort, which has been converted into a criminal prison. It is seventy miles west by south from Calcutta. Long. 87. 25. E. Lat. 22. 25. N. MIDSHIP-Frame, a name given to that timber, or combination of pieces formed into one timber, which de¬ termines the extreme breadth of the ship, as well as the figure and dimensions of all the inferior timbers. MIDSHIPMAN, a sort of naval cadet, appointed to se¬ cond the orders of the superior officers, and to assist in the necessary business of the vessel, either on board or on shore. MIDWIFERY, the art of assisting women in parturi¬ tion. In a more extended sense, it is understood to com¬ prehend also the treatment ot the diseases of women and children. It is obvious that the obstetrical art must have been almost coeval with mankind; but in Europe it conti¬ nued in a very rude state till the seventeenth century ; and even after physic and surgery had become distinct profes¬ sions, it remained almost totally uncultivated. It is a curious fact, that in China the very reverse of this has taken place. In that empire, both physic and surgery are still in a state of degradation ; but for some hundreds of years, the art of midwifery has, it is said, been practised by a set of men destined to the purpose by order of government. These persons, who hold in society the same rank which lithotomists formerly did in this country, are called in whenever a woman has been above a specified number of hours in labour, and employ a mechanical con¬ trivance for completing the delivery without injury to the infant. A proportional number of such individuals is al¬ lotted to each district containing a certain population. It is said, that the Chinese government was led to make this provision for alleviating the sufferings of women in child¬ birth, in consequence of a representation, that annually many women died undelivered ; and that in the majority of cases the cause of obstruction might have been removed by very simple mechanical expedients. M I D Both Sir George Staunton and Mr Barrow were igno- Midwifer rant of this fact; and the latter in particular expressly II mentions that there are no men-midwives in China; but Mieza. we have learned the facts above stated from a gentleman who resided upwards of twenty years as surgeon to the British factory at Canton, and who had both the ability and the inclination to make himself acquainted, during the course of so long a residence, with all the customs and pre¬ judices of the natives relating to the preservation of human life and health. Towards the end of the seventeenth century, the same causes which had so long before led to the cultivation of midwifery in China produced the same effect in Europe. The dangers to which women are sometimes exposed dur¬ ing labour excited the compassion of the benevolent; and hence a considerable part of the first hospital which was esta¬ blished for the reception of the indigent sick, the Hotel Dieu of Paris, was appropriated to lying-in women. The opportunities of practice which that hospital afforded, di¬ rected the attention of medical men to the numerous acci¬ dents which happen during labour, and to the various dis¬ eases which occur after delivery. Public teaching follow¬ ed, and soon afterwards began the custom of employing men in the practice of midwifery. From this period the art rapidly improved ; and it is now in many parts of Eu¬ rope, particularly in Great Britain, in as great a state of perfection as physic or surgery. There can be no doubt that the improvement of the art of midwifery chiefly arose from medical men directing their attention to the subject; but the propriety of men being employed in such a profes¬ sion has been much questioned by many individuals of considerable respectability. It appears, indeed, that this question may be brought within a very narrow compass. It may be assumed as a fact established beyond the reach of controversy, that sometimes dangers and difficulties occur during labour, which can be lessened or removed by those only who have an intimate knowledge of the structure of the human body and of the practice of physic. On such occasions, it must be admitted, that medical men alone may be useful. But as such labours occur only in the proportion of two or three in the hundred, the general practice might be confided to midwives, if they could be taught to manage ordinary cases, and to foresee and distinguish difficulties or dangers, so as to procure in sufficient time additional as¬ sistance. It is on this point that the decision of the ques¬ tion must depend, and there can be no doubt that women may be taught all this. But there are many who allege, that, a little knowledge being a dangerous thing, midwives ac¬ quire a sell-sufficiency which renders them averse to calling in superior assistance; and that, in consequence, they often occasion the most deplorable accidents both to the mother and the child. In England this is the popular opinion, and hence women are there almost entirely excluded from the practice of midwifery. A similar prejudice against midwives has, it is believed, begun in some parts of Scot¬ land ; but it is presumed this will gradually cease, when it is considered that, in general, the Scotch midwives are re¬ gularly instructed, and are at the same time both virtuous and industrious. It they attend strictly to their duty, and invariably prefer the safety of their patients to their own eehngs or supposed interest, they will deservedly retain tue public confidence. But if in cases of difficulty or dan¬ ger they trust to their own exertions, or from interested motives decline the assistance of able practitioners, and if trey interfere in the treatment of the diseases of women and children, they will in a few years be entirely excluded trom practice. For details connected with the practice of mi wi ery, we refer to the professional works which treat °. J'le su and which are too well known to require spe¬ cification. ’ r MIEZA, in Ancient Geography, a town of Macedonia, M I L 1 M I L IliVlieza situated near Stagira, and in the olden time called Stry- II monium. Plutarch informs us, that in this place were Milan, the stone seats and shady walks of Aristotle. MIGDOL, or Magdol, in Ancient Geography, a place in Lower Egypt, between Pihahiroth and the Red Sea. The term denotes a tower or fortress. It is probably, the Magdolum of Herodotus; at least the Septuagint render it by the same name. MIGRATION, the passage or removal of a thing out of one place into another. For the migration of birds, See Ornithology. MIGUEL, St, or St Michael, one of the Azore Islands, situated in long. 25. 45. W. lat. 38. 10. N. See Azores. MIHEL, a town of the department of the Meuse, and arrondissement of Bar-le-Duc, in France, on the right bank of the Meuse, containing 5250 inhabitants, who produce very good wine. MIKH AILOW, a circle of the Russian province of Ria- san, extending from east longitude 38. 24. to 39. 4. and from north latitude 53. 52. to 54. 29. It is very productive in corn, hemp, flax, and cattle. The capital is the city of the same name situated on the river Prona, and containing 408 houses and 2300 inhabitants. Long. 38. 42. E. Lat. 54. 12. N. MILAN, called by the Italians Milano, and by the Ger¬ mans Mailand or Mayland, is one of the governments into which the Austrian kingdom of Lombardy is divided. It was known as the duchy of Milan, till it came under the dominion of the imperial family of Austria. In the article Italy of this work, the history of the ancient realm of the Longobards, with its kings of the iron crown, is noticed, as well as the other remarkable events respecting this country; and here we need only state the dates of the principal oc¬ currences under the independent dukedoms. The first duke was Galleafco Visconti, who was install¬ ed in that dignity by the Emperor Wenzel in the year 1395; and it continued in his family till the male line be¬ came extinct in 1447. Erance made some urgent efforts to obtain the authority, but these were of no avail, as Fran¬ cisco Sforza, who had married an illegitimate daughter of the last Visconti, succeeded in gaining possession of the supreme power in this beautiful country, and transmitted it to his successors, who ruled till 1499. At that period Louis XII. king of France, and Francis I. emperor of Germany, laid claim to it. It was long the subject of con¬ tention between these two great powers, sometimes possess¬ ed by one, sometimes by the other, till after the decisive battle of Pavia in 1525, by which the emperor became master of Milan ; and, Ry the treaty of Madrid in 1556, the possession of it was confirmed, when Francis granted it to Maximilian Sforza, to be held as a fief of the Holy Roman empire. The house of Sforza became extinct in 1535, upon which the Emperor Charles V. granted the duchy to his son Philip the Second, king of Spain. It re¬ mained under the power of the heirs of that crown till the war of the succession in 1706, when the events of that con¬ test placed it in the hands of the house of Austria; but, by the treaty of Vienna in 1735, and by that of Worms in 1745, several portions of the country were delivered over to the king of Sardinia. The French revolution occasion¬ ed a successful invasion and much fighting, which in 1796 produced the ephemeral Cisalpine republic, which was an¬ nihilated by the Austrians and Russians in 1799 ; but the decisive battle of Marengo in 1801 gave the whole coun¬ try to Bonaparte, who soon erected his kingdom of Italy, with the city of Milan as its capital and the residence of his viceroy. The peace of Paris in 1814 restored it again to the Austrian dominions, under which it has continued to the present day. Milan is at present divided into the following nine dele¬ gations. 63 Delegations. Extent in Square Miles. Milan Brescia Cremona Mantua Bergamo Como Pavia Lodi, with Crema... Sondrio 1034 1254 484 594 1452 1450 528 748 1364 8906 Population. 483,103 335,157 182,559 255,307 205,042 356.015 153,242 204,042 86,947 2,261,414 Milan. By a late return, it appears that the males under seven¬ teen years of age were 390,634, those between seventeen and twenty-four 88,993, those betw-een twenty-four and thirty-four 105,780, those between thirty-four and forty- six 230,405, and those above forty-six were not classed, as the account was taken for military purposes, from which persons above that age are exempt. The chief occupation of this body of inhabitants consists in the cultivation of the soil. As that subject has been discussed in what appears its most appropriate place in this work under the head of Lombardy, our readers are re¬ ferred to that article. This government contains 462,700 families, who inhabit 279,160 houses, in fifteen cities, ninety-seven market-towns, and 3217 villages. It is bounded on the east by the government of Venice, on the north by the Swiss cantons, on the west by the territory of Sardinia, and on the south by Parma, Modena, and Sardinia. The northern part is mountainous and sterile, comprehending a portion of the Alps and extensive lakes ; but the southern and much the larger part is level and highly fertile, being watered by numerous streams issu¬ ing from the lakes, all of which, with their various tributary rivulets, are finally emptied into the Po. There are abun¬ dance of canals connected with the rivers and with each other, which are made use of both for the purposes of irri¬ gation and for the conveyance of goods ; but on these high¬ ly interesting topics we must refer the reader, as before, to the general article Lombardy. Milan, a city, the capital of the Austrian kingdom of Lombardy, as well as of the delegation in which it stands. Although it has suffered much by war, and by the politi¬ cal events of the last fifty y^ears, it is still the richest, and, except Naples, the most populous city of Italy. It stands on the river Olona, and, by means of the canal called Na- viglio Grande, is connected with the river Ticino, and, by the Martesana, with the river Adda, From this water in¬ tercourse, and from the excellence of the roads in all di¬ rections round the city, the markets are supplied with every necessary in the most convenient and easy manner. The city is nearly of a circular figure; it is walled, but scarcely defensible against a decided attack; and it is pro¬ tected by a citadel containing six bastions. The whole compass of the wall is 5900 fathoms, or nearly seven Eng¬ lish miles. The longest part, from the Porta Romana to the Porta Sempione, is 1800 fathoms; and the broadest part, from the Porta Ticenese to the Porta Orientale, is 1600 fa¬ thoms. The wall is furnished with eleven gates, some of which are the most striking objects of the city, and merit special notice. The most remarkable ol these is that at the gate leading to 'licino, which resembles the entrance to a Roman temple. It is built of granite, and consists of colossal pillars of the Ionic order, with an appropriate pe¬ ristyle ; and in connection with it is the fine bridge over the Naviglio Grande. The Area della Pace, or del Sempione, Bonaparte had formed the design of erecting as a trium- 64 M I L Milan, phal arch to celebrate his conquest and dominion over Italy. It was not finished at the fall of Napoleon in 1813, but was completed by the Emperor of Austria in 1816, and a name given to it intended to commemorate the return of peace. The pillars, of six feet in circumference and forty feet in height, formed out of a single block of marble, are its most distinguishing ornaments. The arch resting on them, of a breadth nearly equal to that of Constantine, is ornamented with a car of bronze, to which six horses are harnessed, and in which the goddess of victory is seated. The whole building is of white marble, with the various figures and bas-reliefs of bronze. The streets of this city are generally narrow and crook¬ ed, and rather gloomy from the height of the buildings. One of the streets, the Corso, or High Street, is an ex¬ ception ; it runs through the whole city, is nearly two miles and a half in length, is of great breadth, and on both sides has magnificent and lofty houses. In the whole city the pavement is far better than is usually seen in towns on the Continent. It is composed of small pieces of marble or of granite, and in the middle, where the carriages pass, there are in the narrow streets two, and in the broad streets four, rows of flat granite laid dowm, on which the wheels run ; and for foot passengers there is a similar pavement close to the houses. The streets are kept clean, which is owing to a branch of industry exercised by the poorest people, who collect in baskets whatever filth can be converted into ma¬ nure, and carry it out of the gates, where it alwrays finds ready purchasers. There are in Milan few piazzas or squares, and none either large, fine, or even regular. The Piazza di Duomo is long, but narrow and disfigured by the booth-like shops and buildings that surround it. The Piazza di Mercante has in its centre a portico where the traders assemble, but it is small. The Piazza Fontana has a fine fountain, with two excellent figures in marble. The Piazza d’Armi, formerly the Foro Bonaparte, is the best promenade in Milan. It is used as an exercising place for the garrison, stands near the citadel, and on Sundays and holidays is much frequent¬ ed by the more fashionable part of the inhabitants. It is planted with tx-ees, and is about 600 yards long and 540 broad. Amongst the public buildings in Milan, the churches are the most remarkable; the first of which, the Duomo or ca¬ thedral, is the most remarkable. Next to St Peter’s at Rome, it is the largest church in Italy. It is 480 feet in length, 285 feet in breadth ; the height of the cupola is 240 feet, and of the highest pinnacle 352 feet. This vast edifice, dedicated to St Charles, was commenced so long ago as the year 1386. The various turns of fate that have attended the city have had their influence in retarding or furthering the progress of the work. Under Napoleon, large sums were drawn from the public revenue and ap¬ plied to this structure; and since the restoration of the Austrian government, the Emperor of Austria has direct¬ ed 12,000 francs, or about L.500, to be paid monthly till the completion of the edifice. It is now finished, except the placing of a number of statues, for which vacant places are left, and some few ornaments which wait the finishing touch of the artists. The outside of the church, which is wholly of white marble, and which in several places, from the weather, had become black, has been well rubbed, and now appears quite as white as the newer parts. It is to be regi-etted that there is no place from which a good point of view of this cathedral can be obtained. On three sides it is built up by narrow streets, and only the majestic front with its five colossal entrances can be seen from the Piazza di Duomo. The whole building is in the Gothic style, but it has been frequently departed from, which is considered by the cri¬ tics as its greatest,, or, indeed, its only fault. A vast col- M I L lection of figures from the hands of the most eminent sta¬ tuaries, to the number of more than 5000, are placed upon the walls, upon the Gothic turrets, and upon the pinnacles. They are images of various saints, all as large as life. Rich¬ ly-ornamented galleries, with finely-carved volutes and roses, extend from one tower to the other. The roof is a surprising work, which is reached by a winding staircase of two hundred steps, from which the labyrinth of pillars sur¬ rounding the spectator haS a most singular effect. In the centre of the roof rises the majestic dome, on which is placed a bronze statue of the Virgin Mary. The church has five entrances, which lead to that num¬ ber of divisions, pointed out by fifty-two octagonal marble pillars, eighty-six feet in height, which are bound together at the top by Gothic arches. The altars are numerous and richly ornamented, and on the floor a meridian line was in¬ serted in 1786. The floor is composed of pieces of marble of different colours, by which various ornamental figures are formed. The first entrance to this edifice is most im¬ posing and exciting. The panorama from the top is very gratifying, exhibiting near to it the whole circuit of the city; the verdant fields in contact with it on the south side; the rich plain of Lombardy, extending to the river Po, and terminating with the Apennines, studded with towns, vil¬ lages, and hamlets, intermingled with vineyards and woods of mulberry trees; whilst on the north the same kind of pros¬ pect is bounded by the Alps, having Monte Rosa in front, with ranges of mountains rising one above the other, the most distant rearing their tops into the region of eternal snow. I he other ecclesiastical edifices are numerous, being stated to be no less than seventy-nine, most of them of great interest; but our space will admit of noticing but a few of the most remarkable. The imperial collegiate church of St Ambrosio is distinguished by its antiquity; and the most costly ornaments, and numerous objects of art, are to be seen within it. It is a kind of museum for the his- toi'y of the arts, and is also the church iix which the kings of Lombardy of the iron crown were consecrated. The church of St Alessandro contains valuable treasux-es in paintings chiefly in fresco, and sumptuous statuary; whilst the capitals of the pillars that support it are of bi*onze. The churcn of St Nazax*o is one of the finest and largest in the city, and is adorned with some of those best paintings, both in oil and in fresco, which have immortalised the master’s of the Italian school. St Sebastian’s is worthy of notice from its architectui’e in the rotunda form. It was formerly a Roman temple, and still displays many specimens of its antiquity. It is said to have been one of the three churches which Barbarossa spared from Ifis general devastation. Ihe church of St Fidele unites simplicity with great ex¬ tent, but its facade is yet unfinishid. The St Maria Mag- giore contains many vei’y fine ancient paintings, and the monument of St Bernhardin. The celebrated fresco paint¬ ing of the Last Supper, by Leonai’do da Vinci, remains in what was formerly the refectory of the Dominican con¬ vent, but is now used as a magazine for hay and straw. It has been much neglected, and the saltpetre, which has ex¬ tended itself over the wall on which it is painted, has de¬ stroyed the glow of the colours, and in many places the paint has peeled off, whilst in others it is covered with mould. Sevei'al amongst the civil buildings are deserving of notice. Ihe x’oyal palace, though its exterior makes but little impression, is the residence of the vicei’oy. It is called the Villa, and contains a magnificent apartment, in which stands .the tin-one. It contains many curiosities, and amongst the rest the fresco paintings of Appiani. The pa¬ lace of the archbishop is a fine piece of architecture, and contains an admii’able collection of paintings The Palace Marini, now used as an office for the public accounts, is con¬ sidered as the most perfect, as it is one of the largest, build¬ ings in Milan. Besides these edifices, the mint, in which M I L iMilan. is a fine statue of Philip II. of Spain, the Villa Belgioso, the palaces of the families of Serbelloni, of Cicogna, of Litta, of Melzi, of Andreani, of Borromeo, and of numer¬ ous others, are of great extent, as well as of various kinds of architecture, and produce much interest amid the ge¬ neral aspect of the city. Of modern buildings, the barracks, erected under the viceroyship of Eugene Beauharnois, are the largest, the most handsome, and the most convenient, of any pile of the kind in Europe. The establishments and the erections devoted to the sciences, to literature, and to the fine arts, are the most distinguishing objects on which the Milanese can pride themselves. Above all others is the Brera, formerly the col¬ lege of the Jesuits, and before them of a bi'otherhood called Umiliati; at present it is connected with the university of Pavia. The interior square of the building is surround¬ ed with colonnades, on the ground floor composed of Doric, and on the upper floor with Ionic pillars, forming open halls. The tower of this edifice is employed as an astrono¬ mical observatory, and the garden is made use of for the purpose of botany. The ground floor is adapted for lecture- rooms, and the upper floor contains a library of more than 100,000 volumes and numerous valuable manuscripts. Ad¬ joining to it is the picture-gallery, containing many excellent productions, especially some most valuable fresco paintings, which have been preserved and removed from the churches and monasteries in and around the city. On the upper story are apartments, wherein is a collection of numerous casts of ancient and modern sculpture in plaster of Paris, and also one of coins and medals. The next in celebrity of the libraries in Milan is the Ambrosian, founded by Cardinal Borromeo. It consists of 60,000 volumes of books, and 15,000 of manuscripts, now bound so as to form only 6000 volumes. With this, in some other apartments, are connected collections of pic¬ tures and of statuary, both of great merit. Besides these public establishments, there are many collections of old and valuable works in the libraries Fagnani, Melzi, Reina, Litta, Archinto, and Trivulzi. In this large city, where the destitute, the aged, and the infirm, are very numerous, the institutions for their relief are upon a commensurate scale. The Ospitale Moggiore is a prodigious range of building, with a beautiful front, entered by magnificent portals of 450 feet in length. The usual number of patients contained in it is from 3700 to 4000. With this is connected the foundling hospital, in which 1100 children are maintained within the walls, and about 2900 are sent to board in the villages around the city. There is also a large lying-in-hospital; a lunatic asylum, in which are kept generally 420 insane persons ; the lazaretto, containing many small houses without the gates, as a precaution against the plague ; the Trivulzi, which contains 480 poor of both sexes, above seventy years of age, who are maintained by property bequeathed to it by the noble family of that name ; an orphan-house, which supports 350 young persons, and several smaller institu¬ tions. Besides these, the monks and the nuns of the order of mercy have each their benevolent establishments. Ihe places of amusement are not numerous, though upon a large scale. The opera-house, Della Scala, is one of the most extensive theatres of Europe. It was built in 1776, on the site of an ancient church of that name. It contains 240 boxes in six tiers, one above the other, and has seats for 800 persons in the pit, besides standing room in the centre and both sides of it, so that it is calculated to con¬ tain 7000 spectators. The performers, both in music and dancing, are of the very first class during the fashionable season. There is also another, the imperial theatre, or Canobbianca, and four or five small private theatres. The city, including the suburbs and the garrison, con- vol. xv. MIL 65 tains 163,000 inhabitants. The chief wholesale trade con- Milazzo sists in silk, either raw or spun, and in cheese; for the J{ particulars of which see the article Lombardy in thisv lieto'. work. The retail trade is much divided, and consists in that usually carried on in large cities, which it dispen¬ ses to the towns and the villages around it for domes¬ tic use. As Milan is a kind of metropolis to the north of Italy, and resorted to in the winter by the rich, at that time of the year the tradesmen are in full occupation ; but at other seasons they have little occupation, except what arises from the foreign visitors. The city, by observation taken at the cathedral, is in long. 9. 5. 45. E. and lat. 45. 27. 35. N. MILAZZO, a parliamentary city of the island of Si¬ cily, in the kingdom of Naples, on the sea-shore, near the termination of Cape Blanco. It is fortified, and though the situation is rather unhealthy, it contains a population of 8000 persons, who are chiefly occupied in the tunny fishery, and in the export of wine and oil. MILBOURN-PORT, a town of the county of Somer¬ set, in the hundred of Horethorne, 117 miles from Lon¬ don. It stands on a branch of the river Parret, and is a poor and scattered place, with small houses, chiefly built for election purposes. It formerly returned two members to the House of Commons, but has been disfranchised. It has no market. The population amounted in 1801 to 953, in 1811 to 1000, in 1821 to 1440, and in 1831 to 2072. MILDENHALL, a town of the county of Suffolk, in the hundred of Lachford, seventy-one miles from London. It is situated on a branch of the river Ouse, which is navi¬ gable for barges up to it, and is a source of its trade. There is a well-supplied market, which is held on Friday’. The population amounted in 1801 to 2283, in 1811 to 2493, in 1821 to 2974, and in 1831 to 3267. MILDEW is said to be a kind of thick, clammy, sweet juice, exhaled from, or falling upon, the leaves and blos¬ soms of plants. By its thickness and clamminess it pre¬ vents perspiration, and hinders the growth of the plant. It sometimes rests upon the leaves of trees in the form of a fatty juice, and sometimes upon the ears of corn. It is naturally tough and viscous, and becomes still more so by the sun’s heat exhaling its more fluid parts; by which means the young ears of corn are so daubed over that they never arrive at their full growth. Bearded wheat is less subject to the mildew than the common sort; and it is observed that newly-manured lands are more liable to mildew than others. The best remedy is a smart shower of rain, and immediately afterwards a brisk wind. If the mildew be observed before the sun has attained power, it has been recommended to send tw’o men into the field with a long cord, each holding one end ; and drawing this along the field over the ears, the dew will be dislodged from them before the heat of the sun has been able to dry it to the viscous state in which it does the mischief, or ra¬ ther, perhaps, to occasion that rapid evaporation which produces a degree of cold sufficient to nip and chill the ears, or, in other words, to affect them with mildew. Some are of opinion that lands which have for many years been subject to mildews have been cured of it. by sowing soot along with the corn, or immediately after it is sown. MILE, a measure of length or distance, containing eight furlongs. The English statute mile is eighty chains, or 1760 yards, or 5280 feet. See Weights and Measures. MILETO, a city, the Miletus of antiquity, of the king¬ dom of Naples, in the province of Calabria Ulteriore. It stands on elevated ground, but is watered by three small streams. It is the seat of a bishop. Lyr the earthquake in 1783, the castle, the cathedral, a parish church, two monasteries, and many dwellings, were thrown down, and 1700 lives were lost. It has been in some degree rebuilt since. i 66 M I L •<£ M I L Miletus II Milillo. MILETUS, in Ancient Geography, a town of Crete, mentioned by Homer, but the situation of which has not been ascertained. It is said to have been the mother town of Miletus in Caria, whither a colony was led by Sarpedon, brother of Minos. Miletus, in Ancient Geography, a celebrated town of Asia Minor, situated on the confines of Ionia and Caria. It was the capital city of Ionia, famous both for the arts of war and peace, and situated about ten stadia south of the mouth of the river Mseander, near to the sea coast. It was found¬ ed by a Cretan colony under Miletus the companion of Bacchus, or by Neleus the son of Codrus, or by Sarpedon a son of Jupiter. It has been successively called Lelegeis, Pithyusa, and Anactoria. The inhabitants, called Milesii, were very powerful, and long maintained an obstinate war against the kings of Lydia. They early applied themselves to navigation, and planted no less than eighty colonies, or, according to Seneca, three hundred and eighty, in ditfer- ent parts of the world. This was the only town which made head against Alexander, and which was with much difficulty taken. It gave birth to Thales, one of the seven wise men, and the first who applied himself to the study of physical science. It wras also the country of Anaximander, the scholar and successor of Thales, the inventor of the gno¬ mon, and the first who published a geographical map; of Anaximenes, thescholarand successorof Anaximander; and also of other illustrious men. It was noted for its excel¬ lent wool, and was also celebrated for a temple and oracle of Apollo Didymseus. It is called by the Turks Melas, and not far distant from it flows the river Maeander. St Paul proceeding from Corinth to Jerusalem passed by Mi¬ letus, and as he went by sea, and could not take Ephesus in his way, he caused the bishops and priests of the church of Ephesus to come to Miletus, which was about twelve leagues distant. MILFORD, a town of North America, in Sussex coun¬ ty, in the Delaware state, is situated at the source of a small river, fifteen miles from Delaware Bay, and 150 southward of Philadelphia. This town, which contains about eighty houses, has been built, excepting one house, since the revolution. It is laid out with much taste, and is by no means disagreeable. The inhabitants are Epis¬ copalians, Quakers, and Methodists. Milford Haven, a township of Pembrokeshire, in South Wales, in the parish of Harbrandstone, 257 miles from London. The town is of recent origin, having been created by the excellence of the haven, or rather bay, which, both m regard to extent and security, is perhaps one of the est in the south of the island. It has several creeks and bays, is calculated to receive a thousand sail of vessels, and is well fortified. It was the first place which com¬ menced the southern whale-fishery; and many ships of wai have been built there, as well as smaller vessels. It is the principal point of communication between the south of England and of Ireland, by vessels Waterford. The nearest town to the ton. daily departing for Haven is Habers- MILHAU, an arrondissement of the department of Aveiron, in trance, 806 miles in extent. It consists of nine cantons, divided into seventy-nine communes, and contains ol,o00 inhabitants. The capital is the city of the same name situated on the right bank of the Tarn where the Dourbie falls into that stream. The surround¬ ing country abounds with fruit, especially almonds and grapes. It contains 1230 houses, with 5750 inhabitants who make gloves, hats, various kinds of leather, and some porcelain. Long. 17. 1. E. Lat. 44. 10. N. MiULLO, a city of the island of Sicily, in the king¬ dom of Naples, and province of No to, 140 miles from Pa¬ lermo. It stands on a mountain near the river Cantara, and is a healthy place, with 4000 inhabitants. MILITARY, something belonging to or connected with Militan, the profession of a soldier. II Military Discipline, the training of soldiers, and the ^ltarJ' due enforcement of the laws and regulations instituted by i ate' authority for securing obedience and repressing all disor¬ derly habits or tendencies. Next to the forming of troops, military discipline is an object of the first importance. It is the soul of all armies ; and, unless it be established with great prudence, supported with unshaken resolution, and enforced with rigour tempered by judgment, an army is no better than an armed mob, and is more formidable to the state that maintains it than dangerous to its declared enemies. Military Execution, the ravaging or destroying of a country or town which refuses to pay the contributions im¬ posed upon them, or which has incurred that penalty from any transgression of the usages of war. Military State, in British polity, is one of the three divisions of the laity. This state includes the whole of the soldiery, or such persons as are peculiarly appointed for the safeguard and defence of the realm. In the time of the Anglo-Saxons, the military force of England was in the hands of the dukes or heretochs, who were constituted throughout every province and county in the kingdom, being taken from the principal nobility, and such as were most remarkable for being sapientes, Jideles, et animosi. Their duty was to conduct and regulate the English armies with unlimited power, pront eis visum fuerit, ad honorem cor once et ad utditatem regia. And because of this great power, they were elected by the people in full as¬ sembly, that is, by folkmote, in the same manner as sheriffs were elected ; according to the fundamental maxim of the Saxon constitution, that where any officer was to be intrust¬ ed with such power as, if abused, might tend to the oppres¬ sion of the people, that power should be delegated to him by the vote of the people themselves. The ancient Germans, the ancestors of our Saxon forefathers, had also their dukes, as well as kings; with an independent power over the military, as the kings had over the civil state. The dukes were elective, the kings hereditary ; reges ex nohili- tate, duces ex virtute summit. In constituting their kings, the family or blood royal was regarded; in choosing their dukes or leaders, they had respect to warlike merit alone. Caesar relates of their ancestors in his time, that whenever they went to war, either offensively or defensively, they elected leaders to command them. This large share of power, thus conferred by the people, though intended to preserve the liberty of the subject, was perhaps unreason¬ ably detrimental to the prerogative of the crown. Accord- ingly we find that, in the reign of King Edmund Ironside, a very bad use was made of it by Edric, duke of Mercia, who, by his office of duke or heretoch, was entitled to a large command in the king’s army, and by his repeated treachery at last transferred the crown to Canute the Dane. It seems to be universally agreed by all historians, that Alfred first settled a national militia in this kingdom, and by his prudent discipline made all the subjects of his do¬ minions soldiers. But wTe are unfortunately left in the dark as to the particulars of this celebrated regulation ; al¬ though, from what has been observed, the dukes seem to have been left in possession of a power so large and inde¬ pendent that, on the death of Edward the Confessor, it en¬ abled Duke Harold, though a stranger to the blood royal, to ascend the throne of this kingdom, in prejudice of Edgar Etheling, the rightful heir. Upon the Norman conquest, the feudal law, in all its ngour, was introduced into this country, the whole of t lat system being built on a military plan. Hence all t ie lands in the kingdom were divided into what were called knights fees, in number above sixty thousand ; and or every knight s fee, a knight or soldier, miles, was bound I’f MIL iilitary to attend the king in his wars for forty days annually ; in iLaw. which time, before war was reduced to a science, the cam- •'-y'""*'' paign was generally finished, and a kingdom either con¬ quered or victorious. By this means the king had, with¬ out any expense, an army of sixty thousand men always ready at his command. Accordingly we find one amongst the laws of William the Conqueror, which commands and enjoins the personal attendance of all knights and others, quod habeant et teneant se semper in armis et equis, ut decet et oportet; et quod semper sint prompti et parati ad servitium swum integrum nobis explendum et peragendwn, cum opus adfuerit, secundum quod debent de feodis et tenementis suis de jure nobis facere. This personal service in process of time degenerated into pecuniary commutations or aids ; and at last the military part of the feudal system was at the Restoration abolished, by statute 12 Car. II. c. 24. Military or Martial Laav, is that branch of the laws of war which respects military discipline, or the go¬ vernment and control of persons employed in the opera¬ tions or for the purposes of war. Military law is not exclu¬ sive of the common law ; for a man, by becoming*a soldier, does not cease to be a citizen or a member of the com¬ monwealth. He is a citizen still, capable of performing the duties of a subject, and answerable in the ordinary course of law for his conduct in that capacity. Martial law is, therefore, a system of rule superadded to the common law, for regulating the citizen in his additional character of soldier; a temporary character assumed for a special end, and to be laid aside when that end has been attained, and when the disturbance which gave occasion to it has subsided. For, as the law knows nothing of a mere sol¬ dier, or one bred up to no other profession than that of arms, so a perpetual standing army is against the princi¬ ples of the constitution, and, if without consent of parlia¬ ment, is clearly against law. Throughout all Europe, in the feudal times, property was commonly held upon condition of military service ; and the possessors of land were, by virtue of their right, at once its cultivators in peace and its defenders in war. But the fetters of land under the feudal system were in¬ compatible with a state of commerce, and the arbitrary power of lords over their vassals was adverse to civil liber¬ ty ; its strictness declined; the services of tenants were commuted for money, and with money were purchased the services of mercenaries, who were ready to make war a trade. The disorders incident to the disbanding of these troops, the changes which had taken place in the mode of warfare, and the necessity of attending to the balance of power in Europe, all concurred to suggest the idea of a disciplined standing army, which was formed first in France, and then in the other states of Europe. The military despotism, however, which ensued on the Conti¬ nent was in this country happily prevented by the spirit of a free people ; and at the Revolution it was asserted and declared, that the raising or keeping up a standing army within the kingdom, in time of peace, without consent of parliament, is contrary to law. The expediency of a stand¬ ing army is admitted, and at the same time the liberties of the people are maintained. A standing army therefore exists, but primarily for the benefit, because only with the consent, of the people. In early times the king’s justiciar was caput legis et mi- litice ; at the head not only of the law, but also of the mi¬ litary force of the kingdom. But in England, on the di¬ vision of the aula regis, the constable and marischal pre¬ sided over a court of chivalry for the determination of mat¬ ters of honour and arms. From time to time, however, other tribunals were subsequently instituted for the admi¬ nistration of martial law; and at length, after the Revolu¬ tion, when, in addition to the militia and other local troops of the kingdom, a regular standing army was judged ne- MIL . 67 cessary for the safety of the realm, the defence of the pos- Militello sessions of the crown, and the preservation of the balance II of power in Europe, acts were passed for the maintenance Militia, of military order and discipline. Scotland differed from1^ v England in this respect, that there was here no distribu¬ tion of the powers of the lord justiciar, such as took place in England, nor was there ever any court of chivalry. In other respects the two countries were, in as far as concerns martial law, very much alike. I he first of the military acts which passed after the Re¬ volution was occasioned by a mutiny in a body of English and Scotch troops (amongst whom were the regiment of" dragoons now called the Scotch Greys, and the royal Scotch regiment of foot), on being ordered to Flolland to replace some of the troops of that country which King William had brought over with him. The circumstance was com¬ municated to parliament, and on the 3d April 1689 an act was passed for punishing mutiny, desertion, &c. It autho¬ rized the king to grant commissions to certain officers to hold courts martial, for the trial of crimes committed by officers and soldiers ; and this act, which has been renewed from time to time, has since the Union been extended to Scotland. An act of the same nature w'as passed in the parliament of England, 13 Cha. II. stat. i. c. 9, authorizing the lord high admiral to grant commission to inferior vice-admirals, &c. to assemble courts-martial for the trial of offences com¬ mitted at sea by officers, marines, or others in the king’s naval service. But this statute was in many points altered by subsequent enactments, till at last all the laws relating to courts-martial for the sea service were reduced into one act, applying equally to the whole united kingdom, namely, 22 Geo. II. c. 33, explained and amended by 19 Geo. III. c. 17. The more recent statutes for the government of the forces, naval and military, are 1 Will. IV. c. 14, 15 ; 2 and 3 Will. IV. c. 23, 28; 3 and 4 Will. IV. c. 5, 6 ; 4 and 5 Will. IV. c. 4, 5, &c. To detail the provisions of these acts would extend this article beyond the limits allowed to it; and it is not necessary to do so, as the acts themselves, which are very full and explicit, must be in the possession of those interested in them. We shall only observe, that the judgments of courts-martial, like those of other courts, are liable to be taken cognizance of in the superior courts of common law, and the members punished for illegal pro¬ ceedings, and for all wilful and corrupt abuse of authority against the known, obvious, and common principles of justice. (See Tytler on Courts-Martial; Adye on Courts-Mar¬ tial; and M‘Arthur on Courts-Martial.) u. u. u. Military Tenures. See Feojdal System, and Knight. MILITELLO, a city of the island of Sicily, in the king¬ dom of Naples and province of Noto, 120 miles from Pa¬ lermo. It is moderately healthy, being situated on a rocky mountain, and contains 8000 inhabitants. Near to it are some valuable salt lagunes. MILITIA, from the Latin miles, a soldier, in its original signification, means warfare, the qualification of soldier¬ ship, or the military body. In this last signification it be¬ came incorporated with the English language. It is now used to distinguish, from the regular forces, the body of citizens who may be annually called out for a limited time, and embodied on occasions of emergency. As the system out of which the present militia has arisen existed previ¬ ously to the establishment of a mercenary army, and fre¬ quently constituted the sole military organization of its time, a historical sketch of the institution will involve to a certain extent a general view of the military state of Britain during the earlier periods of our history. Any account of the military system of the Saxons, es¬ pecially when we approach the era of the Norman conquest, 68 MILITIA. Militia. becomes involved in the great question as to the extent to ^ which feudal practices had been adopted in England pre¬ vious to that event. It has, however, been distinctly ascer¬ tained, that land, amongst the Anglo-Saxons, became not only the reward of military services performed, but the stipulated wages of their continuation. Thus there came to be a connection between the performance of services to a chief and the holding land under him, the soldier or thane possessing the land on the condition of performing military duties, but not, as by the mature usages of the feudal sys¬ tem, rendering the service as an incident of the tenure of the land. The grants so made were generally for a con¬ tingent period, and were revocable from a vassal unfit to perform his military engagements ; and we find amongst them a species of transaction so complicated as grants to churchmen, on the condition of their making provision for the performance of the military duties they were person¬ ally disqualified from undertaking.1 The oath of the vas¬ sal was personal and conditional, and had no reference to the land as a bond of union.2 It was the duty of the su¬ perior to protect his follower, and when he ceased to do so, the vassal was relieved from obedience ; but desertion was viewed as a crime of great magnitude. Those freemen who had not undertaken to perform military service in re¬ turn for lands were entitled, like the clients of the Romans, to select their own “ Hlafords” or patrons but this class of followers seems to have gradually decreased towards the era of the conquest, when it would appear from Domesday- book that all land was, or was presumed to be, held of a su¬ perior. It was perhaps for the furtherance of such a prin¬ ciple, without the invasion of existing free rights in pro¬ perty, that an exception sometimes appears in favour of the tenant: “ Et poterat ire cum ea (terra) ad quem vellet Do- minum intimating that he might hold his land of whatso¬ ever lord he chose. _ Whatever right the patron may have had to the exclu¬ sive military services of his dependent, it undoubtedly yielded to the claim of the state to the assistance of every freeman in cases of invasion or rebellion. It is probable that when the national force, denominated the ftyrd, was brought into existence, the right of patronage gave the superior no further power than that of leading his depend¬ ents when they joined the general host. The approach to any decision on this point is impeded by many difficulties, arising from the incongruities in the practice of different periods and of different parts of the country, and the ab¬ sence of any contemporary treatise explanatory of the ge¬ neral rules and the reason of the apparent exceptions. It is thus that on some occasions the right of the Hlaford to command his followers is spoken of without any reference to the paramount claims of the public, whilst elsewhere we find the community arrayed by command of the sovereign, without reference to the circumstance that two distinct classes are to appear in the field, in the respective posi¬ tion of patrons and vassals. “ From the earliest period ” says Six Iiancis I algrave, “ to which our documents can reach, we find the Fyrd appearing as a general armament of the people, comprehending every rank, though under different obhgations and penalties. If the Sithcund-man, being a landholder, remained at home, he forfeited all his land; sixty shillings was his fine ; whilst thirty shillings was the Fyrdunte of the churl, and to the last it continued a levy of all the population of the countrv.”3 Sir William Blacks tone and others include the national militia amongst the improvements attributed to the inventive genius of the great Alfred. The Fyrd, however, is of earlier origin. In the laws attributed to Edward the Confessor, the authenti¬ city of which is justly doubted, though they are certainly the work of some one well acquainted with the Anglo-Saxon constitution, there are regulations for the organization and discipline of the Fyrd, probably embodying those improve¬ ments of Alfred which procured him the credit of having planned the system. These regulations adapt the arms to be provided by each freeman to a scale of wealth ; forbid their being sold or pledged under penalties; provide for their descending to heirs; and appoint annual exhibitions, which, in order to baffle attempts to display the same weapons in different districts, were to take place simultaneously all over the country.4 The command w?as given to district- leaders called “ Heretochs,” who, it is stated, w ere, like the vice-comites or sheriffs, elected by their respective districts in full folkmote. Sir William Blackstone observes, that the power thus vested in the people proved dangerous to the community, by erecting a rival to the royal preroga¬ tive ; and he refers to this source of influence the treachery of Eric Streone, and the usurpation of Harold. Whatever the theory of the Anglo-Saxon constitution may have ad¬ mitted, how ever, it does not appear, from the history of the period, that the voice of the people regularly influenced the command of the natural force ; and undoubtedly, in the instances cited, the power unduly used had been otherwise obtained. The Norman conquest did not produce so much effect, by altering the system so established, as by bringing the new engine of feudalism to act in concert with it. The king was then the commander of two separate forces. His feudal army was furnished by the tenants of his knights’ fees, for each of which he could demand the ser¬ vice of one knight or of two esquires for forty days. These were his personal followers during their period of service, and were liable to be employed either at home or abroad. But the absolute demand on his services was inconvenient to the vassal, and the limitation of the period was often no less so to the king. Hence those who were partial to the occupation of war frequently remained with the army be¬ yond their assigned period for a stipulated remuneration, whilst others got their services commuted into a money- payment, which afterwards merged into the oppressive ex¬ action ol scutage. Whilst this new species offeree came into operation, the Fyrd of the Saxons still remained in existence. It afterwards w^as the source whence arose two distinct institutions; the posse comitatus, liable to be called out by the sheriff to keep the king’s peace ; and the militia force of the present day. In the celebrated “ assize of arms” of 1181, we find the Fyrd of the Anglo-Saxons in its original purity. All free¬ men are appointed to have arms in their possession, ac¬ cording to a scale of ranks, which consists, first, of the holders of a knights fee; secondly, of the possessors of chattels or ren ts to the extent of sixteen merks ; thirdly, of ihe holders of similar property to the value of ten merks; and, lastly, of all other burgesses and freemen.5 The Fyrd, with its periodical exhibitions of arms, was recognised as late as the year 1285, when, by the statute of Winches¬ ter (13 Ed. I. st. 2, c. 6), the scale of arms assigned to the respective ranks was revised. The part of the act which enforces the keeping of arms was adjusted to the progress of the art of war in 1558 (4 and 5 Ph. and M. c. 2), and finally abolished in 1604 (1 Jac. I. c. 25, sect. 46). Meanwhile practices commenced which gave rise to much subsequent dispute respecting the question, how far the light of the monarch to demand the military assistance of 3 £ller' 011 Growth oftlufltoyal' Prerogative, aT 5 P4ro°fs an!, lUustrations, - I*roofs and Illustrations, ul supra, ccclxviii. a ’ I ■ ^^wardi, apud r ’ 5 Wilkins, 296. eexx. Wilkins, sect. 35. MILITIA. 69 Idilitia. his subjects in such wars as he chose to prosecute, was re- like the last cited statute, an act of grace, having been pass- Militia. •^v^^stricted. Many apparent anomalies in the constitution of ed for the protection of the persons nominated as com-'v-^y-^ this early period may be explained by reflecting that the An- missioners, who, according to the preamble, were liable to glo-Saxon people continued to cherish certain privileges and many penalties and forfeitures in the performance of their customs which the Norman monarchs were often unable assigned duties. It is worthy of note, as bearing on the openly to abolish, whilst they were frequently powerful extent of the authority intended to be conferred by this enough to infringe them. The annual array was an institu- act, that during the previous year (by 4 Hen. IV. c. 13) tion with which they naturally tampered, finding it their in- the enactments above referred to, checking the encroach- terest to amalgamate it with their feudal prerogatives. On ments of the royal authority, were all jealously confirmed ; the other hand, there were no definite limits to the prero- the holders of lands in Wales find of military fiefs, and gative, which insinuated itself wherever it was not prac- persons who had bound themselves by contract to per- tically checked. Accordingly we find parliament avoid- form military services, being specially excepted. During ing for some time any distinct recognition of the prero- the Tudor dynasty, the declaratory limitations attempted gative of the crown, or the privileges of the subject, and by the old statutes were undoubtedly little respected by acting on the defensive against the former. Thus, by the crown, and forced levies were made on many occa- statute 1 Ed. III. c. 5, “ The king wills, that no man from sions, when the necessities contemplated by the acts could henceforth shall be charged to arm himself, otherwise than be brought forward as a nominal justification, without he was wont in the times of his progenitors kings of Eng- being minutely questioned. A statute of the year 1558 land; and that no man be compelled to go out of his shire (4 and 5 Phil, and M. c. 3) appears at first sight to give but where necessity requireth, and sudden coming of full sanction to the right of impressment; but an observa- strange enemies into the realm; and that it shall be done tion of the circumstances in which the act was to be en- as hath been used in times past for the defence of the forced, and reference to a previous act which it professed realm.” The seventh chapter of the same statute gives to amend, show that it was intended for the discipline of redress on complaints that commissioners appointed to raise those who had become soldiers, and to prevent their de¬ soldiers had been chargeable to the shires; and by the in- sertion. During the long parliament, by an act granting structions to the sheriffs in the 10th Ed. III. stat. ii. money the temporary power of impressing as many men as the so exacted is directed to be returned. More decided at- king and both houses of parliament might appoint (16 Car. tempts to amalgamate the assize of arms with the feudal I. c. 28), the limitations were again confirmed ; and it was force appear to have been opposed in 1351, when by 25 declared, that by the law of the realm the subject ought Ed. III. stat. v. c. 8, it was enacted that “ no man shall be not to be impressed or compelled to go beyond his county, constrained to find men of arms, hobelers nor archers, &c. in the same terms as the statute of the first of Ed- other than those who shall hold by such services, if it be ward III. not by common assent and grant made in parliament.” Such was the state of matters when, in the celebrated At an early period, the crown gradually enlarged its dispute between Charles I. and the parliament regarding military authority, by issuing commissions of array. These the right to command the militia, it was maintained on writs, which were at first probably mere authorities to In- the one hand that the preservation of the peace of the dividuals to use the royal name and influence in collecting country, and its protection from foreign invaders, were troops, came from practice to be viewed as emanating from the unalienable privileges of the crown, and involved the the prerogative. In that anxiety to avoid collision with right to command all armies, and to demand on all occa- the crown, which distinguishes many of the old acts of sions the military service of the lieges ; and, on the other, parliament, they are frequently alluded to without being that such privileges existed in no individual without the either sanctioned or condemned. A singular instance of consent of both houses of parliament; whilst it was urged, apparently intentional ambiguity occurs in 1 Ed. III. stat. first in the form of an ordinance, and next in that of a bill, ii. c. 15, which was avowedly passed for the relief of indi- that the king should consent to the militia being placed viduals, who, at the suggestion of false and evil counsel- in the hands of commissioners named by parliament. Al- lors,” had been prevailed on by “ duress” to come under though the statutes above referred to show that in mo- burdensome obligatiorls to perform military duties. The ments of danger the king was so far the guardian of the contracts are cancelled with a sort of oracular qualification, peace, that he was entitled to put himself at the head of evidently inserted as the nominal price of a real conces- the persons bound to keep themselves in readiness for such sion: “Considering that such writings were made to the occasions, and the practice had been undoubtedly still king’s dishonour, sithens that every man is bound to do more favourable to the prerogative, neither an act of the to the king as his liege lord all that pertaineth to him, legislature, nor any uninterrupted train of precedents, had without any manner of writing.” In the fifth year of given the monarch the unlimited military command which Henry IV. a statute was passed limiting the form and au- he arrogated. At an unfortunate time for the adjustment thority of commissions of array. It involves the anticipa- of such a question, it had to be settled between the con- tion of foreign invasion, empowers the commissioners in flicting branches of the legislature ; and Whitelocke at such circumstances to array and train all men-at-arms, least approached the truth, when he said he apprehended to cause all able-bodied men to arm themselves accord- “ that the power of the militia is neither in the king only, ing to their substance, to amerce those unable to bear nor in the parliament; and if the law hath placed it any arms in a similarly adjusted ratio, and to require the ser- where, it is both in the king and parliament, when they vices of persons so armed on the sea-shore, or elsewhere, join togetherthough the state of matters equivocally fl¬ at the moment of danger. It is singular that this statute, lustrated his remark, in continuation that “ it is a wise which forms the only legislative authority to which institution of our law not to settle this power any where, but Charles I. finally appealed in the celebrated struggle for rather to leave it in dubio, or in nubibus, that the people the command of the militia, has never been conceived of might be kept in ignorance thereof, as a thing not fit to be sufficient importance to be printed in any collection of the known nor to be pried into.’’ Arguments founded on pre¬ statutes, and seems to have been accidentally discovered in cedent and the nature of the constitution were at that junc- manuscript by some of the crown officers.1 It was indeed, ture, however, merely like the diplomatic manoeuvres pre- Vide Rush. Hut. Col. part iii. vol. i. G61-9. 70 MILITIA. Militia. ceding an international war. Each party was calculating its ' strength for the approaching conflict; and if their respective rights were so earnestly insisted on by either side, with any other view than that of colouring the real grounds of the rupture, it was that of securing the wavering by a show of adherence to constitutional principles. In a short time each party mustered its own forces in its own way. In the parliament which was summoned after the Re¬ storation, effectual means were taken by two statutes (13 Car. II. c. 6, and 13 and 14 Car. II. c. 3), which probably would not have been passed by the convention parlia¬ ment, to put an end to any doubts as to the prerogative on this point. It was declared, that “ the sole supreme government, command, and disposition of the militia, and of all forces by sea and land, and of all forts and places of strength, is, and by the laws of England ever was, the un¬ doubted right of his majesty and his royal predecessors and lieutenants and their deputies were empowered to charge their counties to provide horse and foot soldiers, according to a fixed scale of property. The system thus constructed was slightly amended in the years 1699, 1714, and 1743. In 1756, when the large standing force, which the po¬ sition of Britain rendered it expedient to keep up, was made more unpopular by the introduction of the Hanove¬ rian mercenaries, a bill to reconstruct the militia passed through the House of Commons under the auspices of Mr Charles Townshend and his friends, but was rejected in the House of Lords by 59 to 23. With some difficulty the measure was carried in 1757 ; but, though approved of by a large party, its practical enforcement frequently produced discontent and local disturbance. In 1762 the system was improved, and several acts were afterwards passed amending particular departments. In 1802, the militia laws of England and Scotland were consolidated by 42 Geo. III. c. 90 and 91; and these statutes, with that of 49 Geo. III. c. 120, applicable to Ireland, contain, with some partial amendments made by later acts, the law ap¬ plicable to the militia of the united kingdom. Before giv¬ ing such a brief selection from the many minute regula¬ tions prescribed by these statutes, as a work of general re¬ ference is expected to contain, we may be permitted to glance at the origin of the militias of Scotland and Ireland. In Scotland there seems never to have been, except in burghs, a national force for the defence of the citizens, like the Fyrd of the Saxons. The earliest acts of parlia¬ ment, however, enforce practice in the bow, of which the efficiency had been so dearly learned in the English wars; whilst periodical “ wapenshawings” are directed to be held, in which each individual should be armed upon a scale vaguely proportioned to his property.1 *. In time of war or rebellion, proclamations were issued, charging all sheriffs and magistrates of burghs, to direct the attendants of the respective wapenshawings to join the king’s host ;z and the criminal records contain many prosecutions for “ abiding from” the various “ raids,” which are generally settled by composition with the lord treasurer. During the civil wars of the seventeenth century, the army which had been brought into existence by the enthusiasm of the cove¬ nanters, was supported by levies and assessments appor¬ tioned by district committees of war appointed by parlia¬ ment, whose duties and powers were modelled on those of the commissioners of array in England. In 1662 (1 Car. II. 3, 27), the parliament made offer of20,000 foot and 2000 horse to be at his majesty’s sole disposal, and to be marched to any part of Scotland, England, or Ireland. This body constituted a regular standing army, the organization of 1 Acts, 1424, c. 18 and 44 ; 1425, c. 60 ; 1457, c. 64; 1491, c. 31 ; and 1540 c 85-91 , 3 See Irish State PaPers’ Punished by authority of government, ii. 477, &c. 1482, c. 90. which underwent some alterations in the years 1669, 1672, Militia, 1693, and 1695. From this last period, no legislative im¬ provements were made in the militia of Scotland until the year 1797, when the system established in England was partially extended to that part of the empire, though not without considerable local disturbance. In Ireland the predatory army of gallowglasses, which, even in times of comparative tranquillity, it was found necessary to keep constantly armed for the preservation or the enlargement of the pale, was supported to a small extent by supplies from England ; but it chiefly depended on exactions from the Anglo-Irish, made by a dexterous application of the many fines and petty tributes originally exigible by the native chiefs. To these the English add¬ ed the formidable exactions of coign and livery, wdrich embracing free quarters, and all that is generally taken under the sanction of that licence, were the frequent sub¬ ject of bitter complaint, though not much heeded by a government which expected that the conquest would at least support itself.3 In 1715, on occasion of the rebel¬ lion in Scotland, an act was passed by the Irish parlia¬ ment (2 Geo. I. c. 9) for raising a militia to consist of Pro¬ testants. Roman Catholics were subject to double rates; and all serviceable horses belonging to them might be seized and made use of, provided that within ten days the sum of L.5 (deducting the expense of seizure and keep- ing) was tendered to the owner of each as full payment. After several partial alterations, the militia laws were con¬ solidated by the Irish parliament in 1793 (33 Geo. III. c. 22) and 1795 (35 Geo. 111. c. 8), and accommodated to those of England in 1809. By the present constitution of the militia in the united kingdom, his majesty appoints lords-lieutenant in England, and governors in Ireland, to each county or province, with power to call out and train the militia annually, and to ap¬ point twenty or more deputy-lieutenants or governors, or other officers, subject to the royal approval. A deputy in England or Ireland requires, as his qualification, to be pro¬ prietor of real property worth L.200 a year, or heir appa¬ rent to an estate of twice that value. In Scotland he must possess, or be heir-apparent to, landed property to the ex¬ tent of L.400 Scotch of valued rent. In England a colonel must hold an estate of L.1000 a year, or be heir-apparent to one of L.2000; in Scotland he must hold or be heir- apparent to one of L.800 of valued rent; and in Ireland he must hold an estate of L.2000 a year, or be heir-appa¬ rent to one of L.3000. A lieutenant-colonel’s qualifica¬ tion is, in England, an annual estate of L.600, or an ap¬ parency of L.1200 ; in Scotland a valued rent of L.600 ; and in Ireland an estate of L.1200, or an apparency of L.1800. i he qualifications of the lower ranks are upon a corresponding scale, personal property being taken into consideration in those of lieutenants and ensigns. There are distinct qualifications, generally of a lower grade, for Wales, the Isle of Ely, Huntingdon, Monmouth, West- moreland, Rutland, Edinbui’gh, Dublin, Cork, Limerick, and those towns which are counties within themselves, and by ancient usage trained a separate militia. The mi¬ litias of London and the Tower Hamlets are regulated by separate acts (viz. 36 Geo. III. c. 92,37 Geo. III. c. 25 and i5, and 39 Geo. III. c. 92) ; and those of the Cinque Ports and their members are, in pursuance of ancient custom, eft to the administration of the warden. I he business of balloting for and calling out the mili- ia commences with the annual general meeting of the leutenancy of each county, when the next subdivision meeting is appointed, to which chief constables, or other M I L l%iUtia. officers, are required to direct constables or schoolmasters to return lists of all males between the ages of eighteen and forty-five in their respective parishes. Within four¬ teen days after requisition, the constable or schoolmaster leaves a schedule in each dwelling-house, to be filled up within fourteen days, with the names and designations of persons within the ages, and their claims of exemp¬ tion, if there be any, under a penalty of L.5. Within a month after serving the notices, the constables or school¬ masters make up and affix, to the church-doors, lists, men¬ tioning exemptions and incapacities, and notifying the times and places for the discussion of appeals. These are decided by two or more deputies at the subdivision meet¬ ings, and their decisions are final. The clerks of general meetings then transmit lists to the privy council, distin¬ guishing those liable to serve from those exempt. The men to be enrolled are chosen by ballot from each parish ; all who are not above four feet and five inches in height, or are not approved of on examination by a surgeon, being discharged, and others balloted for in their room. Those who do not personally appear, or send an approved sub¬ stitute to take the oath, are liable in a penalty of L.10. There are arrangements by which, with the consent of the inhabitants, volunteers, remunerated by parish assessments, may be substituted for balloted men. The persons exempted are, peers; commissioned officers of the other forces, whether on full or half-pay ; non-com¬ missioned officers and private men in the other forces ; persons serving, or who have served for four years, as commissioned officers in the militia; persons serving in the yeomanry or volunteers ; persons serving, or who have served at any time within a year past, in the local militia; resident members of the several universities ; clergymen of the establishments, and registered dissenting clergy¬ men ; parish schoolmasters ; articled clerks ; apprentices ; seafaring men; persons employed in his majesty’s docks, the Tower, Woolwich Warren, the gun-wharfs of Ports¬ mouth, and the stores under the direction of the Board of Ordnance; persons free of the company of watermen of the Thames ; any poor man with more than one child born in wedlock, in England; any man with more than two lawful children, and not possessing property to the value of L.50, in Scotland; and in Ireland, any poor man not wrorth L.IO, or who does not pay L 5 a year of rent, and has more than three lawful children under the age of fourteen. The number of private men apportioned amongst the different countries is, for England and Wales 40,963, for Scotland 7950, and for Ireland 21,616, making a total of 70,529 ; but this number has been increased by temporary acts. The privy council may, at the end of every period of ten years, alter the proportional numbers assigned to the respective counties; but this arrangement has been subject to alteration by temporary acts. The annual train¬ ing is, for such a period, not exceeding twenty-eight days, as his majesty may direct; and the calling out of the whole, or of any part, may be suspended by an order in council. The mutiny act and the articles of war apply to the militia so called out, with the ordinary constitutional limitation, that no punishment can extend to life or limb. I here are separate provisions for recovering deserters, &c. In the case of anticipated invasion or rebellion, his majesty may direct each lord-lieutenant, or, in the case of the death or absence of a lord-lieutenant, any three of his deputies to embody the militia with all convenient speed, the occasion being first notified in parliament, if it is as¬ sembled ; and if not, declared in council, and published by proclamation. By a similar proceeding, a supplement¬ ary militia may be raised, to the extent of one half of the fixed number. The regiments are liable to be marched to any part of the united kingdom; but no Irish regiment MIL 71 can be compelled to serve in Britain, or British regiment Milk, in Ii eland, longer than two years at one time ; nor must-v-~- above a fourth part of the British militia be employed in Ireland, or a third of the Irish militia in Britain. These restrictions, adopted in 1811, when the militias of the two islands were united under the title of the Militia of the United Kingdom, were partially suspended in 1813 ; and during the time of actual invasion or rebellion they may be disregarded. Hie old principle, that the militia cannot be compelled to serve out of the kingdom, is still adhered to, although in 1813 (54 Geo. III. c. 1) provision was made for accepting the service of militiamen and officers, to be formed into provisional regiments, and to co-operate with the regular forces. At previous periods, considerable num¬ bers of militiamen had been drafted into the line, the losses of the militia regiments being made up by temporary acts, which slightly increased their original quotas. By 48Geo. III. c. Ill and 150, the celebrated local mi¬ litia was, in 1808, appointed in England and Scotland, being limited in each county to “ six times the original quota or proportion of the original quota of militia.” In 1812, two new acts were passed (52 Geo. III. c. 38 and 68), which apportioned the numbers of men to the respective shires in England and Scotland, but contained regulating provi¬ sions which tended to make the local militia and volun¬ teers together amount to six times the number of the ori¬ ginal militia contingents. When these forces were added to the two hundred thousand men allowed to be trained by Mr W indham s act (46 Geo. III. c. 90), the citizen army, at the disposal of government in Great Britain, amount¬ ed, independently of the militia, &c. of Ireland, and of temporary augmentations, to very nearly five hundred thousand men. In 1811, the effective strength of the re¬ gular militia was 77,424 private men, whilst that of the local militia was 213,609. In 1819, the disembodied mili¬ tia of Britain and Ireland, calculated from the estimates of' the year, amounted in round numbers to 71,200; and in 1829, it amounted to 70,082, private men and drummers. The balloting, enrolling, and exercising of the militia now only takes place at occasional periods, an act being generally passed during each session, suspending their an¬ nual recurrence. By 10 Geo. IV. c. 10, the staff of the dis¬ embodied militia was reduced; and, according to a recent return, amounted, after the reduction, to 127 adjutants, 127 serjeant-majors, 1692 serjeants, 82 drum-majors, and 669 drummers. A further reduction was authorized by 5 and 6 WiL IV. c. 37, and made by an order in council of the 10th October 1835. It appears from a return to the House of Commons of the 7th July 1836, that the staff of the militia of the united kingdom at present receiving pay amounts to 119 adjutants, 123 serjeant-majors, and 845 serjeants. The cost of the militia of the united king¬ dom, including the half-pay of officers and non-commission¬ ed officers, during each of the last three quarters of the year ending 31st March 1836, was, for the quarter ending 30th September 1835, L.25,985. 8s. 5|-d; for that ending 31st December 1835, L.37,139.8s. 4d.; and for that ending 31st March 1836, L.32,219. 16s. lOd. According to the estimates for 1836—37, the number of private men is, in Great Britain, 50,888 ; in Ireland 18,525, (m. m. m. m.) MILK, a well-known fluid, prepared by nature in the breasts of women, and the udders of other animals, for the nourishment of their young. According to Dr Cullen, milk is a connecting and inter¬ mediate substance between animals and vegetables. It seems to be immediately secreted from the chyle, both being a white liquor of the same consistence ; it is most co¬ piously secreted after meals, and is of an acescent nature. In most animals which live on vegetables the milk is aces¬ cent ; and it is uncertain whether it is not so likewise in carnivorous animals. But, whatever there be in this, it is 72 M I L K. M ilk. certain that the milk of all animals which live on vegetables “~v^“^is acescent. Milk being derived from the chyle, we thence infer its vegetable nature ; for in those who live on both promiscuously, a greater quantity ol milk is obtained, and more quickly, from the vegetable than from the animal food. Milk, however, is not purely vegetable, though we have a vegetable liquor which resembles it in taste, consistence, colour, acescency, and the separability of the oily part, viz. an emulsion of the nuces oleosce and farinaceous substances. But these want the coagulable part of milk, which seems to be of an animal nature, approaching to that of the co¬ agulable lymph of the blood. Milk, then, appears to be of an intermediate nature between chyle taken up from the intestines and the fully elaborated animal fluid. Its contents are of three kinds. First, there is an oily part, which, whatever may be said concerning the origin of other oils in the body, is certainly immediately derived from the oil of the vegetables taken into the stomach ; for with these it agrees very exactly in its nature, and would do so entirely, if we could separate it fully from the coagulable part. Another mark of their agreement is the separability, which proves that the mixture has been lately attempted, but not fully performed. Secondly, besides this oily, there is a proper coagulable part. And, thirdly, much water accompanies both, in which there is dissolved a sa- lino-saccharine substance. These three can be got sepa¬ rate in cheese, butter, and whey; but never perfectly so, a part of each being always blended with every other part. Nothing is more common, from what has been said of its immediate nature, than to suppose that it requires no assi¬ milation ; and hence has been deduced the reason of its exhibition in the most weakly state of the human body. But wherever we can examine milk, we always find that it coagulates, suffers a decomposition, and becomes acescent. Again, infants, who feed entirely on milk, are always trou¬ bled with eructations, which every body observes are not of the same quality with the food taken ; and therefore it appears, that, like all other food, milk turns naturally aces¬ cent in the stomach, and only enters the chyle and blood in consequence of a new recomposition. It approaches then to the nature of vegetable aliment, but is not capable of its noxious vinous fermentation, and therefore has an ad¬ vantage over it. Neither, from this quality, is it like ani¬ mal food, heating in the stomach, and productive of fever, though at the same time, from its quantity of coagulable matter, it is more nourishing than vegetables. Milk is the food most universally suited to all ages and states of the body; but it seems chiefly designed by na¬ ture as the food of infants. When animals are" in the foetal state, their solids are a perfect jelly, incapable of an assi- milatory power. In such state nature has perfectly assimi¬ lated food, as the albumen ovi in the oviparous, and in the viviparous animals certainly somewhat of the same kind, as it was necessary that the vessels should be filed with such a fluid as would make way for an after assimilation. When the infant has attained a considerable degree of firmness, as when it is separated from the mother, such a degree of weakness still remains as makes somewhat of the same in¬ dication necessary; it behoves the infant to have an alka¬ lescent food ready prepared, and, at the same time, its noxious tendency to be avoided. Milk then is given, which is alkalescent, and, at the same time, has a sufficient quan¬ tity of acidity to correct the alkalescent quality. As the body advances in growth, and the alkalescent tendency is greater, the animal, to obviate that tendency, is led to take vegetable food, as more suited to its strength of assi¬ milation. Dr Cullen observes, that milk is suited to almost all tem¬ peraments ; and it is so to stomachs disposed to aces- cency, more than tnose substances which have undergone the vinous fermentation ; nay, it even cures the heartburn, checks vinous fermentation, and precipitates the lees, when, by renewal of fermentation, the wine happens to be fouled. It, therefore, very properly accompanies a great deal of vegetable aliment; although sometimes its acescency is troublesome, either from the large portion taken in, or from the degree of it; for, according to certain unaccount¬ able circumstances, different acids are formed in the sto¬ mach in different states of the body, as in a health}' body a mild one, and in the hypochondriac disease one of a very acrid quality. When the acidity of milk is carried to a great degree, it may prove remarkably refrigerant, and oc¬ casion cold crudities, and the recurrence of intermittent fevers. To take the common notion of its passing un¬ changed into the blood, it can undergo no solution. But if we admit its coagulum in the stomach, then it may be reckoned amongst soluble or insoluble foods, according as that coagulum is more or less tenacious. Formerly ren¬ net, which is employed to coagulate milk, was thought an acid ; but, from late observations, it appears, that, if it be an acid, it is very different from other acids, and that its coagulom is stronger than that produced by acids. It has been imagined that a rennet, which causes coagulation of milk, is to be found in the stomachs of all animals ; but according to Dr Cullen, the coagulation of milk seems to be owing to a weak acid in the stomach, the relics of vege¬ table food, inducing, in healthy persons, a weak and solu¬ ble coagulum; but in different stomachs this may be very different, in some becoming heavy and less soluble food, and may even be evacuated in a coagulated undissolved state both by stomach and stool. As milk is acescent, it may be rendered purgative by mixture with the bile. Some examples of this have been remarked. But it is more commonly reckoned amongst those foods which occasion costiveness. Hoffman, in his experiments upon milk, ascertained that all kinds of it contained much water; and when this was dissipated, he found the residuums very different in their solubility. But we must not thence conclude, that the same insolubility takes place in the stomach; for extracts made from vegetables with water are often very insoluble substances, and hardly diffusible through water itself. In Hoffman’s extracts of milk, therefore, somewhat of the same kind might have appeared; and these substances, which in their natural state were not so, might appear very insoluble. However, we may allow that milk is always somehow insoluble in the intestines, as it is of a drying nature, and as cheese is very costive. And this effect shows that milk is always coagulated in the stomach; for if it remained fluid, no fa?ces would be produced, whereas sometimes very hard ones are observed. In the blood-ves¬ sels it may, from its animal nature, be considered as nutri¬ tious ; but when we consider its vegetable contents, and acescency in the prirncc vice, we find that, like animal food, it does not excite that degree of fever in the time of di¬ gestion, and that from its acescency it will resist putrefac¬ tion. Hence its use in hectic fevers, which, whatever be their cause, appear only to be exacerbations of natural feverish paroxysms, which occur twice every day, com¬ monly after meals, and at night. To obviate these, there¬ fore, we give such an aliment as produces the least exa¬ cerbation of these fevers ; and of this nature is milk, on account of its acescent vegetable nature. I here also appears something peculiar to milk, which requires only a small exertion of the animal powders in or¬ der to its assimilation ; and besides, in hectic complaints, there is wanted an oily, bland food, approaching to the animal nature; so that upon all these accounts milk is a diet peculiarly adapted to them, and, in general, to most convalescents, and to those of inflammatory temperaments. I he milks of women, mares, and asses, in a great mea- sme agree in their qualities, being very dilute, having little Milk. MILK. 73 Milk, solid contents, and these, when evaporated to dryness, be- ■'ing very soluble, and containing much saccharine matter of a very ready acescency, and their coagulum being ten¬ der and easily broken down. From this view they have less oil, and seem to have less coagulable matter than the rest. The milks of cows, sheep, and goats, agree in possess¬ ing qualities opposite to those just mentioned ; but here there is somewhat more of gradation. Cow’s milk comes nearest to the former. Goat’s milk is less fluid, less sweet, less flatulent, and has the largest proportion of insoluble part after coagulation, and indeed the largest proportion of coagulable part; its oily and coagulable parts are not spontaneously separable, and it never throws out a cream, or admits of butter to be readily extracted from it. Hence the virtues of these milks are obvious, being more nourish¬ ing, though at the same time less easily soluble in weak stomachs, than the three kinds above mentioned, less aces¬ cent, and more rarely laxative, and peculiarly fitted for the diet of convalescents without fever. The other kinds again are less nourishing, more soluble, more laxative, (rom being more acescent, and adapted to convalescents with fever. These qualities in particular milks are considerably di¬ versified by different circumstances. First, different ani¬ mals living on the same diet give a considerably different milk ; for there seems to be something in the constitution, abstracting from the aliment, which constitutes a consi¬ derable diversity of milk, not only in the same species of animals, but also in the same animal, at different ages, and at different intervals after delivery. This also applies to the choice of nurses. Secondly, milk follows the nature of the aliment more than any other juice in the human body, being more or less fluid and dilute, and more or less solid and nourishing, in proportion as these qualities are more or less in the aliment. The nature of the aliment differs according to its time of growth, old grass being always found more nourishing than young. Aliment, too, is al¬ ways varied according to the season, as that is warm or dry, moist or cloudy. The milk of each particular kind of animal is fitter for particular purposes, when fed on proper food. Thus the cow delights in the succulent herbage of the valley; if the sheep be fed there he certainly rots, but on the higher and more dry side of the mountain he feeds pleasantly and healthily; whilst the goat never stops near the bottom, but ascends to the craggy summit. The milks of these ani¬ mals, therefore, are always best upon their proper soil; and that of goats is best in a mountainous country. In a dis¬ sertation of Linnaeus, we find many observations concern¬ ing the diversity of plants on which each animal chuses to feed. All the Swedish plants which could be collected to¬ gether were presented alternately to domestic animals, and then it appeared that the goat lived on the greatest va¬ riety, and even on many which were poisonous to the rest; and that the cow chose the first succulent shoots of the plant, and neglected the fructification, which was prefer¬ red by the goat. Hence may be deduced rules concern¬ ing the pasturage of different animals. Thus farmers find, that, in a pasture which was only fit to feed a certain num¬ ber of sheep, an equal number of goats may be introduced, whilst the sheep are no less nourished than before. It is not easy to assign the difference between milk fresh drawn and that detained in the open air for some time ; but certainly there is some material one, otherwise nature would not have directed infants universally to sucking; and indeed it seems better fitted for digestion and nou¬ rishment than the other. Physicians have supposed that this depended on the evaporation of some spirit; but Lin¬ naeus cannot conceive any thing except common water here; and besides, these volatile parts can hardly be nutritious. A more plausible account seems deducible from mixture. VOL. xv. Milk newly drawn and recently mixed is exposed to sponta- Milk, neons separation, a circumstance hurtful to digestion; none of the parts being, by themselves, so easily assimilated as when they are all taken together. Hence milk newly drawn is more intimately blended, and therefore is most proper to weak persons and to infants. Another difference in the use of milk exposed for some time to the air, is taking it boiled or unboiled. Physicians have generally recommended the former; but the reason is not easily assigned. Perhaps it may be that milk kept for some time exposed to the air has gone so far towards a spontaneous separation ; whereas the heat thoroughly blends the whole, and hence its resolution is not so easy in the stomach; and thus boiled milk is more costive than raw', and gives more faeces. Again, when milk is boiled, a considerable quantity of air is detached, as appears from the froth on the surface; and air is the chief instrument of fermentation in bodies ; so that after this process it is not liable to acescency. For these reasons it is proper for the robust and vigorous. Another difference of milk is, according as it is fluid or coagulated. The coagulated is of two kinds ; either as in¬ duced by rennet, or occasioned by the natural acescency of the milk. The former preparation makes the firmer and less easily soluble coagulum ; but, when taken with the whey unseparated, it is less difficult of solution, though more so than any other coagulum in the same case. Many nations use the latter form, which is more easily soluble, but very acescent, and therefore, in point of solution, should be confined to the vigorous, or to those who live on alka¬ lescent food; in fact, the Laplanders use it as their chief acescent condiment. From the same considerations it is more cooling, and in its other effects it is similar to all other acescent vegetables. Milk by evaporation yields a sweet saline matter, of which Dr Lewis gives the following proportions : Twelve Ounces of Cow’s milk... Goat’s milk... Human milk. Ass’s milk.... Left of Dry Matter. 13 drachms. 121 8 8 From which Water extracted a Sweet Saline Substance amounting to 1| drachm. L 6 6 The saline substance extracted from ass’s milk was white, and as sweet as sugar ; that of the others was brown or yellow, and considerably less sweet; that from cow’s milk had the least sweetness of any. On distilling twelve quarts of milk in balneo marice, at least nine quarts of pure phlegm were obtained. The liquor which afterwards arose was acidulous, and by de¬ grees grew sensibly more and more acid as the distillation was continued. After this came over a little spirit, and at last the empyreumatic oil. The remaining solid matter adhered to the bottom of the retort, in the form of ele¬ gant shining black flowers, which being calcined and elix- ated, yielded a portion of fixed alkaline salt. Milk set in a warm place throws up to the surface an unctuous cream, from which, by agitation, the butter is easily separated. The addition of alkaline salts prevents this separation, not, as some have supposed, by absorbing an acid from the milk, but by virtue of their property of intimately uniting oily bodies with watery substances. Sugar, another intermedium between oils and water, has this effect in a greater degree, though that concrete is by no means alkaline, nor an absorbent of acids. The sweet saccharine part of the milk remains dissolved in the whey after the separation of the curd or fromagi- nous matter, and may be collected from it in a white crys- K 74 M I L K. Milk. talline form, by boiling the whey till all remains of the curdled substance have fallen to the bottom; then filter¬ ing, evaporating it to a due consistence, setting it to shoot, and purifying the crystals by solution in water and a se¬ cond crystallization. Much has been said of the medici¬ nal virtues of this sugar of milk, but it does not seem to have any that are considerable. It is from cow’s milk that it has been generally prepared ; and the crystals obtained from this kind have but little sweetness. When milk is suffered to coagulate spontaneously, the whey proves acid, and on standing grows more and more so until the putrefactive state commences. Sour whey is used as an acid, preferable to the directly vegetable or the mineral acids, in some of the chemical arts, as for dissolv¬ ing iron in order to stain linen and leather. In the bleach¬ ing of linen this acid was commonly made use of for dis¬ solving and extracting the earthy particles left in the cloth by the alkaline salts and lime employed for cleansing and whitening it. Butter milk is preferred to plain sour milk or sour whey, being supposed to give the cloth a yellow colour. Dr Home, in his treatise on this subject, recom¬ mends water acidulated with sulphuric acid, in the propor¬ tion of about half an ounce, or at most three quarters of an ounce, to a gallon, as preferable in many respects to the acid of milk, or that of any directly vegetable substance. He observes, that the latter are often difficult to be pro¬ cured, abound with oleaginous particles, and hasten to corruption, whilst the vitriolic acid is cheap and pure, without any tendency to putrify; that milk takes five days to perform its office, whilst the vitriolic acid does it in as many hours, perhaps in as many minutes ; and that this acid contributes also to whiten the cloth, and does not make it weaker though the cloth be kept in it for months. He states, that acids, as well as alkalies, extract an oily mat¬ ter from the cloth, and lose their acidity and alkalinity. Since this treatise appeared, the use of sour milk has been entirely superseded by sulphuric acid. It is observable, that ass’s milk has a great tendency, on standing for a little time, to become thick and ropy. In the Breslau collection for the year 1720, there is a re¬ markable account of milk which had grown so thick and tenacious as to be drawn out into long strings. New cow’s milk, suffered to stand for some days on the leaves of butterwort or sun-dew, becomes uniformly thick, slippery, and coherent, and of an agreeable sweet taste, without any separation of its parts. Fresh milk added to this is thickened in the same manner, and this successive- ly. In some parts of Sweden, milk is thus prepared for food. New milk has a certain glutinous quality, in consequence of which it is used for joining broken stone ware. There is a far greater tenacity in cheese properly prepared. Milk, when examined by a microscope, appears com¬ posed of numerous globules swimming in a transparent fluid. It boils in nearly the same degree of heat with common water ; some sorts rather sooner, and others a lit¬ tle later. After boiling it has less tendency to become sour than in its natural state. It is coagulated by acids both mineral and vegetable, and by alkalies both fixed and vola¬ tile. The coagulum produced by acids falls to the bottom of the serum ; that made by alkalies swims on the surface, commonly forming a thick coriaceous skin, especially with volatile alkalies. The serum, with alkalies, proves green or sanious ; with acids, it differs little in appearance from the whey which separates spontaneously. The coagulum formed by acids is dissolved by alkalies, and that formed by alkalies is redissolved by acids ; but the milk does not in either case resume its original properties. It is coagu¬ lated by most of the middle salts, the basis of which is an earth or a metallic body, as solution of alum, fixed sal-am¬ moniac, sugar of lead, green and blue vitriol; but not by the chalybeate or purging mineral waters, nor by the bit¬ ter salt extracted from the purging waters. Amongst the neutral salts which have been tried, there is not one that produces any coagulation. They all dilute the milk, and make it less disposed to coagulate with acids or alkalies. Nitre seems to have this effect in a greater degree than the other neutral salts. It is instantly coagulated by high¬ ly rectified spirit of wine, but scarcely by a phlegmatic spirit. It does not mingle with expressed oils. All the coagula are dissolved by gall. It has generally been supposed by medical authors, that the milk of animals is of the same nature with chyle, and that the human milk always coagulates in the stomach of infants ; but in a dissertation upon the subject published by Mr Clarke, member of the Royal Irish Academy, we find both these positions controverted. According to him, women’s milk, in a healthy state, contains no coagulable, mucilaginous, or fromaginous principle, in its composition, or it contains so little, that it cannot admit of any sensible proof. Dr Rutty states, that it does not afford even a sixth part of the curd which is yielded by cow’s milk; and Dr Young denies that it is at all coagulable either by ren¬ nets or acids. This is confirmed by Dr Ferris, who, in the year 1782, gained the Harveian prize medal by a dissertation upon milk. Mr Clarke informs us, that he made a great number of experiments upon women’s milk, with a view to determine this point. He made use of ardent spirits, all the different acids, infusions of infants’ stomachs, and px-o- cured the milk of a great many different women; but in no instance,-excepting one or two, did he perceive any thing like curd. This took place in consequence of a spon¬ taneous acescency ; and only a small quantity of soft flaky matter was formed, which floated in the serum. This he looked upon as a morbid appearance. The general opinion that women’s milk is coagulable has arisen from the single circumstance that infants fre¬ quently vomit the milk which they suck in a state of appa¬ rent coagulation. This greatly perplexed Dr Young, who, after having tried in vain to coagulate human milk artifi¬ cially, concluded that the process took place spontaneous¬ ly in the stomach; and that it would always do so if the milk were allowed to remain in a degree of heat equal to about 96° of Fahrenheit. Mr Clarke took equal quantities of three different kinds of milk, and put them into bottles slightly corked, and these bottles into water, the tempera¬ ture of which was kept up by a spirit of wine lamp as near as possible to 96° of Fahrenheit; but after frequently ex¬ amining each bottle during the course of the experiment, at the expiration of several hours there was not the small¬ est tendency towards coagulation to be perceived in any of them. I he cream was only thrown to the surface in a thick and adhesive form, and entirely separated from the fluid below, which had something of a grey and wheyish ap¬ pearance. As the matter vomited by infants is sometimes more adhesive than we can suppose cream to be, Mr Clarke supposed that the curd might be so entangled with tlie cream as to be with difficulty separated from it; but having collected a quantity of rich cream from the milk of different women, he repeated the experiment with precise¬ ly the same result, not being able in any one instance to produce the smallest quantity of curd. To determine, xowever, what effects might be produced upon milk by the stomach of an infant, Mr Clarke made the following expe- nment. Having taken out the stomach of a foetus which ,.a j .en, deprived of life by the use of instruments, he in- tused it in a small quantity of hot water, so as to make a s rong infusion. He added a tea-spoonful of this infusion to equaf quantities of cow’s and human milk, the consequence o w nc i was, that the cow’s milk was firmly coagulated in a saoi t time, but tiie human milk was not altered in the least; neither was the least coagulation produced by adding a second and a third spoonful to the human milk. “ Upon Milk MILK Milk, the whole, then,” says he “ I am persuaded it will be found 'that human milk, in a healthy state, contains little or no curd, and that the general opinion of its nature and pro¬ perties is founded upon fallacious analogy and superficial observations made on the matter vomited by infants. We may presume, that the cream of women’s milk, by its in¬ ferior specific gravity, will swim on the surface of the con¬ tents of the stomach ; and being of an oily nature, that it will be of more difficult digestion than any other consti¬ tuent part of milk. When an infant, then, sucks very plentifully, so as to over-distend the stomach, or labours under any weakness in the powers of digestion, it can¬ not appear unreasonable to suppose that the cream shall be first rejected by vomiting. Analogous to this, we know that adults affected with dyspepsia often bring up greasy fluids from the stomach by eructation, and this especially after eating fat meat. We have, in some instances, known this to blaze, when thrown into the fire, like spirit of wdne or oil.” Of this opinion he derives a confirmation from the observation, that curds vomited by infants of a few days old are yellow, whilst in the course of a fortnight or three weeks they become white. This he accounts for from the yellow colour of the cream thrown up by the milk of women during the first four or five days after delivery. Mr Clarke likewise controverts the common opinion, that human milk is so prone to acidity that a great number of the diseases of children are to be accounted for from that cause. “ Whoever,” says he, “ takes the trouble of attentively comparing human milk with that of ruminant animals, will soon find it to be much less prone to run into the acescent or acid process. I have very often exposed equal quantities of human and cow’s milk in degrees of tem¬ perature varying from the common summer heat, or 65°, to 100° ; and I have constantly found that cow’s milk acquires a greater degree of acidity in thirty-six hours than the human did in many days. Cow’s milk becomes offensive¬ ly putrid in four or five days ; a change which healthy hu¬ man milk, exposed in the same manner, will not undergo in many weeks, nay, sometimes in many months. I once kept a few ounces of a nurse’s milk, delivered about six or seven days, for more than two years in a bottle moderate¬ ly corked. It stood on the chimney-piece, and was fre¬ quently opened to be examined. At the end of this pe¬ riod, it showed evident.marks of moderate acidity, whe¬ ther examined by the taste, smell, or paper stained with vegetable blues or purples ; the latter it changed to a flo¬ rid red colour ; whereas cow’s milk kept a few days chang¬ ed the colour of the same paper to a green, thereby clear¬ ly showing its putrescent tendency.” He next proceeds to consider the probability there is of milk becoming so frequently and strongly acid as to oc¬ casion most of the diseases of infants. He begins with an attempt to show that the phenomena commonly regarded as indications of acrimony are by no means certain. Cur¬ dled milk has already been shown to be no sign of acidi¬ ty ; and the other appearance, which has commonly been thought to be so certain, namely, green faeces, is, in the opinion of Mr Clarke, equally fallacious. In support of this he quotes a letter from Dr Sydenham to Dr Cole, in which the former says, that the green matter vomited by hysterical women is not any proof of acrid humours being the cause of that disease, for sea-sick people do the same. The opinion that green faeces are an effect of acidity, proceeds upon the supposition that a mixture of bile with an acid produces a green colour ; but it is found that the vegetable acid, which only can exist in the human body, is unable to produce this change of colour, though it can be effected by the strong mineral acids. As nothing equi valent to any of these acids can be supposed to exist in the bowels of infants, we must therefore adopt some other method of accounting for the green faeces frequently eva¬ cuated by them. “ Why should sour milk, granting its Milk, existence, give rise to them in infants, and not in adults ? Have butter-milk, summer fruits of the most acescent kind, lemon or orange juice, always this effect in adults by their admixture with bile? This is a question which, I believe, cannot be answered in the affirmative.” Upon the whole, Mr Clarke considers the disease of aci¬ dity in the bowels, though so frequently mentioned, as by no means common. He owns, indeed, that it may some¬ times occur in infancy as well as in adult age, from weak¬ ness of the stomach, costiveness, or improper food ; and an indubitable evidence is afforded by faeces which stain the blue or purple colour of vegetables to a red, though nothing can be inferred with certainty from the colour or smell. He then proceeds to state several reasons for his opi¬ nion, that the greater number of infantile diseases are not owing to acidity. First, women’s milk, in a healthy state, contains little or no coagulable matter or curd. Secondly, it shows less tendency out of the body to become acescent than many other kinds of milk. Thirdly, the appearances which have been generally supposed to characterize its acidity do not afford satisfactory evidence of such a morbid cause. Fourthly, granting this to be the case, we have plenty of mild absorbents, capable of destroying all the acid which can be supposed to be generated in the bowels of an in¬ fant ; yet many children are observed to die in consequence of these diseases, which are supposed to arise from acidity. Fifthly, though the milk of all ruminant animals is of a much more acescent nature than that of the human species, yet the young of these animals never suffer any thing like the dis¬ eases attributed to acidity in infants. Sixthly, history in¬ forms us that whole nations use sour curdled milk as a considerable part of their food, without feeling any incon¬ venience ; which, however, must have been the case if aci¬ dity in the stomach were productive of such deleterious effect as has been supposed. This reasoning appears to be very plausible, and nothing has as yet been offered to contradict it. In a memoir by MM. Parmentier and Deyeux, members of the Royal College of Pharmacy in Paris, we have an ac¬ count of a great number of experiments on the milk of asses, cows, goats, sheep, and mares, as well as women. The expe¬ riments on cow’s milk were made with a view to determine whether any change was produced in the milk by the dif¬ ferent kinds of food eaten by the animal. For this pur¬ pose some were fed with the leaves of maize, others with cabbage, others with small potatoes, and others with com¬ mon grass. The milk of those fed with the maize was ex¬ tremely sweet; that from the potatoes and common grass was much more serous and insipid; and that from the cabbages proved the most disagreeable of all. By distil¬ lation only eight ounces of a colourless fluid were obtain¬ ed from as many pounds of each of these milks; that ob¬ tained from those which fed upon grass had an aromatic fla¬ vour ; whilst a disagreeable one resulted from cabbage, and none at all from the potatoes and maize. This liquid be¬ came fetid in the space of a month, whatever substance the animal had been fed with, acquiring at the same time a viscidity, and becoming tui'bid ; that from cabbage gene¬ rally, but not always, becoming first putrid. All of them separated a filamentous matter, and became clear on being exposed to the heat of 25° of Reaumur’s thermometer. In the residuum of distillation no difference whatever could be perceived. As the only difference therefore existing in cow’s milk consists in the volatile part, our authors con¬ clude that it is improper to boil milk either for common or medicinal purposes. They observed also that any sud¬ den change of food, even from a w;orse to a better kind, was attended by a very remarkable diminution in the quan¬ tity of milk. The residuum of the distillation yielded, in a strong fire, a yellow oil and acid, a thick and black em- 76 MIL Milk, pyreumatic oil, a volatile alkali, and towards the end a quantity of inflammable air, and at last a coal remained containing some fixed alkali with muriatic acid. On agitating in long bottles the cream from the milk of cows fed with different substances, all of them were form¬ ed into a kind of half-made butter, of which that formed from the milk of maize was white, firm, and insipid, that from potatoes was softer and more pinguedinous, and that from common grass was the best of all. Cabbage, as in other cases, gave a strong taste. In the course of these experiments, an endeavour was made to determine whether butter is actually contained in the cream, or whether it be a chemical production of the operation of churning. They could not find any reason absolutely satisfactory on either side, but incline to the lat¬ ter opinion; because when cream hasbeen allowed to remain amongst the milk, and the whole curdled promiscuously, fat cheese, without any butter, is produced. The oily parts cannot be separated into butter either by acids or any other means than churning; even the artificial mixture of oil with the cream is insufficient for the purpose. The serum of milk was reduced by filtration to a clear and pellucid liquor; and, by mixture with fixed alkali, it deposited a portion of fromaginous matter which had been dissolved in the whey. The sugar of milk was also found in this liquor. In these experiments upon the milk of various animals, it was found that that of asses yielded by distillation an insipid liquor, and deposited a liquor similar to the lymph of cow’s milk. This kind is coagulated by all the acids, but not into an uniform mass, exhibiting only the appear¬ ance of distinct flocculi. It affords but little cream, which is with difficulty converted into a soft butter, that soon becomes rancid. It has but a small quantity of saccharine particles, and these are often mixed with muriatic selenite and common salt. Goat’s milk has a thick cream, which is agreeable to the taste; and the milk itself may be pre¬ served longer in a sound state than any other species, the scum on its surface being naturally convertible into palat¬ able cheese. It is easily made into firm butter, which does not soon become rancid, and has a good flavour. The butter-milk contains a large quantity of fromaginous mat¬ ter, which readily coagulates; but it has still less saccha¬ rine matter than that of asses. Sheep’s milk can scarcely be distinguished from that of a cow, and easily parts with its cream by standing. It is of a yellow colour, of an agreeable flavour, and yields a great proportion of butter; but this is not solid, and soon becomes rancid. Mare’s milk is the most insipid and least nutritious of any, notwithstand¬ ing which it has been much recommended for weak and consumptive patients. It is probable that, in such cases, it proves efficacious by being more consonant than any other to the debilitated powers of digestion. It boils with a smaller fire than any other kind of milk, is easily coagu¬ lated, and the distilled water does not so soon change its nature. It has but a small quantity of fromaginous matter, and very few oily particles. The cream cannot be made into butter; and the whey contains about as much su«ar as cow’s or goat’s milk. It has also been remarked, that in order to augment the quantity, as well as to improve the quality, of the milk of animals, they should be well fed, their stalls kept clean, and their litter frequently renewed. They should be milked at stated hours, but not drained; and great atten¬ tion should be paid to the breed, because inferior cattle are maintained at as great expense as the most valuable kinds. No change ought to be made in the food; although, if the milk be employed for medicinal purposes, it may^be improved by a proper mixture of herbs. In their experiments on women’s milk, MM. Parmen- tier and Deyeux differ somewhat from Mr Clarke. They M I L first tried the milk of a woman who had been delivered four Milk months before, and observed that, after the cream had been || separated, the other part appeared of a more perfect white, Finl¬ and that it could not be coagulated either by vinegar or mineral acids, a circumstance which they attributed to a superabundance of serum. But they found that in pro¬ portion to the age of the milk it was more easily coagu- lable ; and this was confirmed by experiments made upon the milk of twenty nurses. Its coagulability was not in¬ creased by heat. The cream, by agitation, formed a vis¬ cid unctuous matter, which, how’ever, could not be changed into perfect butter; but they found it extremely difficult to determine the proportions of the various component parts of human milk, as it differs remarkably, not only in different subjects, but in the same subject at different times. In a nurse aged about thirty-two years, who was extremely subject to nervous affections, the milk was one day found almost quite colourless and transparent; in two hours afterwards, a second quantity drawn from the breast was viscid like the white of an egg; and in a short time it became whiter, but did not recover its natural colour until the evening. It was afterwards found that these changes were occasioned by the woman having in the mean time had some violent hysterical fits. Milk of Vegetables. For the same reason that the milk of animals may be considered as a true animal emulsient, the liquors of vegetables may be termed vegetable milks. Accordingly emulsions made with almonds are commonly called milk of almonds. But besides this vegetable milk, which is in some measure artificial, many plants and trees contain naturally a large quantity of emulsive or milky juices. Of this kind are lettuce, spurge, fig-tree, and the tree which furnishes the elastic American resin. The milky juices obtained from all these vegetables derive their whiteness from an oily matter, mixed and undissolved in a watery or mucilaginous liquor. Most resinous gums are originally such milky juices, which afterwards be¬ come solid by the evaporation of their more fluid and vo¬ latile parts. MILKY WAY, or Via Lactea. See Astronomy. MILL, a machine for grinding corn and other kinds of grain. There are various kinds of mills, according to the different methods of applying the moving power, as water¬ mills, wind-mills, mills worked by horses, and others. See Mechanics. I he first obvious method of reducing corn into flour for bread would be by the simple expedient of pounding ; and for ages this was the only one practised by the various de¬ scendants of Adam. The same method continued in use amongst the Romans until after the reign of Vespasian. But the process was very early improved by the applica¬ tion of a grinding power, and the introduction of mill¬ stones. This, like most of the common refinements in do¬ mestic life, was probably the invention of the antediluvian world ; it certainly was practised in some of the earliest ages after the Deluge ; and, like most of them, it was equal¬ ly known in the East and the West. Hence the Gauls and Britons appear to have been familiarly acquainted with the use of hand-mills before the time of their submis¬ sion to the Romans ; the Britons particularly distinguish¬ ed them, as the Highlanders do at present, by the simple appellations of querns, carnes, or stones. To these the Ro¬ mans added the very useful invention of water-mills. Fot this discovery the world is indebted to the genius of Italy; and, at the conquest of Lancashire, the machine was not uncommon in the country. This the Romans in¬ troduced along with their other refinements. The British appeUation of a water-mill suggests this of itself; the meUn of the Welsh and Cornish ; the mull, meill, and meb* of the Armoncans; and the Irish muilean and muilind, being all evidently derived from the Roman mola and molendinum M I L M I L 77 The subject Britons universally adopted the Roman name, 'but applied it, as their successors did, only to the Roman mill; and one of these was probably erected at every sta¬ tion or city in the kingdom. There was one at Manches¬ ter, which served equally the purposes of the town and the accommodation of the garrison. This water-mill was fixed immediately below the Castlefield and the town, on the channel of the Medlock. There, a little above the an¬ cient ford, the sluice of it was accidentally discovered about half a century ago. During the first five or six centuries of Rome, there were no public bread-bakers in the imperial city. They were first introduced from the East, at the conclusion of the war with Perseus, about the year 167 before Christ; and, towards the close of the first century, the Roman families were supplied by them every morning with fresh loaves for breakfast. But the same custom, which prevailed ori¬ ginally amongst the Romans and many other nations, con¬ tinued long afterwards amongst the Mancunians. The providing of bread for every family was left entirely to the attention of the women ; and it was baked upon stones, which the Welsh denominate greidiols, and we gredles. It appears, however, from the kiln-burned pottery which has been discovered in the British sepulchres, and from the British appellation of an odyn or ove7i remaining amongst us at present, that furnaces for baking were generally known amongst the aboriginal Britons. An odyn would, therefore, be erected in the mansion of each British baron, for the use of himself and his retainers; and when he and they removed into the vicinity of a Roman station, the oven would be rebuilt with the mansion. One bakehouse would be constructed, as we have previously shown one mill to have been set up, for the public service of all the Mancunian families. It appears that one oven and one mill were established in the town, and that the inhabi¬ tants were immemorially accustomed to bake at the one and grind at the other. Both, therefore, were in all pro¬ bability constructed at the first introduction of water mills and ovens into the country. The great similarity of the appointments refers directly to one and the same origin ; indeed, the general nature of all such institutions points immediately to the first and actual introduction of both. And, as the same establishments prevailed equally in other parts of the north, and pretty certainly obtained over the whole extent of Roman Britain, the same erections were as certainly made at every stationary town in the kingdom. MILL, James, author of the History of British India, and various other valuable works, was born on the 6th of April 1773, in the parish of Logie Pert, in the county of Forfar, at a place situated about seven miles from Mon¬ trose. His father united the occupations of shoemaker and small farmer. He received the first part of his education at the parochial school of Logie Pert, and afterwards at the grammar school of Montrose. Some pious ladies, amongst whom was Lady Jane Stuart, wife of Sir John Stuart, Bart, of Fettercairn, a place situate a few miles distant from that of his birth, having estab¬ lished a fund for educating one or two young men for the Church, Lady Jane1 applied to the Rev. Mr Foote, minis¬ ter of Fettercairn, to recommend one for that profession. Mr Foote in his turn applied to the Rev. Mr Peters, minis¬ ter of Logie Pert, who recommended James Mill, both on account of his own abilities, and the known good character of his parents. He was accordingly sent to the university of Edinburgh, where he went through the course of study necessary for admission into the Church of Scotland, and was, in due time, licensed as a Preacher in the usual form. Mill. He did not obtain any living in the church, and never, perhaps, had any particular liking for the profession, into which he was thrown more by accident than choice. The study which chiefly delighted him, and exercised his thoughts, during the period of his academical course, was that ol Metaphysical and Ethical Philosophy. The class of Moral Philosophy, which, in the arrangements of the uni¬ versity of Edinburgh, embraces tbe whole field of the philo¬ sophy of mind, was then taught by Mr Dugald Stewart, to whose noble eloquence, and animated exhortations to men¬ tal study, Mr Mill always listened with profound attention, and rapturous admiration. In a letter to one of his friends, written long after this period, namely, in 1821, when he had himself become greatly distinguished, he thus expresses his obligations to the lectures of that illustrious Professor:— “ All the years I remained about Edinburgh, I used, as often as I possibly could, to steal into Mr Stewart’s class to hear a lecture, which always was a high treat. I have heard Pitt and Fox deliver some of their most admired speeches ; but I never heard any thing nearly so eloquent as some of the lectures of Professor Stewart. The taste for the studies which have formed my favourite pursuits, and which will be so to the end of my life, I owe to him'.’ This acknowledgment was the more creditable to Mr Mill, that he had by this time widely separated from that metaphy¬ sical school of which Mr Stewart was the greatest orna¬ ment. Mr Mill removed to London soon after the commence¬ ment of the present century ; but before doing so, he seems to have officiated for a considerable time as a pri¬ vate tutor in the families of one or two gentlemen of for¬ tune and consideration ; and he appears also to have formed friendships with some young men, who afterwards dis¬ tinguished themselves in science and literature. From the period of his arrival in the metropolis, till the year ^ 1819, when he received, much to the honour of the do¬ nors, a valuable appointment in the India House, he sup¬ ported himself and his growing family (for he married in 1805) entirely by his pen. We scarcely know any similar instance of a mere literary adventurer, without any profes¬ sion or calling of any sort, maintaining himself and a large family for such a length of time, and preserving, as he un¬ questionably did, a character of the highest respectability, and lofty independence of thinking and writing. He not only supported his family without ever asking a favour,, or incurring a debt, but contrived, in the midst of his toils and cares, to educate them thoroughly ; and, in fact, they never had any other teacher. Much of his time was employed in writing for periodical publications. For several years he was an occasional contributor to the Edinburgh Review, which is indebted to his pen for some very able articles. He also wrote in many other periodical publications, among which were the British, the Eclectic, and Monthly Re¬ views. One of the works to which he was a large contri¬ butor was tbe Philanthropist, a periodical journal esta¬ blished by the Quakers and other benevolent promoters of education, the reform of the criminal code, prison dis¬ cipline, &c. With these excellent persons Mr Mill active¬ ly co-operated in the exertions to which the Lancasterian schools, and Infant schools, owed their origin ; and, at a later period, he was one of the founders of the London Uni¬ versity. His principal work, the History of British India, had been commenced as far back as the year 1806. His ven¬ turing even to think of so great an undertaking, whilst 1 We ought here to add, that Sir John Stuart continued till his death (about 1820), to correspond with Mr Mill, and to take the most friendly interest in him, and was the only person of station from whom, in his arduous struggles, he ever received the smallest help or encouragement. 78 i' * MI Mill, writing for his daily bread, and burdened with the main- ' tenance and domestic education of a numerous family, furnishes one of the noblest proofs of intellectual ardour, and confidence in the resources of industry, that can be found in the whole history of literature. Nor were his labours confined to this work, and the other daily calls we have mentioned ; for he found time, besides, to write more than one pamphlet upon subjects of interest at the mo¬ ment ; particularly a very conclusive answer to Mr Spence’s celebrated tract, entitled Britain independent of Com¬ merce. The answer was published in 1808. His steady industry brought him at last in sight of the goal of which he never lost sight, though sometimes almost sinking un¬ der the toils which the pursuit had imposed upon him, we mean, the completion of his History. In a letter writ¬ ten in October 1816, he thus expresses himself:—“ Thank God, after nearly ten years since its commencement, I am now revising it for the press. Whatever else it may con¬ tain, it will at least contain the fruits of a quantity of la¬ bour, of which nobody who shall not go over the same ground, and go over it without the assistance of my work, can form an adequate conception. Had I foreseen that it would have been one half, or one third, of what it has been, never should I have been the author of a History of India.” It was at last published in five volumes octavo, in the winter of 1817-18. It is the smallest merit of this book, that it was, and still is, the only single work cal¬ culated to convey to the general reader any intelligible notion whatever of India, or Indian affairs as a wdiole, and which is therefore indispensable to all Englishmen who would possess even the most general knowledge of one great department of their country’s interest. This is much; but it achieved far more. We are only saying what will be confirmed by the most eminent of those who have ad¬ ministered Indian affairs for the last ten years, when we say, that Mr Mill’s work was the beginning of sound think¬ ing on the subject of India. It gave a new turn to the thoughts of all the most thinking men amongst those who filled the most important posts in the local administration of India; and the measures of government in that coun¬ try have for many years borne, and are every year bearing, more and more the impress of his views. Although he had very freely censured the conduct of the East India Company, yet the powers of mind and know¬ ledge of the subject which he displayed induced the Court of Directors, in the spring of 1819, when they were desi¬ rous of strengthening their home establishment, to intro¬ duce him into it (though personally unknown to most of them, and having little or no interest), and to intrust to him the chief conduct of their correspondence with In-1 dia, in the revenue branch of administration. This is one of the most remarkable, as well as honourable instances of success in life, ever achieved by any literary man. Mr Mill had the rare fortune of being not only the first per¬ son who showed how India ought to be governed, but of being called upon to be a leading instrument in execut¬ ing his own views. And not only in that situation, but in the higher one to which he rose'in the course of promo¬ tion, viz. head ot the department of correspondence with India in the India House, or, in other words, chief mini¬ ster for Indian affairs to the East India Company, he lived to see almost all the great principles which he had advo¬ cated not merely recognised, but a commencement made in carrying them into practice in the government of India. Mr Mill’s official duties mig^t weli have furnished him with an excuse for relinquishing his pen as an author. But his mind was not of a cast to stop short in the career of inquiry, or to allow the calls of business to suppress the fruits of his reflections. It was observed of Lord Brougham, by the late Sir Samuel Romilly, that he could find time for every thing. So was it with Mr Mill. Never L L. behind in his official duties, and mixing largely in the so- Mill, ciety of intelligent men, he was all the while engaged, just'—-“v-' as if his daily bread yet depended on the employment of his pen, in literary labour. To this noble ardour the pre¬ sent work is much indebted. He became a contributor to the Supplement to its former editions, about three years before his appointment to the India House ; but his con¬ tributions were continued nearly till the completion of that work in the year 1824; and he never sought an excuse, in his official labours, for any refusal to write what he thought might be useful. The extensive circulation of the work made it, in his eyes, a precious instrument for the diffusion of knowledge ; and on this, and other accounts, he always took a strong interest in its character and success. With¬ out enumerating the whole, we may mention the articles on Colonies, Education, Government, Jurisprudence, Law of Nations, Liberty of the Press, and Prison Discipline, as the most remarkable. These essays, all of wdiich are in¬ corporated in the present edition, were so wddely dissemi¬ nated by means of the work in which they appeared, and by separate republications of them, at a very cheap rate, as to make them by much the best known of his produc¬ tions ; and, we believe we may add, the most effective in stirring the thoughts of his contemporaries. In 1821-22 he published his Elements of Political Eco¬ nomy, a treatise in which the science, as remodelled by Ricardo, was for the first time brought into a systematic and logically arranged form. In some of the criticisms on this work it seems to have been forgotten, that here Mr Mill made no pretensions to originality; that he “ pro¬ fessed,” to borrow his own words, “ to have made no dis¬ covery his object having been simply “ to compose a school-book of political economy.” Mr Mill’s ingenuity as a very acute and original me¬ taphysician was abundantly displayed in his Analysis of the Phenomena of the Human Mind, published in 1829. In this work he evinced analytical powers rarely, if ever, surpassed ; and which have placed him high in the .list of those subtile inquirers who have attempted to resolve all the powers of the mind into a very small number of simple elements. Mr Mill fook up this analysis where Hartley had left it, and applied the same method to the more complex phenomena, which the latter did not attempt to explain, from the general neglect of metaphysical studies in the present age, this work, which, at some periods of our his- tory, would have placed its author on a level, in point of reputation, with the highest names in the republic of let¬ ters, has been less read and appreciated than any of his other writings. Mr Mill’s last work was the Fragment on Mackintosh, published anonymously in 1835, but of the authorship of which he made no secret. This is a criticism of a very severe kind, upon the Dissertation on the History of Ethical I hilosophy, contributed by Sir James Mackintosh to the present publication. Most even of those who agree in the general opinions expressed by Mr Mill, have admit¬ ted, that the degree of bitterness which he manifested to¬ wards this eminent and singularly candid writer was alto- gether uncalled for. With all our strong respect for his abilities and character, we confess that we never could look into this publication without feelings of wonder and mor¬ tification, that Philosophy sometimes can leave her vota- nes so bereft of sentiments which, in their cool moments, t ley never fail to inculcate as constituting the primary conditions of all true, manly, and useful inquiry. But no one can doubt Mr Mill’s sincerity, nor question the atten- tioii due to any thing which proceeded from his pen on the subjects adverted to in the Fragment. Mi Mill wrote several of the principal articles in the early numbers of the Westminster Review, and resumed the pen, after an interval of some years, to write the cele- brated article on the Ballot. After the junction of the Westminster with the London Review, he wrote some other articles for that journal, which, though rougher, are perhaps more racy and characteristic than his earlier con¬ tributions. The last of them, entitled Aristocracy, was the last of his literary labours. It was written during the illness of which he died. Before taking leave of the writings of this remarkable man, we ought perhaps to mention, as descriptive of his mental character and pursuits, that he had at one time resolved, after finishing his History of India, to write a History of English Law. He speaks as follows of this pro¬ ject, in a letter written in 1818 :—“ You do not know, per¬ haps, what is my presumption on the subject of law. The next work (after the History) which I meditate, is a His¬ tory of English Law, in which I propose to trace, as far as possible, the expedients of the several ages to the state of the human mind, and the circumstances of society in those ages, and to show their concord or discord with the standard of perfection ; and I am not without hopes of producing a book readable by all, and if so, a book capable of teaching law to all.” We do not know whether he ever made any progress in the execution of this design, or by what circumstances he was induced to abandon it. His intimacy with Mr Ricardo, and his strong bias towards metaphysical speculations, probably induced him to en¬ deavour, in preference, to systematize the science of poli¬ tical economy, and to prosecute the inquiries which led to the publication of his Analysis of the Phenomena of the Mind. Mr Mill, from an early age, was subject to gout; a dis¬ ease which not unfrequently in old age affects the chest. For some winters previously to his death he had an obsti¬ nate cough, which, however, went off as the summer ad¬ vanced. But in the summer of 1835 it did not go off, and the symptoms of pulmonary consumption by degrees ma¬ nifested themselves. He declined slowly, and died on the 23d of June 1836. His remains were buried in Kensing¬ ton Church, having lived at Kensington during the last five years of his life. If we were called upon to state what, beyond all others, was the distinguishing characteristic of Mr Mill’s mind, we should answer, his power of generalization. To have this power in a high degree, three qualities of mind, each of them rarely to be met with in a high degree sepa¬ rately, still more rarely together, are requisite—the observ¬ ing faculty, the analytical faculty, and the ratiocinative faculty. Thus, in Aristotle the observing and ratiocinative powers, and in Bentham the ratiocinative, existed in con¬ siderable force, whilst the former had but little, and the latter still less, of the analytical. They made enumera¬ tions and catalogues with wonderful minuteness, which, however, from want of analysis, were often inaccurate or imperfect; rendering, moreover, the question treated un¬ necessarily complicated, in proportion to that imperfec¬ tion. The very complication in which a patient but un- analytical mind is sure to involve any large subject, fre¬ quently obtains for such men the character of possessing and displaying a vast knowledge of and command over de¬ tails, when in truth the display and enumeration of end¬ less details arises from their inability to penetrate into the heart of their subject,—to take it to pieces, and then se¬ parate from it what is extrinsic, bringing out the real core of the question into naked and broad light. He who can do this will generalize accurately. But to do this is given to few; whilst, on the other hand, to generalize inaccu¬ rately, requires neither labour in collecting facts, nor pe¬ netration in analysing them, nor logic in treating the re¬ sults of the analysis; and is unfortunately one of the com¬ monest of the qualities that belong to men. And, as the mass of mankind seldom give themselves the trouble to seize distinctions, they are in the habit of applying to ge¬ neralization, in the true sense of the word, and as Mr Mill possessed it, the censure deserved only by such slovenly generalizations as those which commonly pass under the name. Or the three faculties necessary for correct gene¬ ralization, Mr Mill had the observing faculty in a smaller proportion than the other two ; but it would be difficult to name any writer who possessed a larger share of all the three together. Mr Mill was wont to attribute a considerable share of in¬ fluence in the formation of his intellectual character to his reading the works of Plato. And, no doubt, to read with understanding the writings of Plato, must produce extraor¬ dinary effects upon the mind of any man. In the style, however, in which Mr Mill developed and embodied his speculations, he bears more resemblance to Aristotle than to Plato. At. the same time, this was rather in the form than the matter ; for he had little of Aristotle’s vast power of observation, and he had much of Plato’s dialectical and analytical powers, though altogether wanting the poetical qualities of his mind. Of modern philosophers, he whom Mr Mill most resembles is Hobbes. There is in both the same clearness, the same condensation, the same simplicity of style, the same utter abjuration of all rhetorical ornament, or any thing else that might lead either the mind of the writer or of the reader away, even for a moment, from the point under discussion. There is often, however, a quiet dry humour lurking in Hobbes’s sentences, which is not to be found in Mr Mill’s. Hobbes’s language, too, is more idiomatic. In the boldness and originality of the tone of thought the resemblance is striking. It has been usual with certain persons to consider Mi- Mill as a disciple of Bentham. It seems worth while to say a few words on this point. Mr Mill, in his Fragment on Mackintosh, having occasion to state that no man ever derived his opinions from the conversation of Mr Ben¬ tham, inasmuch as, with him, conversation was relaxa¬ tion purely, adds, “ It is also a matter of fact, that till within a few years of the death of Mr Bentham, the men of any pretension to letters who shared his intimacy, and saw enough of him to have the opportunity of learning much from his life, were in number two. These men were familiar with the writings of Mr Bentham ; one of them, at least (Mr Mill himself), before he was acquainted with his person. And they were neither of them men who took any body for a master, though they were drawn to Mr Bentham by the sympathy of common opinions, and by the respect due to a man who had done more than any body else to illustrate and recommend doctrines which they deemed of first-rate importance to the happiness of man¬ kind.” So far, and no farther, was Mr Mill a disciple of Mr Bentham. A trait of Mr Mill’s character which well deserves to be commemorated, was the warm interest he always took in the intellectual progress of any young man known to him as possessing some capacity and inclination to improve himself. His enlarged and philosophical view of the sub¬ ject of education leading him to regard nearly the whole of man’s life as a course of education, he endeavoured, with great earnestness and energy, to impress upon the minds of such young men the importance of educating themselves after a different standard from the vulgar one of their age; and of rendering even those studies which their various professions or modes of life obliged them to pursue, as much as possible the means of invigorating and improving their intellectual and moral nature. In enforcing his pre¬ cepts, Mr Mill was aided by the extraordinary nerve and clearness with which he expressed himself in conversation. Fie was, indeed, one of the best discoursers, on grave sub¬ jects, that we ever met with ; and he spoke with an ame¬ nity and ease, and even with a degree of point and anima- 80 M I L Millar, tion, that could not have been anticipated from acquaint- ance merely with the dry and emotionless character of his written productions. In a word, the tendency of all Mr Mill’s writings was to lead men to trust for their opinions neither to the autho¬ rity of a name, however renowned, nor to the dogmatical as¬ sertions of a man or a body of men, however powerful; but to the evidence of their senses and their reason. To do this he deemed of first-rate importance to produce good morals, good legislation, good government, in a word, hu¬ man happiness; and he enforced his precepts with an ear¬ nestness proportionate to so momentous an end. In like manner, he regarded all attempts to corrupt the springs of go¬ vernment, and thereby to “ strike at the well-being” to use his own words, “of all the myriads of whom the great body of the community is composed, from generation to gene¬ ration,” with a severity of indignation that might be ex¬ pected from his earnest and energetic character. His com¬ prehensive mind, long habituated to large views, and to dealing with classes rather than individuals, sympathized as keenly with the bulk of mankind as an ordinary mind does with the hero or heroine of a well-told tale. Such ought to be, but how seldom has it been, the character of the legislator and the statesman : patriae impendere vitam, Non sibi, sed toti genitum se credere mundo. Mill, John, a very learned divine, was born at Shap in Westmoreland, about the year 1645, and became a servi¬ tor of Queen’s College, Oxford. Upon his entering into orders he became an eminent preacher, and was made pre¬ bendary of Exeter. In 1681 he was created doctor of di¬ vinity ; about the same time he was made chaplain in or¬ dinary to King Charles II. ; and in 1685 he was elected principal to St Edmund’s Hall in Oxford. His edition of the Greek Testament, which will render his name ever memorable, was published about a fortnightbefore his death, which happened in June 1707. Dr Mill was during thirty years employed in preparing this edition. MILLAR, James, M.D., whose name is well entitled to notice here, on account of his connection with this work, was born in the town of Ayr, on the 4th of February 1762. He received the early part of his education in the Academy at Ayr, where he acquired considerable knowledge of the learned languages. He afterwards passed through the or¬ dinary curriculum of the literary, philosophical, and theolo¬ gical classes in the university of Glasgow, in order to qua¬ lify himself to enter the church of Scotland ; and, as is usual for young men destined to that profession, employed part of his time in the business of private teaching. Havino- been induced by his friend Dr Porteous to go out to Ja” maica as tutor in a gentleman’s family,'he remained in that island for four years ; and upon returning home, he was li¬ censed to preach by the presbytery of Irvine. He after¬ wards for a considerable time officiated as chaplain to the university of Glasgow. His success in this vocation did not, however, correspond with his expectations; and, be¬ ing naturally possessed of an acute and aspiring mind, he turned his thoughts to the study of medicine. He accor¬ dingly removed to Edinburgh, and completed his medical course in this university, where he received his deo-ree. He then proceeded to Paisley, and continued to exercise the duties of his profession for some years in that place; but as he had always been distinguished by an ardent love' of science, he was induced to return to Edinburgh, as likely to furnish occupation more congenial to his taste and views. He was at first engaged in writing for, or in su¬ perintending, one or other of the periodical miscellanies then published in this city; but a more extensive and im¬ portant field was at length opened to his abilities and in- dustiy, by the proprietors of this Encyclopaedia, with whom he entered into an agreement to superintend a new and M I L improved edition of it, being the fourth. The third edition MiU:| consisted of eighteen volumes, to which was appended av"—"V1 Supplement in two; but it was resolved, from the first, to extend the fourth to twenty volumes, and Dr Millar had the satisfaction of conducting this great undertaking from first to last, and of being instrumental in introducing into the work, notwithstanding the limited means at his disposal, a variety of new treatises, besides other improve¬ ments, not less required though not so prominent, and many corrections. Having abandoned all other occupa¬ tions, in order to devote himself exclusively to this work, he took possession of the editorial house, connected with the printing establishment belonging to the proprietors, and there he continued to reside till the completion of the undertaking. This was the happiest as well as the most useful period of his life. The house he occupied was small but comfortable ; and it contained a very useful collection of books of reference and general literature, to which the proprietors continued to add from time to time ; so that he was not only enabled to furnish his contributors with the materials of their labours, but to carry on his own, with¬ out stirring abroad in quest of the necessary books. As chemistry and natural history were the sciences which he chiefly studied, and to which, indeed, he was enthusiasti¬ cally devoted, the new articles which he himself contribu¬ ted to the work have been mostly superseded, and replaced by others more in unison with the rapid progress of know¬ ledge in these departments; but it is due to his memory to mention the following, as affording proofs both of his industry and the range of his acquirements: Cetology, Chemistry, Conchology, Crystallization, Dyeing, Dynamics, Erpetology, Furnace, Galvanism, Mineralogy, Ores, and the analysis of Stones. Some of these treatises were after¬ wards republished, we believe, in separate forms. About the same period that he completed his labours upon the Encyclopaedia, namely, in 1810, he gave to the world anew and greatly improved edition of Williams’s Mineral King¬ dom, in two volumes octavo. Although entirely a work of practical experience, the result of a confined occupation in the coal and mining districts of the country, Dr Millar so enlarged and expanded it, as to render it a not unaccep¬ table present to the scientific reader. In an appendix, he gave an extended view of the sciences of mineralogy and geology, which was necessarily precluded by the li¬ mited knowledge and experience of Mr Williams. Al¬ though geology since that period has made singular and unexpected advances, this part of the publication deserves to be noticed, as including a more copious detail of geo¬ logical facts than had at that time been presented to the public. The only other literary undertaking in which Dr Millar engaged was the Encyclopaedia Edinensis, the ostensible design of which was to present to the public, in a few volumes, a succinct and accessible epitome of general knowledge, suited to the great mass of the community. But in consequence of the embarrassed affairs of the pro¬ prietors, the undertaking was for a time suspended, and he did not live to complete it. From this period Dr Millar relinquished all connection with literary undertakings, and officiated for several years as physician to the Edinburgh Dispensary, the duties of which situation he discharged with a zeal and philanthropy beyond all praise. By those who knew him well Dr Millar was greatly esteemed. He was an agreeable and intelligent companion, whose con- veisation was acceptable as well to men of the world as to men of science. I hough he lived a life of labour, his rewards were but small; and this, joined to the failure of some of his attempts to establish himself as a lecturer on chemistry and mineralogy, contributed somewhat, in the later period of his life, to sour his temper ; but he al¬ ways manifested a liberal and independent spirit, and took M I L lillstone a warm interest in the progress of knowledge, as well as II in the welfare of its cultivators. He died at Edinburg-h Itillener^Qn tjie 0£ ju]y 1827, leaving a widow and several >"”v children. MILLSTONE, the stone by which corn is ground. The millstones which we find preserved from ancient times are all small, and very different from those which are now in use. Thoresby mentions two or three such found in England, amongst other Roman antiquities, which were but twenty inches broad ; and there is reason to be¬ lieve that the Romans, as well as the Egyptians and Jews, did not employ horses, or wind, or water, as we do, to turn their mills, but made their slaves and captives of war do this laborious work. Sampson, when a prisoner to the Philistines, was treated no better, but condemned to turn the millstone in his prison. The runner or loose millstone, in this sort of grinding, was usually heavy for its size, be¬ ing as thick as it was broad. This is the" millstone which is expressly prohibited in Scripture to take in pledge, be¬ cause, lying loose, it was more easily removed. The Tal¬ mudists relate, that the Chaldeans made the youno- men of the captivity carry millstones with them to Babylon ; and hence, probably, their paraphrase renders the text “ have borne the mills or millstones,” which might thus be true in a literal sense. I hey have also a proverbial ex¬ pression of a man with a millstone about his neck ; which they use to express a man under the severest weight of affliction. This also plainly refers to the same small kind of stones. MILLLNARIANS, or Chiliasts, a name given to those in the primitive ages, who believed that the saints will reign with Christ on earth for a thousand years. See Millennium. MILLENER, or Milliner, one who sells ribands and dresses, particularly head-dresses for women, and who makes up those dresses. Of this word different etymolo¬ gies have been given. It is not derived from the French, who cannot express the notion of milliner otherwise than by the circumlocution marchande or marchande des modes. Neither is it derived from the low Dutch, the great but neglected magazine of the Anglo-Saxon. For Sewel, in his English and Dutch Dictionary, published in 1708, de- sciibes millener as a “ pedlar who sells ribands and other trimmings or ornaments, a French pedlar.” Littleton, in his English and Latin Dictionary, published 1677, defines millener, “ a jack of all trades,” millenarius, or mille mer- cium venditor ; that is, “ one who sells a thousand different sorts of things.” from this etymology, which seems fan- ciful, we must hold, that it then implied what is now term- ed a haberdasher of small wares.” Before Littleton’s time, however, a somewhat nicer characteristic than seems compatible with this notion, appears to have belonged to them ; for Shakspeare, in his Henry IV. makes Hotspur, when complaining of the daintiness of a courtier, say, “ he perfumed Yxke a milliner.” The fact seems to be, that tiere were milleners of several kinds ; as, horse milleners, w io make ornaments of coloured wmrsted for horses; ha¬ berdashers of small wares, the milleners of Littleton ; and milleners such as those now peculiarly knowm by that name, w lether male or female, to whom Shakspeare’s allusion seems most appropriate. Lastly, Dr Johnson, in his dic- , ives the w°rd from milaner, an inhabitant of i an, whence first came people of this profession, as a Lombard is a banker. M * I L 81 MILLE Passus, or Millia Passuum, a very common expression amongst the ancient Romans for a measure of distance, commonly called a mile. Milliarium, rarely used. A Roman mile Hesychius made to consist of seven stadia; Plutarch, little short of eight; many others, as Strabo and Polybius, eight stadia and no more. The reason of this difference seems to be, that the former had a regard to the Grecian foot, which is greater than the Roman or Italic. Ibis distance is oftentimes called lapis, from the stone by which it was marked or indicated. MILLENNIUM, a period of a thousand years; gene¬ rally used with reference to the thousand years during which, according to the statement of the Apostle John in the 4th verse of the twentieth chapter of the Apocalypse, Christ is to reign with his saints upon earth. As almost all nations are possessed of some traditionary information respecting the existence of a happy and a holy age at the commencement of the world’s history, so among most of them do we find traces, more or less distinct, of an expectation that a period of still greater excellence will immediately precede its close. In several of the oriental religious systems this expectation occupies a pro¬ minent place p nor will the classical reader need to be re¬ minded of the well-known Eclogue of Virgil, in which he describes the glories of “ the last age,” and the return of the Saturnian reign, in strains which so strikingly accord w ith those of the Jewish Scriptures, that this poem seems to have been commonly regarded by the early church as prophetic of the birth and reign of Christ.2 A still more remarkable, because more explicit, allusion to a millennium, occurs in the writings of Plato, in the statement which he repeatedly makes, that a period of a thousand years (’fcihtirris nooua, yChiooTw irog, iregiodog yjkiiTr[g) must inter¬ vene betw een death and our “ arrival at the inheritance and possession of the second life.”3 Among the Jews this expectation assumed a more defi¬ nite form, and was expressed in less hesitating language. Their prophets distinctly revealed to them the certainty of a period of future felicity under the reign of the Mes¬ siah ;4 and they had, from a comparatively early age, the tradition, that that period would extend through a thou¬ sand years. This tradition seems to have had its rise in the notion, that as the work of creation was divided among six ordinary days, so the world would have to pass through six divine days of toil and suffering (each of which days they imagined to be a millennium, from a misinter¬ pretation of Ps. xc. 4) ; and that as God rested on the seventh day, so should the seventh millennium be a period of universal rest and quiet under the reign of the Mes¬ siah. In the rabbinical waitings, frequent allusions to this opinion are to be found, the most important of which have been collected by Wetstein, in his notes on Apoc. xx. Of these allusions, the following maybe taken as a specimen : “ There is a tradition in the house of Elias, that the righteous whom the holy blessed God shall raise from the dead, shall not return again to the dust, but for the space of a thousand years, in which the holy blessed God shall renew the world, they shall have wings like the wings of eagles, and shall fly above the waters.”5 From the Jews, this notion of a personal reign of the Messiah with his saints on earth, was adopted by seve¬ ral in the early church, by whom the passage in the Apocalypse above referred to was confidently quoted in support of the opinion. By some of these the blessings Mille Passus % ^ee ' }utarc^. et Osir. c. 47 ; Hj'de De llelig. Vet. Pen. p. 832. Ceet. cVUgUStine’ lnchoat- Expos, in Ep. ad, Romanos; Lactantius, Instit. vii. 24; Eusebius, Constantini Orat. ad Sanctorum ^ nnanis, p. 1054, E.; see also Phaed. p. 1223, D. ; and De Rep. lib. x. n. 761, E. bee, among other passages, Is. ii. 1-4, ix. xi. xxv. ; Zech. xiv. sanhedrin, fol. 92, quoted in Dr Ad. Clarke’s Comment, in loc. VOL. XV. L MILLENNIUM. 82 Millen- anticipated during the millennium were regarded as en- nium. tirely of a temporal and sensual kind, while others looked v jr— Y ' forward to that period as a season of spiritual enjoyment and religious harmony. In neither of these forms, how¬ ever, does the opinion ever seem to have become general in the church. Indeed we are expressly informed by Origen, that it was confined to those “ of the simpler sort,” and to such as, “ refusing the labour of intelligence, fol¬ lowed the superficial mode of literal interpretation.”1 Great obscurity, however, attends the history of this dogma in the early church, as the documents we possess are too few, and too partial in their information, to justify our ex¬ pressing any definite opinion on the subject. from the testimony of Eusebius, we learn that the first who taught it in the church was Papias, a bishop of Phrygia, in the earlier part of the second century, who professed to have received a traditional revelation on the subject from the apostles. Influenced by a regard to the piety and anti¬ quity of the man (rr^ d.pyjJ-tdr^ra ruvdgog ‘Tgo3if3Xrilaivoi), several ecclesiastics, and among the rest Irenaeus and Jus¬ tin Martyr, adopted his opinion. Adherents were also found in the Latin church, especially from among the Montanist party. It is justly remarked, however, by Pro¬ fessor Neander, that the defensive attitude which the ad¬ vocates of the doctrine perpetually assume in regard to it, affords a strong presumption that it was not the doctrine of the church in general.2 3 In the third century it was vehemently assailed by Ori¬ gen, and as eagerly defended by Nepos, a bishop of the district of Arsinoe, in Egypt. The latter, however, was but a feeble antagonist for so redoubtable a controversial¬ ist as Origen, whom his scholars delighted to style the Adamantine; and consequently his interference served only to quicken the downfall of the cause he had espoused. The assault of Origen was followed by that of Dionysius, bishop of Alexandria, and one of Origen’s most able scho¬ lars, which seems, in the Eastern church at least, complete¬ ly to have driven the opinion into obseurity.J From this time forward we find no traces of it in ecclesiastical history, until we arrive at the tenth century, when it was revived, though in a very altered form, and used for the purpose of terrifying the ignorant populace into larger concessions to the ambition and avarice of the papal power. They were taught that the millennium, during which Satan was to be bound, was to be calculated from the birth of Christ, and consequently was then rapidly drawing to a close ; that at its termination Satan would be again set free, and the reign of Anti-Christ would commence ; and that, after a short season of triumph to the enemies of the church, the last judgment would take place, and the world be consumed by the final conflagration. So powerful was the effect produced by the teaching of this doctrine, that mul¬ titudes, as the eventful year that was to close the last cen¬ tury of the millennium approached, forsook their homes, “ and hastened to the shores of Palestine, with the pious persuasion that Mount Sion would be the throne of Christ when he should descend to judge the world ; and these, in order to secure a more partial sentence from the God of mercy and charity, usually made over their property before they departed, to some adjacent church or monastery.”4 The much-dreaded year, however, hav¬ ing passed away, without any of the expected convulsions, the minds of the people recovered their equilibrium. Millen. E\ Those who had fled returned to their homes, and resumed nium. , their wonted occupations ; “ and the only, lasting effect of this stupendous panic was the augmentation of the tem¬ poral prosperity of the church.”5 Since the reformation, the opinion of the early Millen- narians has been revived in the church; and the doctrine of a personal reign of Christ on earth with his saints has been maintained by many excellent persons, as one of the truths clearly revealed in the Scriptures. The tenets of those who avow this opinion are chiefly the following :— That Jerusalem is to be rebuilt, the temple restored, and sacrifice a(rain offered on the altar ; that this city is to form the residence of Christ, who is to reign there in glory with all his saints for a thousand years; that for this pur¬ pose there shall be a resurrection of all the pious dead, that none of the Saviour s followers may be absent during his triumph ; that at the close of the thousand years, they shall all return to heaven, and the world be left to Satan and his followers for a season ; and that then the gene¬ ral resurrection and last judgment shall taxe place, and the history of the world be brought to a close. In sup¬ port of these tenets, they appeal to numerous passages in the prophetical writings of the Old Testament, to some sayings of Christ himself recorded in the Evangelists, to one or two detached passages in the writings of the apostles, and principally to the declarations of St John in the Apocalypse. The passages in the Prophecies on which most stress is laid by them, are those in which the latter- day glory seems to be described in connection with the return of the Lord of Hosts unto Zion, the establishment of his sanctuary with men for ever, and the coming of the nations to Jerusalem to receive instruction, and offer their homage to him.6 * The declarations of our Lord referred to are those in which he speaks of the destruction of Jeru¬ salem in connection with his second advent L from which it is inferred that Jerusalem shall remain in its present state, and that seasons of tribulation and sorrow shall be¬ fall the church, until Christ come to restore the one to its former glory, and to exalt the other over all its enemies.8 The passages quoted from the apostles are chiefly two : the one the address of St Peter to the Jews,—“ Repent and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord ; when he shall send Jesus Christ, which before was preached unto you ;”9 which is held to prove that Christ shall come again, and that this event shall be attended with times of refreshing to the Jews; the other the de¬ claration of St Paul to the Thessalonians,10 that “ the dead in Christ shall rise first;” from which it is inferred that there will be a resurrection of the just antecedent to the general resurrection. The main prop of the doctrine, however, is the passage in the twentieth chapter of the Apocalypse, already referred to, and which is as follows : “ And I saw thrones, and they sat on them, and judgment was given unto them ; and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their fore¬ heads or in their hands; and they lived and reigned with Christ a thousand years. But the rest of the dead lived not again till the thousand years were finished. This is 1 Proleg. in Cant. cant. 69, B.; de Princip. ii. 11, sect. 2. 2 Kirchengcschichte, bd. i. abt. 3, p. 728; see also Waddington’s Church History, ch. iii.; Whitby’s Treatise on the Millennium, appended to his Commentary, &c. 3 Euseb. Hist. Eccl. vii. 24, 25. 4 Waddington’s Church History, chap. xv. 5 Ibid. 6 See Begg’s Connected View of some of the Scriptural Evidence of the Redeemer’s Speedy Personal Return, &c. pp. 85-118. 7 Matt. xxiv.; Mark, xiii.; Luke, xxi. 8 Begg’s Letters on our Saviour’s Predictions, See. passim. 9 Acts, iii. 19, 20. 0 1 Ep. iv. 16. MILLENNIUM. 83 the first resurrection.” Verses 4, 5. Here it is contended that we have a distinct testimony in favour of a millennial reign of Christ and his people, and of a resurrection of those who had been faithful to him, as well as of those who had suffered for his sake, antecedent to that of the rest of the dead, and hence called “ the first resurrection.” By those who oppose this system, it is generally admit¬ ted that the expectation of a long season of uninterrupted triumph to the cause of Christ, is one which is fully au¬ thorized by the declarations of Scripture. It is denied, however, that these declarations, when properly interpret¬ ed, support the notion of a personal reign, and a twofold resurrection. With regard to the passages from the Old Testament prophecies, it is maintained, that many of those adduced by Millennarians, as favouring their system, have been already fulfilled in the temporal history of the Jew¬ ish nation, and that in others which seem to have a still future reference, Jerusalem is used as typically represen¬ tative of the Christian church in its triumphant state ; the temple is spoken of in reference to the ministrations of the Gospel; and the coming of the people to Jerusalem is set forth as indicative of the universal prevalence of the Christian faith. The inference deduced by Millennarians from the words of our Lord above referred to, is regarded by their opponents as at best very obscure and far-fetched, while, on the other hand, it is contended, that the ob¬ vious comparison which our Lord draws between the de¬ struction of Jerusalem and his second coming, as well as the circumstances of appalling and unexpected suddenness with which his appearance will be made, seem much bet¬ ter to accord with the notion, that the coming spoken of is his coming to judgment, than with the opinion that it is an advent for which his church shall be longing, and the world prepared. In the statement of St Peter to the Jews, it is admitted that there are some expressions which would seem at first sight to favour the millennarian scheme ; but it is argued that every such inference is precluded by the words which follow, and in which the apostle declares, that the heavens must retain Christ “ until the restitu¬ tion (or accomplishment) of all things, which God hath spoken by the mouth of all his holy prophets since the world began.” As, therefore, by the showing of Millenna¬ rians themselves, the glories of the millennium form part of the “ all things” that are revealed in inspired prophecy, and which must be fulfilled before Christ shall re-appear on earth, it is plainly impossible that he can come to our world in person at the commencement of that period ; and consequently the times of refreshing spoken of by St Pe¬ ter must be interpreted of other blessings than those which would flow from the personal reign of Christ at Jerusalem. As to the statement of St Paul, that “ the dead in Christ shall rise first,” it is affirmed that a single glance at the context is sufficient to convince us that the apostle is not establishing a difference between the righteous and the wicked as to the time of their respective resurrections ; but is simply showing that those believers who are alive at the season of Christ’s second advent shall not enjoy any advantage over those who are dead, for the latter shall be raised first, i. e. previous to the common ascent of the whole to meet the Lord in the air. In reference to the passage from the Apocalypse, it is contended, ls£, That the expression “ first resurrection” no more necessitates a twofold corporeal resurrection, than the phrases “ first and second death,” so frequentljr employed by the same writer, necessitate the supposition of a tw'ofold corporeal dissolution ; but that in both cases we have an instance of the same intermingling of the spiritual with the material, as in our Lord’s declaration, “ Let the dead bury their dead,” where, as is generally admitted, the first adjective is used in a spiritual or metaphorical, the second in a literal and corporeal sense: 2dly, That the phrase, “ the rest of the dead,” refers to “ the remnant” spoken of in the Millen- 21st verse of the 19th chapter (the words in the original nium are the same in both verses, 6/ Xoikoi), by whose resurrec- tion is intended the temporary restoration of the reign of evil after the millennium : 3dly, That it is not a legitimate interpretation to regard the expression, “ I saw the souls of them that were beheaded,” &c. as intimating their cor¬ poreal resuscitation ; for though we may properly enough speak of a soul when we mean a person, yet it wmuld out¬ rage all propriety of language for any one to say that he saw the souls of certain individuals, when he meant that he saw these individuals themselves : £thly, That by the return to the earth of the souls of the martyrs and con¬ fessors, nothing more is intimated than the universal pre¬ valence of that holy and determined spirit by which they were distinguished ; in the same way as the ancient pro¬ phecy, that Elias should return to earth before the appear¬ ance of the Messiah, is allowed to have received its accom¬ plishment when John the Baptist came “ in the spirit and power of Elias:” 5th/y, That it is as contrary to sound principles of interpretation to expound a book professedly symbolical literally, as it would be to expound a professed narrative symbolically : Gthly, That it is imperative on those who insist on the literal interpretation of this pas¬ sage to be consistent, and interpret literally the whole book, in which case we should have literal vials, and trum¬ pets, and mill-stones, and chains, and burning lakes, &c.; an extent of literality for which few will be hardy enough to contend : and, lastly, That by interpreting the whole passage symbolically, and understanding by it a predic¬ tion of a season of joyful triumph to the church, during which the whole world shall be under the religion of Christ, and the zeal and piety of its holiest members in its purest days shall be universally diffused, no violence is done to any part of it, while a meaning is elicited in en¬ tire accordance with the general tenor of Scripture. It is further objected by those who are opposed to Mil- lennarianism, in the first place, that the hypothesis is in it¬ self exceedingly improbable ; for since Scripture assures us that the departed saints are already with Christ in heaven, in the enjoyment of unspeakable felicity, it is hardly con¬ ceivable that they would leave such a state to dwell for a thousand years on earth, in a state which at best must be one of imperfect enjoyment, and then return to heaven to permit their enemies for a season to reign in their stead : 2dly, That the millennarian notion of a resurrection of the righteous, antecedent to that of the wicked, is directly opposed to the testimony of Scripture, which represents the two as simultaneous; see, e. g. John v. 28-29, &c.: Qdly, That the idea of a long interval elapsing between the advent of Christ and the last judgment, is inconsistent with those passages which represent the one as imme¬ diately consequent upon the other; such as, 2 Thess. i. 7-10; 2 Tim. iv. 1, &c.: \ttldy. That, on the millennarian hypothesis, there can be no judgment of the righteous whatever, for they having been once admitted to reign with Christ, can never after that be placed for trial at his bar,—a hypothesis clearly at variance with innumerable passages of Scripture, such, e. g. as Horn. xiv. 10-12; Math. xxv. 31-46, &c.: btlily, That to represent the mil¬ lennium as a state of immortality on earth, is to confound it with the New Jerusalem, though the two are distinctly revealed as separate states, the one previous and the other subsequent to the final judgment: and, lastly, rIhat the theory of millennarianism is in two points at least self- contradictory ; for it not only represents Christ as reign¬ ing until the last enemy has been destroyed, and yet sup¬ poses the existence of a w hole host of enemies, who, at the close of that reign, are to be gathered together; but also represents them as contending with the saints, until they are consumed by fire from God (Rev. xx. 7-10), though, 84 M I L M illot. Milliarium according to another part of their hypothesis, the saints Aurem. siiail before this have returned with Christ to heaven. For these reasons, among others of Jess weiglit, this hy¬ pothesis of a personal reign of Christ on eartli has been rejected by the majority of divines, and the period of the millennium regarded as a season of great spiritual blessed¬ ness, consequent on the complete triumph of Christianity throughout the earth. (n. n. n. n.) MILLIARE, or Milliarium. See Mille Passes. MILLIARIUM Aureum, was a gilded pillar in the orum of Rome, at which all the highways of Italy met, as one common centre. From this pillar the miles were count¬ ed, and at the end of every mile a stone was put down. The military column was erected by Augustus Caesar, and, as we are informed by travellers, is still to be seen. MILLOT, Claude-Fran^ois-Xavier, a distinguished historian, was born in 1726 at Ornans, a small town of Franche-Comte, being descended from an old family con¬ nected with the profession of the law. When his studies were completed, he was admitted amongst the Jesuits; and after having taught classical learning in several towns, he was appointed professor of rhetoric in the College of Lyons, one of the most celebrated institutions of the so¬ ciety in France. In a discourse, crowned by the academy of Dijon, he ventured to pronounce an eulogium on Mon¬ tesquieu, an act of boldness which offended his superiors, and, from the disagreements that ensued, led to his return to the world. The Abbe Millot, who was often success¬ ful in academical competitions, fancied that his talents fitted him to excel in the pulpit; but after having preach¬ ed, without success, an advent at Versailles, and a lent at Luneville, he abandoned a career for which he was disqua¬ lified by the weakness of his voice and the timidity and embarrassment of his manner. The desire of being use¬ ful to young people had induced him to undertake trans¬ lations ; and it was with this view that he composed abridgements of the history of France and of England, two works which had great success. About this time the Marquis of Felino, minister of Parma, having established in that city a college for the education of the young nobi¬ lity, appointed the Abbe Millot to the chair of history, on the recommendation of the Duke of Nivernais. He was stranger to the intrigues which agitated the court, and, foi the benefit of his pupils, formed the plan of an abridge¬ ment of general history. Whilst he was occupied w ith this work, Felino was marked out by his enemies as an object of popular hatred, insulted in the streets of Parma, and menaced even at*the gates of his own palace. From this moment the Abbe Millot refused to quit his patron. In vain was it represented to him that the alfection he evin¬ ced for the unfortunate minister would cause him to lose is place. “ My place,” said he, “ is with a virtuous man, my benefactor, who is persecuted ; I shall not lose that at fuf: the retirement of the Marquis of Felino, the Abbe Millot returned to France, where his courageous conduct was known, and had procured him many friends. The court of Versailles, in name of that of Parma, orant- ed him a pension of four thousand francs; and, in^lTTS he was appointed preceptor to the Duke d’Enghien, a si¬ tuation for which he was indebted to the high opinion en- teitained of his character. He was about to reap the re¬ ward of his labour and pains, when he was seized with an illness, which soon carried him off in the fifty-ninth year of his age. He died on the 21st of March 1785, the same day on which, nine years afterwards, his august pupil was shot in the fosse of Vincennes. The Abbe Millot had been received into the French Academy in 1777, in the room of Cresset. His election, managed by the house of Noailles, was a transaction or compromise between the parties which then divided the academy. There was one of the mem¬ bers who qualified his suffrage by declaring that he grant- M I L ed it only upon the condition that the recipiendary should write a little better ; and D’Alembert, to tranquillize the " philosophers, who hesitated to support an abbe, said to them, “ I assure you he has nothing of a priest but the habit.” The Abbe Millot was a man of a cold and serious character; he had no love for society, seldom spoke in company, and avoided that egotism which is so tyrannical in conversation. Attentive to the discussions which were continually arising about him, he rarely took part in them ; and contradiction never ruffled his temper. Grimm, who saw him often in the society of Paris, describes his appear¬ ance as melancholy and dejected. “ Nevertheless,” adds the baron, “ he is one of the happiest beings I know, be¬ cause lie is moderate, content with his lot, and attached to his particular kind of life and labour.” D’Alembert used to cite him as the man in whom he had found the fewest prejudices and the least pretensions. The following is a complete list of his works, viz. 1. Deux Discours, one to prove that true happiness consists in making men happy, and the other, that hope is a good of which we do not suf¬ ficiently estimate the value, Lyons, 1750, in 8vo ; 2. Dis¬ cours Academiques, ibid. 1760, in 12mo; 3. Discours sur le Patriotisme Fran gats, ibid. 1762, in 8vo ; 4. Discours de Reception, Paris, 1768 and 1778, in 4to; 5. Essai sur l'Homme, translated from Pope with notes, and a discourse on English philosophy, Lyons, 1761, in small 12mo; 6. Harangues dCEschine et de Demosthene, translated into French, Lyons, 1764, in 12rno ; 7. Harangues choisies des Historiens Latins, ibid. 1764, in two volumes 12mo ; 8. Elemens de VHistoire de la France, Paris, 1769, in three volumes 12mo ; 9. Elements de PHistoire d’Angleterre, Paris, 1769, in three volumes 12mo ; 10. Elements d"His¬ toire Generate Ancienne et Moderne, ibid. 1783, in nine vo¬ lumes 12mo, a work which has been translated into the German, Danish, Dutch, English, Swedish, Italian, Spa¬ nish, and Portuguese languages ; 11. Histoire Litteraire des Troubadours, Paris, 1774, in three volumes 12mo; 12. Memoires Politiques et Militaires pour servir d l’Histoire de Louis XIV. et de Louis XV. ibid. 1777, in six volumes 12mo; 13. Extraits de PHistoire Ancienne, de PHistoire JRomaine, et de l Histoire de France, Paris, 1796, in 4to ; 14. Dialogues, et Vie du Due de Bourgogne, pere de Louis XV. Besancon, 1816, in 8vo. Other works have been as¬ cribed to Millot, but these are now known not to have been his. He was a member of the academies of Lyons, Nancy, and Chalons-sur-Marne; but that of Besancon neglected to adopt a man who did so much honour to the province, an omission which was repaired in 1814, by proposing as the subject of a prize an eloge on Millot. MILO, T. Annius, a native of Lanuvium, who attempt¬ ed to obtain the consulship at Rome by means of intrigue and seditious tumults. Clodius the tribune opposed his views; yet Milo would have succeeded but for an event which has given a collateral celebrity to his name. As he was going into the country, attended by his wife and a nu¬ merous retinue of gladiators and servants, he met on the Appian road his enemy Clodius, who was returning to Rome with three of his friends and some domestics com- pletely armed. A quarrel arose between the servants; Milo supported his attendants, and the dispute became ge¬ neral ; Clodius received many severe wounds, and was ob¬ liged to retire to a neighbouring cottage. Milo pursued his enemy in his retreat, and ordered his servants to de¬ spatch him. Ihe body of the murdered tribune was car¬ ried to Rome, and exposed to public view. The enemies of Milo inveighed bitterly against the violence and barba- nty with which the sacred person of a tribune had been treated. Cicero undertook the defence of Milo ; but the continual clamours of the friends of Clodius, and the sight o an armed soldiery, which surrounded the judgment seat, so tenified the orator, that he forgot the greater part of Milo,, M I L Milo his arguments, and the defence he made was weak and in- P judicious. Milo was condemned, and banished to Massilia. iltiades. Cicero soon afterwards sent his exiled friend a copy of the oration which he had prepared for his defence, in the form in which it now appears ; and Milo, after having read it, exclaimed, “ O Cicero, hadst thou spoken before my ac¬ cusers in these terms, Milo would not now be eating figs at Marseilles.” The friendship and cordiality of Cicero and Milo were the fruits of long intimacy and familiar in¬ tercourse. It was by the successful exertions of Milo that the orator was recalled from banishment, and restored to his friends. MILO, or Melos, an island of European Turkey, in the Archipelago. It is about sixty-six square miles in extent. It is mountainous and volcanic, and though in ancient times reported to have been populous, is now so unhealthy, that the population of less than 700 persons can only be kept up by annual emigrations from the Morea. The chief town of the same name is on the south part of the island, and is said once to have had 200 houses, but now has not so many inhabitants. Long. 24. 8. E. Lat. 36. 40. MILTIADES, son of Cypselus, an Athenian captain, who obtained a victory in a chariot race at the Olympic games. He led a colony of Athenians to the Chersonesus. The causes of this appointment are striking and singular. The Thracian Dolonci, harassed by a long war with the Absynthians, were directed by the oracle of Delphi to take for their king the first man they met in their return home, who should invite them to come under his roof and partake of his entertainments. This was Miltiades, who was very much struck at the appearance of the Dolonci, and with their strange arms and garments. He invited them to his house, and was made acquainted with the commands of the oracle. He obeyed ; and when the oracle of Delphi had a second time approved the choice of the Dolonci, he de¬ parted for the Chersonesus, and was invested by the inha¬ bitants with sovereign power. The first measures he took were to stop the further incursions of the Absynthians, by building a strong wall across the isthmus. When he had established himself at home, and fortified his dominions against foreign invasion, he turned his arms against Lamp- sacus. But his expedition proved unsuccessful; he was taken in an ambuscade, and made prisoner. His friend Croesus, king of Lydia, informed of his captivity, procured his release. He lived a few years after he had recovered his liberty. As he had no issue, he left his kingdom anti possessions to Stefagoras the son of Cimon, who was his brother by the same mother. The memory of Miltiades was greatly honoured by the Dolonci, who regularly cele¬ brated festivals and exhibited showrs in commemoration of a man to whom they owed their greatness and preser¬ vation. Miltiades, the son of Cimon, and brother of Stefago¬ ras mentioned in the preceding article, was, some time after the death of the latter, who died without issue, sent by the Athenians with one ship to take possession of the Cherso¬ nesus. On his arrival Miltiades appeared mournful, as if lamenting the recent death of his brother. The principal inhabitants of the country visited the new governor to condole with him ; but their confidence in his sincerity proved fatal to them. Miltiades seized their persons, and made himselfabsolute in Chersonesus. To strengthen him¬ self, he married Hegesipyla, the daughter of Olorus, the king of the Thracians. But his triumph was short-lived. In the third year of his government, his dominions were threatened by an invasion of the Scythian Nomades, whom Darius had some time before irritated by entering their country. Miltiades fled before them ; but as their M I L 85 hostilities were of short duration, he was soon restored to Milton, his kingdom. Three years afterwards he left Chersonesus, ^ and set sail for Athens, wdiere he was received with great applause. He was present at the celebrated battle of Ma¬ rathon, in which all the chief officers ceded the power to him, and left the event of the battle to depend upon his superior abilities. He obtained an important victory over the numberless forces of his adversaries. Some time after¬ wards Miltiades was intrusted with a fleet of seventy ships, and ordered to punish those islands which had revolted to the Persians. He was successful at first, but a sudden re¬ port that the Persian fleet was coming to attack him, changed his operations as he was besieging Paros. He raised the siege, and returned to Athens. He was ac¬ cused of treason, and particularly of holding correspond¬ ence with the enemy. The falsehood of these accusations might have appeared, if Miltiades had been able to come into the assembly. But a wound which he had received before Paros detained him at home ; and his enemies, tak¬ ing advantage of his absence, became more eager in their accusations, and louder in their clamours. He was con¬ demned to death ; but the rigour of his sentence was mi¬ tigated on the recollection of his great services to the Athenians, and he was imprisoned till he should pay a fine of fifty talents to the state. His inability to discharge so great a sum detained him in confinement; and his wounds having become incurable, he died a prisoner about 489 years before the Christian era. His bodj1' was ransomed by his son Cimon, who was obliged to borrow and pay the fifty talents, in order to give his father a decent burial. The accusations against Miltiades were probably the more readily believed by his countrymen, when they remem¬ bered how he had made himself absolute in Chersonesus. In condemning the barbarity of the Athenians towards a general who was the source of their military prosperity, we must also remember the jealousy which ever reigns amongst a free and independent people, and how watchful they are in defence of the natural rights which they see wrested from others by violence. Cornelius Nepos has written the life of Miltiades the son of Cimon ; but his his¬ tory is incongruous and unintelligible, from his confound¬ ing the actions of the son of Cimon with those of the son of Cypselus. Greater reliance is to be placed on the narra¬ tive of Herodotus, who was indisputably better informed and more capable of giving an account of the life and ex¬ ploits of men who flourished in his age, and of which he could see the living monuments. Herodotus was born about six years after the battle of Marathon; and Corne¬ lius Nepos, as a writer of the Augustan age, flourished about 450 years after the age of the father of history. MILTON, a town of the county of Kent, in the hundred of Toltintrough and lathe of Aylesford, twenty-three miles from London. It stands on the bank of the Thames, and forms the eastern part of the town of Gravesend. It is a thriving place, partly owing to being visited for bath¬ ing, as the river salts with the flood tide. It has some for¬ tifications constructed to defend the passage of the river. The population amounted in 1801 to 2056, in 1811 to 2470, in 1821 to 2769, and in 1831 to 4348. Milton, or Milton-Royal, a town of the county of Kent, in the hundred of Milton and lathe of Scray, forty miles from London. It stands at the head of a navigable creek, in a swampy situation between Seltingbourne and the river Thames. It has a corporation governed by a portreeve ; has a market on Saturday, and is principally known for the excellence of the oysters bred there. The population amounted in 1801 to 1622, in 1811 to 1746, in 1821 to 2012, and in 1831 to 2223. 86 MILTON. Milton. John Milton, the immortal author of Paradise Lost, and, excepting Shakspeare, the greatest of the English poets, was born at his father’s house in Bread Street, Lon¬ don, on the 9th, and baptized on the 20th of December 1608. Milton was by birth a gentleman, being descended from the proprietors of Milton, near Thame, in Oxford¬ shire, one of whom forfeited his estate in the times of York and Lancaster. The grandfather of the poet was under¬ ranger of the forest of Shotover, near Halton, and, being a zealous Catholic, disinherited his son because he had for¬ saken the faith of his ancestors. The father was educated as a gentleman, and became a member of Christ Church College, Oxford, where he probably imbibed those opinions which led him to change his religion, and thereby to incur disinherison. Being thus deprived of his patrimony, the father of the poet had recourse for his support to the pro¬ fession of scrivener, in the practice of which he proved so successful, that he was enabled to give his children the advantages of a liberal education, and at length to retire with comfort into the country. He appears to have been an accomplished scholar, a man of refined taste, and a great proficient in music, a circumstance to which allusion is made by his son in his beautiful poem Ad Patrem.1 He married a gentlewoman of the name of Caston, of a Welsh family, by whom he had two sons and a daughter. Chris¬ topher, the second son, was educated for the bar, and ad¬ hered to the royal cause, which at one time brought him into trouble; but soon after the accession of James II. he was rewarded with a knighthood, and appointed one of the barons of Exchequer. Anne, the only daughter, married a gentleman of the name of Philips, who rose to be secon- dary in the crown-office, and had by him two sons, John and Edward, who were educated by the poet. It is to be lamented that so little information has reach¬ ed us respecting the early life of our immortal poet. We know not for what profession his father had destined him, though it is certain that it was not the law; and we are equally in the dark regarding other matters connected with his early years. His education, however, was liberal, and the care with which it was conducted evinces the dis¬ cernment and solicitude of his father. He had the bene¬ fit both of private and public tuition. His first instructor was Thomas Young, a puritan minister of Essex, who ap¬ pears to have gained the affections of his pupil, and to have deserved the testimony which the latter has borne to his merits in an elegy and two Latin epistles. At what period this connection began or ended has not been ascertained. It seems probable that loung continued in his office until the time when, on account of his religious opinions, he with¬ drew to the continent, and became chaplain to the British merchants resident at Hamburg. Milton was then sent to &t Paul s school, at that time under the direction of Dr 1 The lines above referred to are the following, which strike us as being exceedingly beautiful £ec tu perge, precor, sacras contemnere Musas ; Aec vanas mopesque puta, quarum ipse peritus Munere, mille sonos numeros componis ad aptos ; Minibus et vocem modulis variare canoram Doctus Arionii merito sis nominis hares. • fire. Nor you affect to scorn the Aonian choir, Blessed by their smiles, and glowing with their f A ou . who by them inspired, with art profound, Can wield the magic of proportioned sound: through thousand tones can teach the voice to stray, And wind to harmony its mazy wav — Arion’s tuneful heir. Gill, and remained some time at that seminary, distinguish¬ ing himself by almost incredible progress, and giving nu- v merous indications of that gigantic intellect, the energies of which afterwards more fully developed themselves. Being thus initiated in several languages, and having already tasted the sweets of philosophy, he was, in the beginning of his sixteenth year, removed to Christ’s College, Cam¬ bridge, where he entered as a pensioner, on the 12th of February 1624. He was committed to the tuition of Mr Chappell, the reputed author of The Whole Duty of Man, and afterwards successively provost of Trinity College, Dub¬ lin, dean of Cashel, and bishop of Cork and Ross. At the time when he entered the university he was eminently skilled in the Latin language, and, by annexing dates to his first compositions, he has afforded us the means of estimating his early proficiency. At fifteen he translated or versified two Psalms (the 114th and 136th), which he thought worthy of publication, and in which may be dis¬ cerned the dawning of real genius. This is still more ap¬ parent in his poem On the Death of a Fair Infant, which displays equal vigour and sensibility. Many of his elegies appearj to have been written in his eighteenth year; and from them it is evident that he had then read the Roman authors with critical discernment. Indeed, Milton was the first Englishman who, after the revival of letters, wrote Latin verses with classical elegance. If any exceptions can be made, they are few in number. Haddon and Ascham, the pride of Elizabeth’s reign, however they succeeded in prose, no sooner attempt verses than they provoke deri¬ sion. Not many persons will, therefore, be inclined to agree with Johnson, that “ the products of his vernal fertility have been surpassed by many, and particularly by his con¬ temporary Cowley.” Milton is not only the most learned of modern poets, but his writings show him to have been a man even from his very childhood; and hence Politian, Tasso, Cowley, Voltaire, Pope, and others, who have written poetical pieces of merit at an early age, must all bow to him as to a superior spirit. He also attracted particular notice by his academical exercises, some of which were published by him in his more mature years, as well as by several poems, both Latin and English, upon occasional sub¬ jects. Although his chief object seems to have been the cultivation of his poetical talents, he neglected no depart¬ ment of literature, and, by his persevering application, be¬ came “ inured and seasoned betimes with the best and elegantest authors of the learned tongues.” He continued seven years at Cambridge, where he took both the usual degrees ; that of bachelor in 1628, and that of master of arts in 1632. Of his conduct, and the treat¬ ment which he experienced in his college, much has been asserted, and but little proved. That “ he left the university with no kindness for its institution,” may be admitted even M I L J'ilton. on the suspicious authority of Johnson. But if such a feeling existed in his mind, it must, from Johnson’s own statement, have been produced “ by the injudicious severity of his governors,” and not the result of his “ own captious per¬ verseness,” as the surly biographer has uncharitably insi¬ nuated. That Milton “ obtained no fellowship, is,” he tells us, “ certain; but the unkindness with which he was treated was not merely negative. I am ashamed to relate,” he adds, “ what I fear is true, that Milton was one of the last students in either university that suffered the public indignity of corporal correction.” Surely, injustice on the one hand, and personal outrage on the other, were not the most likely or natural means to beget “ kindness” for the institution where such wrongs had been suffered. In the violence of controversial hostility, it was also objected to Milton that he had been expelled, or, to use the words of his original accuser, “ vomited, after an inordinate and riotous youth, out of the university.” But even Johnson admits that the charge “ was apparently not true,” and it is now quite certain that it was altogether false. Some time after taking his degree in arts, he left the university, and returned to his father’s house at Horton, near Cole- brook, in Berkshire. During his residence at Horton, he frequently visited London; and this circumstance, added to a reflection on the university, contained in the first of his elegies to Charles Diodati, written about the same time, was afterwards made the occasion of charging him with having been expelled from Cambridge for some mis¬ demeanour, or with having left it in discontent because he could not obtain preferment; relinquishing his academi¬ cal studies that he might spend his time in London, fre¬ quenting the playhouses, or keeping company with lewd women. Some lines in the same composition have often been cited or referred to as giving countenance to, if not altogether proving, this imputation.1 Milton answered this calumny in his Second Defence, and his enemies had not the hardihood to repeat it. “ Here,” T O N. 87 says he, speaking of the university, “ I passed seven years Milton, in the usual course of instruction and study, with the ap-y—— probation of the good, and without any stain upon my cha¬ racter, till I took the degree of master of arts. After this, I did not, as this miscreant feigns, run away into Italy, but of my own accord returned to my father’s house, whi¬ ther I was accompanied by the regrets of most of the fel¬ lows of the college, who showed me no common marks of friendship and esteem. On my father’s estate, where he had determined to pass the remainder of his days, I en¬ joyed an interval of uninterrupted leisure, which I devoted entirely to the perusal of the Greek and Roman classics; though I occasionally visited the metropolis, either for the sake of purchasing books, or of learning something new in mathematics, or in music, in which I, at that time, found a source of pleasure and amusement. In this manner I spent five years,^ till my mother’s death. I then became anxious to visit foreign parts, particularly Italy.” Such is his own clear and distinct statement, which has never been contradicted, or at least refuted. In regard to the lines in the epistle addressed to Diodati, it must be obvious that they would never have been published if they had been conceived to contain any allusion to transactions dishonour¬ able to the writer ; and Milton himself, speaking of his ca¬ lumniator, says, “ He flings out stray crimes at a venture, which he could never, though he be a serpent, such from ony thing that I have writteti.” The fact seems to be, that he had too strong and settled a distaste for episcopacy to think of entering the church as a profession ; and that his lofty intellect and haughty spirit disdained to submit to the petty formalities and the pedantic discipline of the col¬ lege, after he had made sufficient advances in learning to be able to pursue it himself, agreeably to the dictates of his own taste and genius.2 He conceived, indeed, “ that he who would take orders, must subscribe himself slave, and take an oath withal, which, unless he took with a con¬ science that could not retch, he must either strain, per- 1 The whole support of the accusation preferred against Milton’s college life is rested upon the following passage of the elegv addressed to Diodati: Jam nec arundiferum mild cura revisere Camum ; Nec dudum vetiti me laris angit amor: Nuda nec arva placent, umbrasque negantia molles Q,uam male Phoebieolis convenit ille locus ! Nec duri libet usque minas perferre maglstri Caeteraque ingenio non subeunda meo. Si sit hoc exilium patrios adiisse penates, Et vacuum curis otia grata sequi; Non ego vel profugi nomen sortemve recust, Laetus et exilii conditione fruor. From these lines both Johnson and Warton infer that he had incurred rustication, or a temporary removal from Cambridge, with perhaps the loss of a term. The words vetiti laris, and afterwards exilium, which is twice used in reference to himself, scarcely ad¬ mit of any other interpretation. But the supposition of any immoral irregularity is excluded by many considerations. Had he been conscious of having justly incurred censure and punishment, he would never have said “ Laetus et exilii conditione fruor.” Be¬ sides, the same poem which mentions his exile, proves that it was not perpetual; for it concludes with a resolution of returning to Cambridge. His declaration that he is weary of enduring “ the threats of a rigorous master, and something else which a temper like his can ill brook,” seems to suggest the true explanation of the difficulty. Though not chargeable with immoral irregularities, he might, upon other accounts, have become obnoxious to the governors of his college. He might have offended their prejudices by the bold avowal of his puritan opinions; or he might have wounded their pride by exposing their negligent or injudicious discharge of duty ; or he might have excited their displeasure by a haughty inattention to their rules, by refusing to exchange the pleasure of banqueting on the works of Plato or of Homer, for the barren fatigue of translating a sermon, or loading his memory with cum¬ brous pages of scholastic theology. A mere technical breach of discipline is all that can be legitimately inferred or supposed ; and, from the frankness with which he has perpetuated the fact of his exile, we may be well assured that its cauce was such as gave him no shame. ' In the Apology for Smectymnuus, Milton, speaking of the universities, has afforded us the means of ascertaining his thoughts and feelings respecting these institutions. Having described many individuals of the parliament as descended from the ancient and high nobility, he adds: “ Yet had they a greater danger to cope with ; for being trained up in the knowledge of learning, and sent to those places which were intended to be the seed-plots of piety and the liberal arts, but were become the nurseries of superstition and empty speculation, as they were prosperous against those vices which grow upon youth out of idleness and superfluity, so were they happy in working off the harms of their absurd studies and labours ; correcting by the clearness of their own judgment the errors of their misinstruction; and were, as David was, wiser than their teachers. And, although their lot fell into such times, and to be bred in such places, where if they chanced to be taught any thing good, or of their own accord had learnt it, they might see that presently untaught them by the ill example of their elders." If Milton, when at Cambridge, was in the habit of speaking such plain truths as are contained in this passage, that “ nursery of superstition and empty speculation” must have withal dealt gently by the young heretic, in in¬ flicting on him no higher punishment than that of “ rustication.” 88 M I L T O N. Milton, force, or split his faith wherefore he “ thought it bet¬ ter to prefer a blameless silence before the office of speak¬ ing, bought anti begun with servitude and forswearing.” During the five years which Milton spent under his father’s roof at Horton, and which may justly be regarded as the happiest of his life, he produced some of the finest speci¬ mens of his genius; as extraordinary for their copiousness and command of early fable and history, as for the har¬ mony of their numbers, and the sublimity and purity of their conceptions. The Comm in 1634, and the Lycidas in 1637, were unquestionably written at Horton ; and there is strong internal evidence to prove that the Arcades, L'Al¬ legro, and IIPenseroso, were also composed in the same rural retreat, during this season of propitious leisure. The Mask of Comus was acted before the Earl of Bridgewater, presi¬ dent of Wales, at Ludlow Castle, in 1634 ; upon which oc¬ casion the character of the lady and her two brothers were represented by Lady Alice Egerton, then about thirteen years of age, and her two brothers, Lord Brackley and the honourable Thomas Egerton, who were still younger. The story of the piece is said to have been suggested by the circumstance of Lady Alice having been separated from her company in the night, and having wandered for some time by herself in the forest of Haywood, as she was re¬ turning from a distant visit to meet her father, tipon ins taking possession of his presidency. Comus,1 or revelry, had already been personified in a sublime passage of the Agamemnon of TEschylus ; and the jolly god had been introduced upon the English stage in a written Mask by Ben Jonson. But it was reserved for Milton to develope his form and character, to give him a lineage and an empire, and to make him the hero of one of the most exquisite dramatic poems which the genius of man has ever produced. The Comus is framed upon the model of the Italian Masque, and is certainly the noblest production of the kind which exists in any language. It is dramatic only in semblance. The finest passages are those which are lyrical in form as well as in spirit. 14 I should much commend the tragical part,” says Sir Henry Wotton, “ if the lyrical did not ravish me with a certain dorique delicacy in the songs and odes, where- unto I must plainly confess, that I have seen yet nothing parallel in our language.” It is when Milton escapes from the shackles of dialogue, and feels himself at liberty to in¬ dulge his choral raptures without reserve, that he rises above himself, and expatiates in celestial freedom and beauty. Then, to use the impassioned expressions of an eloquent writer,he seems to skim the earth, to soar above the clouds, to bathe in the Elysian dew of the rain- bovy, and to inhale the balmy odours of nard and cassia, which the musky wings of the zephyr-scatter through the cedared valleys of the Hesperides.2 The Lycidas was written to commemorate the death of Mr Edward King, the son of Sir John King, secretary for Ireland in the reigns of Elizabeth, James, and Charles. Young King was a great favourite at Cambridge, where his learning, piety, and talents had secured universal re¬ spect, and his untimely fate was deplored as a public loss. He perished by shipwreck in his passage from Chester to Ireland, the vessel on board of which he was having foun¬ dered in a calm sea at no great distance from land. In a collection of poems, published in 1638, Lycidas occupies the last, and (as it was no doubt intended to be) the most honourable place ; but we may reasonably wonder how a production, breathing such hostility to the clergy of the Church of England, and even menacing their leader with the axe, should have been permitted to issue from the uni- Milta, versity press. The guardians of the church must surely have been slumbering at their posts; or, perhaps, this poem being only part of a collection, it was not scrutinized before it went to press. The most objectionable part of the com¬ position is the speech assigned to St Peter, “ the pilot of the Galilean lake,” and it is also inferior in poetical merit to what precedes and follows it. But, taking the monody as a whole, it is indubitably instinct with high genius, and an effusion of the purest and most exalted poetry. Arcades is evidently nothing more than the poetical part of an en¬ tertainment, the bulk of which consisted of prose dialogue and machinery; yet, whatever proportion it constituted of the piece, it must have imparted a value to the whole, dis¬ playing, as it does, a kindred though inferior lustre to that which irradiates the dramatic poem of Comus. LAllegro and II Penseroso first appeared in a collection of Milton’s poems published in 1645 ; but the precise time of their production has not been ascertained. There is reason to believe, however, that they were written at Horton, in the interval between the composition of Comus and that of Lycidas ; though it is not easy to adjust the precedency between these victorious efforts of the descriptive muse. They were certainly composed in the happiest mood of the poet’s mind, when his fancy disported in glorious sun¬ shine, and no cloud or star interposed to obstruct or darken her perceptions. Milton, having lost his mother in 16:27, when he was about twenty-nine years of age, now felt himself at liberty to carry into effect a project which he had long meditated ; and having obtained his father’s concurrence, he resolved to visit foreign parts, and particularly Italy. His reason for wishing to travel in -foreign countries was, as Toland quaintly expresses it, a persuasion “ that he could not bet¬ ter discern the pre-eminence and defects of his own coun¬ try than by observing the customs and institutions of others ; and that the study of never so many books, without the advantages of conversation, serves either to render a man a stupid fool or a pedant.”3 He left England in 1638, and proceeded to Paris, whence, after a short stay, he has¬ tened to Italy, the grand object of his curiosity ; and, after an absence of a year and three months, the greater part of which was spent in that classic region, he returned home through France. The only account of his ti'avels is that furnished by himself, in his brief autobiography; and, as no one can describe Milton so well as himself, we shall give it in his own words, rather than attempt to paraphrase it, after the absurd fashion of his biographers. “ I became anxious to visit foreign parts, and particu¬ larly Italy. My father gave me his permission, and I left home with one servant. On my departure, the celebrated Llenry W otton, who had long been King James’s ambas¬ sador at Venice, gave me a signal proof of his regard, in an elegant letter which he wrote, breathing not only the warmest friendship, but containing some maxims of con¬ duct which I found very useful in my travels.4 The no¬ ble I homas Scudamore, King Charles’s ambassador, to whom I carried letters of recommendation, received me most courteously at Paris. His lordship gave me a card oi introduction to the learned Hugo Grotius, at that time ambassador from the Queen of Sweden to the French court; whose acquaintance I anxiously desired, and to whose house I was accompanied by some of his lordship’s friends. A few days after, when I set out for Italy, he gave me letters to the English merchants on my route, that they might show me any civilities in their power. ' . , 2 Edinburgh Review, vol. xlii. p. 315. 3 Life of Milton, n. 9. nia.xims 1f, th.a,t.? lk;1l)l\ian oracle” of prudence which Wotton himself had been taught by his friend Alberto bcipioni. fgnor annco mio, said the old Roman courtier, “ i pemicri stntti, cd il vuo sciollo," will go safely over the world, with¬ out offence of others, or of your own conscience. ’ M I L lilton. “ Taking ship at Nice, I arrived at Genoa; and after- “-v—-'wards visited Leghorn, Pisa, and Florence. In the latter city, which I have always particularly esteemed for the elegance of its dialect, its genius, and its taste, I stopped about two months; when I contracted an intimacy with many persons of rank and learning, and was a constant at¬ tendant at their literary parties; a practice which prevails there, and tends so much to the diffusion of knowledge and die preservation of friendship. No time will ever abolish the agreeable recollections which I cherish of Ja¬ cob Gaddi,1 Carolo Dati,2 Frescobaldo, Cultellero, Bono- mathai, Clementillo, Francisco, and many others. From Florence I went to Sienna, thence to Rome ; where, after I had spent about twm months in viewing the antiquities of that renowned city, where I experienced the most friendly attentions from Lucas Holstein,3 and other learn¬ ed and ingenious men, I continued my route to Naples. There I was introduced, by a certain recluse with whom I had travelled from Rome, to John Baptista Manso, mar¬ quis of Villa, a nobleman of distinguished rank and autho¬ rity, to whom Torquato Tasso, the illustrious poet, in¬ scribed his book on Friendship.4 During my stay, he gave me singular proofs of his regard ; he himself conducted me round the city, and to the palace of the viceroy ; and more than once paid me a visit at my lodgings. On my departure, he gravely apologised for not having shown me more civility, which he said he had been restrained from doing, because I had spoken with so little reserve on mat¬ ters of religion. “ When I was preparing to pass over into Sicily and Greece, the melancholy intelligence which I received of the civil commotions in England, made me alter my pur¬ pose ; for I thought it base to be travelling for amusement abroad, while my fellow-citizens were fighting for liberty at home. While I was on my way back to Rome, some mer¬ chants informed me that the English Jesuits had formed a plot against me, if I returned to Rome, because I had spoken too freely of religion ; for it was a rule which I laid down to myself in those places, never to be the first to be¬ gin any conversation on religion ; but if any questions were put to me concerning my faith, to declare it without any reserve or fear. I nevertheless returned to Rome. I took no steps to conceal either my person or my charac¬ ter ; and for about the space of two months I again open¬ ly defended, as I had done before, the reformed religion, in the very metropolis of Popery. “ By the favour of God I got back to Florence, where I was received with as much affection as if I had returned to my native country; thei’e I stopped as many months as I had done before, except that I made an excursion of a few days to Lucca, and crossing the Apennines, passed through Bologna and Ferrara to Venice. After I had spent a month in surveying the curiosities of this city, and had put on board a ship the books which I had collected TON. 8! in Italy, I proceeded through Verona and Milan, and along Milton, the Leman Lake to Geneva. '"““'“v-—” “ I he mention of this city brings to my recollection the slandering More,5 and makes me again call the Deity to witness, that in all those places where vice meets with so little discouragement, and is practised with so little shame, I never once deviated from the paths of integrity and virtue ; and perpetually reflected, that, although my conduct might escape the notice of men, it would not elude the inspection of God. At Geneva I held daily conferences with John Diodati, the learned professor of theology. “ Then, pursuing my former route through France, I returned to my native country, after an absence of about one year and three months, at the time when Charles, having broken the peace, was renewing what is called the Episcopal war with the Scots ; in which the royalists be¬ ing routed in the first encounter, and the English being universally and justly disaffected, the necessity of his aftairs at last obliged him to convene a parliament.”6 Upon his return to England, Milton, it seems, could dis¬ cover no way in which he might directly serve the cause of the people. He was not formed for participating in the rough and fierce encounters of the field; he wanted both the means and the connections necessary to enable him to take any share in the management of public affairs; and the time had not yet arrived, in the development of the drama, when the part which alone he was eminently quali¬ fied to sustain could be brought upon the stage. He therefore hired a house in St Bride’s Church-yard, and re¬ newed his literary pursuits, calmly awaiting the issue of the contest, which he trusted “ to the wise conduct of Provi¬ dence, and to the courage of the people.” Here he con¬ sented to receive as pupils his two nephews, John and Ed¬ ward Philips ; and subsequently, yielding to the importu¬ nities of some intimate friends, he added to their number. Finding his apartments too small, he now took a house in Aldersgate Street, where he received more boys, and in¬ structed them in Latin, Greek, and Hebrew, with its dia¬ lects, as well as in mathematics, cosmography, history, and some modern languages, particularly French and Italian. “ This,” says Dr Johnson, “ is the period of his life from which all his biographers seem to shrink. They are un¬ willing that Milton should be degraded to a schoolmaster; but since it cannot be denied that he taught boys, one finds out that he taught for nothing, and another that his mo¬ tive was only zeal for the propagation of learning and vir¬ tue ; and all tell what they do not know to be true, only to excuse an act which no wise man will consider as in itself disgraceful. His father was alive ; his allowance was not ample ; and he supplied its deficiencies by an honest and useful employment.”7 Milton, in his little'circle of scho¬ lars, was usefully if not splendidly employed ; and no man of sense can suppose that, whilst he was occupied in pro- •* The historical painter. - A Florentine nobleman, author of an Essay on the Discoveries of Galileo, and of Lives of the Ancient Fathers.] 3 The librarian of the Vatican. 4 this nobleman composed a Latin distich, which he addressed to Milton : LTt mens forma, decor, facies mos ; si pietas sic, 5 Non Anglus, verum, hercle, Angelus ipse fores. The Clamor Regii Sanguinis ad Ceelum to which the Defensio Secunda pro Copula Anglicano (whence the above passage is extracted) was the answer, is now known to have been written by Peter du Moulin ; but having been published by Alexander Morus or More, it was at first supposed to have been the production of that individual. ® Prose Works, edited by Fletcher, pp. 993, 996. 7 The strong good sense of these observations contrasts forcibly with the unwieldy £‘ merriment” of Johnson “ on great promises and small performance ; on the man who hastens home, because his countrymen are contending for their liberty, and, when he reaches the scene of action, vapours away his patriotism in a private boarding-school.''’ The sneer contained in these words is characteristic only of the writer by whom they are employed, and whose bad feeling towards the author of Paradise Lost shows itself on so many occasions. Milton’s “ patriotism,” as we shall soon find, wras not so volatile as to evaporate even under the hardest trials of adversity ; and he will be honoured and revered for his steady and consistent attachment to liberty, long after the rhetorical exaggerations of his enemies have sunk into merited oblivion. VOL. xv. M MILTON. moling the highest interests of some of his species, he was degrading himself in the estimation of the rest. Toland has described the nature of the education which he aimed at bestowing upon his pupils, and which involved a great innovation upon the established practice. In this, as in many other respects, Milton appears to have been great¬ ly in advance of his age. His purpose wras to teach some¬ thing more solid than the common literature of the schools; to expand the faculties and to inform the judgments of his pupils, by combining the knowledge of things with that of words, instead of subjecting them to the irksome and com¬ paratively useless task of acquiring the mere knowledge of words, without any adequate conception of those ideas or objects of which they are the representatives. Not con¬ tent with those books which are commonly used in the schools, he placed in the hands of his disciples such an¬ cient works as were capable of affording information in va¬ rious departments of science; and “a formidable list” is given of the authors, Greek and Latin, which w’ere read in Aldersgate Street, by youth between fifteen and sixteen years of age. That he perhaps attempted to do more than any degree of diligence or industry could accomplish, may be admitted without impeaching the soundness of the prin¬ ciple upon which he proceeded; and although “ nobody can be taught faster than he can learn,” yet it is at least equally certain, that some teachers can make young men learn much faster than others, and that, in general, the com¬ parative progress of the pupil is a pretty fair measure of the diligence and skill of the master. He set his pupils an ex¬ ample of close application and spare diet; indeed absti¬ nence was one of bis favourite virtues, which he practised invariably through life ; and the only indulgence which he allowed himself was passing a day of temperate festivity once in three weeks or a month.1 “ One part of his sys¬ tem,” says Johnson, “ deserves general imitation. He was careful to instruct his scholars in religion. Every Sunday was spent upon theology, of which he dictated a short sys¬ tem, gathered from the writers that were then fashionable in the Dutch universities.” But whilst Milton’s occupation as a teacher preserved his familiarity with the Greek and Roman authors, it pre¬ cluded him from discharging what he conceived to be his duties as a citizen, and defeated the patriotic object which had recalled him from the shores of Sicily and Greece. From his first acquaintance with the struggles of his coun¬ try, he had determined to devote himself to her service; and the time seemed,now to have arrived for carrying his pur¬ pose into effect. Conscious of his own strength, and sen- Miltc sible that genius, armed with knowledge, would prove a ''—'V' more powerful auxiliary to the popular cause than if he had carried ten battalions into the field, he decided in fa¬ vour of the pen against the sword, and took his position on ground whence no adversary was able to dislodge him. The long parliament, representing a nation alarmed and irritated by many flagrant abuses of power, had now as¬ sembled, and evidently possessed a strong sympathy with the public feeling. The king’s violent conduct to former parliaments, in imprisoning refractory members, one of whom had died under the length and rigour of his confine¬ ment; his unconstitutional attempts to govern by preroga¬ tive alone ; his arbitrary exactions in violation of all law ; and the severe sentences with which his council and his courts abetted and enforced his reckless despotism ; these and many other causes had concurred in alienating the af¬ fections of all orders of the community, and preparing their minds for resistance and innovations. The leaders of the church party imitated the despotic policy of the court; and their rigorous persecution of the puritans, offensive alike to the feelings of the humane and the common sense of the enlightened, excited against them the fears of the good and the jealousies of the wise. The power of the episcopal courts had been everywhere urged into unusual activity by the superintendence and incitement of the high commission ; and almost every diocese had witnessed scenes of rigour similar to those which had at once dis¬ graced and exasperated the capital.2 There were not wanting in the church some men of learning and piety ; at this unfortunate crisis she could boast, amongst her prelates, of a W illiams, a Davenant, a Hall, and an Usher ; but at their head was placeed the domineering and into¬ lerant Laud, a man of narrow views, unrelenting zeal, and abject superstition, who, unrestrained by any considera¬ tions of prudence, took care on every occasion to magnify the regal authority, and sought by all possible means to extend that tyranny which supported his own.3 * Milton, a diligent and attentive observer of all that was passing around him, having discerned in the church the source of much of the political and social evil which had as¬ sumed so frightful an aspect, as well as the grand engine of oppression in the hands of the king, now came to the resolu¬ tion of taking an active part in the rude conflict of affairs. -The moment was propitious for an assault upon the prelacy. The parliament had impeached the bigoted and persecut- ing primate ; they had rescued his victims from their dun- 1 This day was allotted to the society of some young and gay friends : according m Inline,™ u . „ ... gentlemen of Gray’s Inn.” But, as Dr Symmons observes the gav men nf tl™ nnnL n’ WaSi ufVa 7 sPent with some gay the revellers of that which succeeded it, when the profligacy ofVshameless court snreadVk^f b.abl®*in e^cess’ compared with ing life and manners as well as literature with a debasing immorality ■ and when modest v 11 contaglon throughout the land, taint- nance by wild riot and obstreperous vice. ^ ^ au< temperance were hooted out of counte- 3 Symmons’s Life of Milton, p. 215. J •*?** by representing him as “ virtuous” admits, however, that he led the king “into a conduct which proved fetal to himsdfand'tThk't''"", h°n"St p,u,'J,ose?' llT*!e historian tended to a most popish state of ceremonies in worship, and tvrannv -md mtr,i a”d to his kingdom ; and that ‘ all his measures more particular if her description of Laud’s arbitra^VS,"”'! InvmeTT” •, Hutch!™, has been laws of the land satisfied not,” says that incomparable woman • “ if anv dhrst- ,r. t f^ m.ent °f Uvl1 ?be<^ience to the king and the presently reckoned among the seditious and disturbers of the public ne-ico md nn lb{,l!te , 18 impositions in the worship of God, he was honesty of the kingdom, or the griping of the poor, or the unius^ ; if ^ were Srieved at the dis- the riots of the courtiers, and the sw arms of needy sTots^heTinVh^bmught inm d^f ^ rl a1thoufan1d “tented to maintain a puritan ; if any, out of mere morality or civil honesty discoun wlm .T'S k d .•Ur ^ locusts the Plenty of this land, he was he conformed to their superstitious worship ; if any showed favour to anv rrnd? 0™inat;ions H those days, he was a puritan, however in want, or protected them in violent or unjust oppression, he was a nurfifn • Tc ‘°nest Porsons> kept them company, relieved them laws of the land, or stood up for any public interest, for good order or government ynSent eman ^ hlS (:ountr.f maintained the good views of the needy courtiers, the proud encroaching priests, the thievish nmiertm-c’ ri Pu1r.1,tan ? ln short, all that crossed the ous for God’s glory or worship, See. were puritans; and if puritans, then enemies tnHm K d nobd!ty and Sentr>% whoever was zeal- hypocrites, ambitious disturbers of the public peace, and, finally the nest of tP v i ff’ atc blS g°vernment, seditious, factious, made them the sport of the pulpit, which was become but a more solemn sort of smim . n f ' As such’” she adds. “ they not only puppet-play, belched forth profane scoffs upon them ; the drunkards made them fi10S ’ bUt eyei7,'stage, and every table, and every them, as finding it a most gameful way of fooling.” (Memoirs of Colonel Hutchimon, ro°L PppM^lS 124 learned t0 abuSe M ALTON. Iton. geons, recalled his exiles to behold his fall, released the “Y—'press from its “ horrid silence,” and permitted it to pour out its long-imprisoned vengeance on the heads of the op¬ pressor and his followers. “ The rigour of the parliament,” says Milton, “ had begun to humble the pride of the bi¬ shops. As long as the liberty of speech was no longer subject to control, all mouths began to be opened against the bishops ; some complained of the vices of the indivi¬ duals, others of those of the order. They said it was un¬ just that they alone should differ from ail other reformed churches, and particularly the word of God. This awa¬ kened all my attention and my zeal: I saw that a way was opening for the establishment of real liberty; that the foundation was laying for the deliverance of man from the yoke of slavery and superstition ; that the principles of re¬ ligion, which were the first objects of my care, would ex¬ ert a salutary influence on the manners and constitution of the republic ; and as I had from my youth studied the distinctions between religious and civil rights, I perceived that, if I ever wished to be of use, I ought at least not to be wanting to my country, to the church, and to so many of my fellow Christians, in a crisis of so much danger. I therefore determined to relinquish the other pursuits in which I was engaged, and to transfer the whole force of my talents and my industry to this one important object.” Influenced by these views, Milton emerged from his soli¬ tude, and took up his weapon for his country.1 In 1641 appeared the first of his works, which was en¬ titled, Of Reformation touching Church Government in Eng¬ land, and the Causes that have hitherto hindered it. This treatise consists of two books, the object of which is to de¬ monstrate the proposition that prelacy is essentially inimi¬ cal to civil liberty. In the opinion of the author, the refor¬ mation in the church had not proceeded to the proper ex¬ tent ; and the suspension of its progress he attributes principally to its prelates, “ who, though they had re¬ nounced the pope, yet hugged the popedom, and shared the authority among themselves.” He declares, with im¬ pressive solemnity, that wherever, in this book, he has laid open the faults and blemishes of fathers, martyrs, or Chris¬ tian emperors, he has done so “ neither out of malice, nor list to speak evil, nor any vain glory, but of mere necessity to vindicate the spotless truth from an ignominious bond¬ age.” In prosecution of this grand object he displays a profundity of learning, a vigour of reasoning, an earnest¬ ness of purpose, an impassioned eloquence of style, and a comprehensive grasp of his subject, which must ever ex¬ cite admiration ; indeed, the work is throughout one con¬ tinued strain of wisdom and eloquence. The bishops, of course, receive no quarter at his hands. He tears the Milton, veil of hypocrisy from their hearts ; exposes their worldly- mindedness and love of pelf and power ; and having ani¬ madverted on the conduct of the prelacy in former times, he pourtrays, with unsparing severity, its character in his own,2 3 reproving the unconcern with which the bishops ex¬ torted large incomes from the nation, as well as the pro- fligacy with which they expended their revenues, and con¬ tending that prelacy is one of those forms of evil which are “ the same yesterday, and to-day, and for ever.” To this and other attacks from the pens of puritan writers, Hall, bishop of Norwich, replied in An Humble Remonstrance to the High Court of Parliament; and about the same time Usher, archbishop of Armagh, published The Apos¬ tolical Institution of Episcopacy. In answer to these able and learned works, Milton wrote two pieces, one of them entitled Of Prelatical Episcopacy, and the other, The Rea¬ son of Church Government urged against Prelacy? He had now entered fairly into this great controversy, and he was not disposed to shrink from the labour or the respon¬ sibility of carrying it on. “ When two bishops of supe¬ rior distinction,” he observes, “ vindicated their privileges against some principal ministers, I thought that, on those topics, to the consideration of which I was led solely by my love of truth, and my reverence for Christianity, I should probably not write worse than those who were con¬ tending only for their own emoluments and usurpations.” Nor did he form an erroneous or exaggerated estimate of his own powers. These productions of Milton, distinguish¬ ed by vigour, acuteness, and erudition, were unquestion¬ ably the most able, eloquent, and learned on the puritan side of the controversy. But the publication which ap¬ pears to have attracted most attention at the time was a pamphlet, the joint production of five presbyterian di¬ vines, under the appellation of Smectymnuus, a word formed from the initial letters of the name of the authors.4 To this production Bishop Hall replied in a Defence of the Remonstrance; and Milton’s formidable pen, again em¬ ployed in opposition to the prelates, produced Animad¬ versions on the Remonstrant's Defence, a work which is thrown into the form of a dialogue between the remon¬ strant and his antagonist, who answers him. “ Why this close and succinct manner was rather to be chosen,” says the author, “ this was the reason; chiefly that the ingenious reader, without further amusing himself in the labyrinth of controversial antiquity, may come to the speediest way to see the truth vindicated, and sophistry taken short at the first bound.” In this production the replies are al¬ ways severe, frequently jocose; and there prevails through- 1 It was not from moral cowardice, as Johnston has insinuated, that Milton preferred the pen to the sword, the closet to the field. “ I did not,” says he in his Defensio Secunda, “ for any other reason decline the dangers of war, than that I might in another way, with much more efficacy, and with not less danger to myself, render assistance to my countrymen, and discover a mind neither shrink¬ ing from adverse fortune, nor actuated by any improper fear of calumny or of death. Since, from my childhood, I had been devoted to the more liberal studies, and was always more powerful in my intellect than in my body, avoiding the labours of the camp, in which any robust common soldier would have surpassed me, I betook myself to those weapons which I could wield with the most effect; and I conceived that I was acting wisely when I thus brought my better and more valuable faculties, those which constituted my princi¬ pal strength and consequence, to the assistance of my country and her honourable cause.” Can any one read this without assenting to its justice, or admiring the motives which determined the choice of the immortal writer ? 2 Here is the process for transforming a modern into a primitive bishop. “ He that will mould a modern bishop into a primi¬ tive, but yield him to be elected by the popular voice, undiocesed, unrevenued, unlorded, and leave him nothing but brotherly equa¬ lity, matchless temperance, frequent fasting, incessant prayer and preaching, continual watchings and labours in his ministry ; which, what a rich booty it would be, what a plump endowment to the many-benefice-gaping mouth of a prelate, what a relish it would give to his canary-sucking and swan-eating palate, let old Bishop Mountain judge for me.” {Prose Works, p. G.) 3 In this book, he discovers, not with ostentatious exultation, but with calm confidence, his high opinion of his own powers ; and promises to undertake something, which may prove both useful and honourable to his country. “ This,” says he, “ is not to be ob¬ tained but by devout prayer to the Eternal Spirit, that can enrich with all utterance and knowledge, and sends out his Seraphim with the hallowed fire of his altar, to touch and purify the lips of whom he pleases. To this must be added, industrious and select read¬ ing, steady observation, and insight into all seemly and generous arts and affairs ; till which in some measure be compass’d, I refuse not to sustain this expectation.” What can be more noble or more affecting than the aspiration here breathed out, in prophetic an¬ nouncement of the imperishable monument which he was destined to raise, and upon which his name and fame were to be written in characters of unextinguishable glory ! It seems to have moved even the obduracy of Johnson. “ From a promise like this,” says he, “at once fervid, pious, and rational, might be expected the Paradise Lost.” 4 Stephen Marshal, Edward Calamy, Thomas Young, Matthew Newcommen, and William Spurstow. 92 MIL Milton, out the piece a sort of grim smile of derision, which shar- v—pens and aggravates the severity. These various publica¬ tions were written in the course of one year, 164il, when their author was only thirty-three years of age, and occu¬ pied with the fatiguing duties of an instructor of youth ; a circumstance which cannot fail to excite wonder at the unwearied industry, the ready application of various know¬ ledge, and the exuberant fertility of mind, which are dis¬ played in their composition. In the beginning of 1642, the Ammadversiojis, which are unquestionably personal and offensive, elicited a reply that was supposed to emanate from a son of the insulted bishop, and appeared under the title of a Modest Confuta¬ tion of a Slanderous and Scurrilous Libel. If this reply had been published with its author’s name, the motive would probably have atoned with Milton for its virulence. But the publication was anonymous ; and in it Milton was not only treated with contumely and insult, but assailed with enormous falsehoods, random accusations, and the most rancorous personal vituperation. He was, however, “ dauntless, defiant, and, when insulted, fierce.” In his Apology for Smectymnuus, the result of this accumulated provocation, he proved himself a match for his adversaries even at their own weapons, and, what is of more import¬ ance, successfully vindicated his character from the foul imputations which had been cast upon it. On this occa¬ sion, there was every excuse for the warmth of Milton’s reply, and the unscrupulous vigour with which he poured his overwhelming sarcasms on his assailants. He had been accused of lewdness and sensuality; other crimes had been darkly hinted at; and his fellow Christians had been called upon “ to stone the miscreant to death.” Be¬ sides, he knew that others were partakers of his adversary’s sins ; that the latter was but the organ or mouthpiece of the episcopal order; and that, in the most bitter and ma¬ lignant aspersions of his character, his reviler had their approbation and concurrence. This naturally turned the edge of his weapon against the bishops, to whom he never misses an opportunity of expressing his hostility. In fact, it was as much out of his power to alter or soften the style in which he wrote, as to dissolve the groundwork of na¬ ture which God has created in him. It was the full re¬ flection of his very soul, whatever might be the state of its emotions ; a mirror which showed the various workings of that great and glorious spirit with which God had en¬ dowed him. In noticing the charge, that he had been “ vomited out of the university,” he keenly remarks, “ Of small practice were the physician who could not judge, by what she and her sister have of long time vomited, that the worser stuff she strongly keeps in her stomach, but the bet¬ ter she is ever keeking at, and queasy; she vomits now out of sickness; but before it be well with her, she must vomit with strong physick.” The picture he draws of the university-men is marked with equal severity. “ What with truanting and debauchery,’’ says he, “ what with false grounds, and the weakness of natural faculties in many of them, perhaps there would be found among them as many unsolid and corrupted judgments, both in doctrine and life, as in any other two corporations of the like bigness. This is undoubted, that if any carpenter, smith, or weaver, were TON. such a bungler in his trade, as the greater number of them Milton, are in their profession, he would starve for any custom; and should he exercise his manufacture as little as they do their talents, he would forget his art; or, should he mis¬ take his tools as they do theirs, he would mar all the work he took in hand.’’1 Dr Symmons, with the natural bias of a churchman, thinks that “ the learning of Usher, and the wit of Hall, prepon¬ derated in the contestand that this, he says, “ seems to have been felt not only by the Smectymnuan divines, but by Milton himself.” As to the former part of this judg¬ ment, it is matter of opinion and taste, in regard to which different men will come to different conclusions; though, if the balance of learning and wit was on the side of the prelates, the balance of genius and eloquence was decided¬ ly on that of the puritans. Nor, on the other hand, have we been able to discover any indications which would lead us to infer that Milton was really sensible of the “ prepon¬ derance” here somewhat gratuitously ascribed to his oppo¬ nents. So far from this, there is evidence to show that his conviction was directly the contrary of that here imputed to him. From a just confidence in his own powers, he assumes and maintains throughout a tone of lofty supe¬ riority, and vindicates his title to pre-eminence, by the un¬ rivalled ability and eloquence with which he repulses the assaults of his adversaries, and defends what he believes to be the cause of truth and of God. And the impression made by his writings was commensurate with their power. When he first directed his attention to the evils growing out of the church, there was a strong public feeling against it; but that feeling was vague, and, wanting direction, was expending itself in useless declamation. Milton, and those who laboured with him in the same cause, turned it into a definite channel, and rendered it productive of great and important results.2 We may admire the abilities of Usher and of Flail, and even admit, with Dr Symmons, that if the church, at this crisis, could have been upheld, it would have been supported by these prelates ; but the evils grow¬ ing out of the system were too great, the abuses and cor¬ ruptions were too gross, the tyranny exercised was too fla¬ grant and exasperating, to be shielded or upheld by any ta¬ lents, especially when laid bare, in all their hideous defor- rohy, by the unsparing hand of so formidable an adversary as Milton. We come now to an event in Milton’s life which had a material influence on his domestic comfort, and gave a new direction to his literary labours. This was his marriage, in 1648, to Mary, eldest daughter of Mr Richard Powell, of Forest Hill, near Shotover, in Oxfordshire. His choice seems to have been the suggestion of fancy alone, and its consequences were such as might have beerf expected from so imprudent a connection. The lady was brought to London by her husband, w ho placed her at the head of his frugal establishment, and expected, no doubt, to enjoy all the delights of conjugal happiness. But in this he was destined to be cruelly disappointed. The lady, who was of a royalist family, and accustomed to the affluent hospitality of her father’s house, appears to have had no relish for the pleasures of spare diet and hard study ; for, as Philips re¬ lates, “ having for a month led a philosophic life, after 1 Prose Works, p. 92. * In December 1640, a petition was presented to the House of Commons, signed by fifteen thousand citizens of London, praying the legislature to suppress the archbishops and bishops. Early in 1641, a bill was passed by the Commons “to restrain bishons and others in holy orders, from intermeddling in secular affairsit was sent up to the Lords on the 1st of May and havimr met with great opposition, was finally rejected. A bill was now introduced, and by a large majority read a second timSk the CoZo“f “ for the utter abolishine and taking away of all archbishons. bishons. their ^ m th^ C:ommons\ tor the utter abolishing and taking away of all archbishops, bishops, their cha'„cello?s andJcom"missaries deans dTans and chaTeTdtant! er under officers, out of the church of England.” On the 5th of February 1642, this bill paid the House of .dth of the same month it received the roval nsseni • o ., p -sea tn ise ers, canons, and other Lords, and on the 14th of the same month it received the royal assent. So rapid was the progression kf‘Bi^a^ t^e ^c^ dust °f WhlCh Ml1 °n ha<1 ^ d US COmmanding talents and e-otiuence. By one fell blow the hierarchy was levelled with the MILTON. 93 lilton. having been used at home to a great house, and much com¬ pany and joviality, her friends, possibly by her own desire, made earnest suit to have her company the remaining part of the summer; which was granted, upon a promise of her return at Michaelmas.” The time fixed arrived, but the lady did not appear, and Milton wrote a letter urging her immediate return. The letter remained unanswered, and several others which followed were treated in the same manner. Incensed at such conduct, her husband at length despatched a messenger to her father’s house, with instruc¬ tions to bring her to London. But this also failed. The messenger was rudely dismissed, and the wife remained with her friends. The prosperous fortunes of the king, whose forces had defeated those of the parliament under Fairfax and Waller, probably emboldened the Powells, who were cavaliers, to take this mode of breaking off the alliance. Such, at least, is the conjecture of Dr Symmons. Milton was not of a temper to submit patiently to in¬ justice aggravated by insult. He resolved to repudiate his wife, upon the grounds of disobedience and desertion ; and to justify this step to the world, he published, in 1644, The Doctrine and Discipline of Divorce, which he inscribed to the parliament. This treatise was soon followed by the Judgment of Martin Bucer concerning Divorce ; and, next year, by Tetrachordon and Colasterion, the last being a reply to an anonymous antagonist. In these writ¬ ings, he argued the question with very great ingenuity,1 but made few converts, and even incurred the censure of a body whom he had sought to propitiate. No sooner had they appeared than the fury of the presbyterian clergy was kindled against the author. Unmindful of the recent and important services which he had rendered them, they now assailed him, from the pulpit and the press, with violent and acrimonioos hostility. They even endeavoured to make the legislature the instrument of their vengeance, and ac¬ tually caused him to be summoaed before the House of Lords. But from that tribunal he was honourably dis¬ missed ; and all that the Presbyterians gained by their ill-timed zeal was the loss of an able friend, and the ex¬ citement of a dangerous enemy. Milton was now irrevo¬ cably alienated from their cause. He had discovered that these pretended'zealots of liberty sought only their own aggrandisement, and the power of imposing upon others that very yoke which they had themselves been unable to bear. Milton certainly entertained the opinions he professed ; and, to evince his consciousness of freedom, he proceeded to pay his addresses to a beautiful and accomplished young woman, the daughter of a Dr Davis, who seems to have entertained his suit. This alarmed his wife and her rela¬ tions, who, finding that Milton was not an unresisting suf¬ ferer of injuries, now became anxious for a reconciliation ; and they were probably the more sincere in their desire, that, from the desperate situation of the royal cause, which had been ruined by the decisive battle of Naseby, they began to be sensible that they might need his protection. The plan for the accomplishment of their purposes was conceived and executed with successful ingenuity. Com¬ bining with Milton’s friends, who concurred in the wish for a reconciliation, they watched his visits ; and, when he was in the house of a relation, they stationed his wife in an inner apartment, with instructions to appear at the pro¬ per time, and to implore his pardon on her knees. The Milton, lady enacted her part to admiration, throwing herself at''■“’■'v'""" his feet, confessing her fault, and with tears entreating his forgiveness. For a moment Milton appeared to be inex¬ orable ; but his firmness soon gave way, and yielding to the impulse of hjs own generous nature, he raised her from the ground, consented to forget the past, and took her home to his bosom and affections. Nor was this all. He extended his placability to those who had been the abet¬ tors, if not the instigators, of his wife’s desertion ; and re¬ ceiving her father and her brothers under his roof, he sup¬ ported them by the fruits of his labours in their day of danger and distress. In this asylum they remained until, by his influence and exertions, the question respecting their property was adjusted with the government in the year 1647. The same year, 1644, which saw Milton immersed in the controversy about divorce, beheld him also imparting to the world his ideas on the subject of education, and defending, with matchless power, the freedom of the press. His Tractate on Education is addressed to Mr Samuel Hartlib, to whom Sir William Petty afterwards inscribed one of his early works, and who was equally distinguished for his learning and public spirit. Its object is to demon¬ strate the folly of devoting seven or eight years of the life of youth to the “ scraping together of so much miserable Latin and Greek as might be learned otherwise easily and delightfully in one;” and also to show that it is practi¬ cable to initiate young students into science and language by the same process, making a knowledge of things the immediate result of an acquaintance with words. Milton did not, like some ignorant modern innovators, propose to discard the study of the classics from his plan of education. What he aimed at was far more rational; namely, to econo¬ mize the expenditure of time, and to combine the learning of languages with the acquisition of some knowledge of lo¬ gic, rhetoric, ethics, politics, law, theology, criticism, com¬ position, and the elements of the physical sciences, thus rendering the one, as it were, administrative to the other. The plan, as sketched by Milton himself, is perhaps con¬ structed upon too magnificent a scale ; indeed it is not a scheme for private individuals to attempt to carry into ef¬ fect ; but an enlightened government, with the vast col¬ legiate resources of England at its disposal, might, with¬ out injuring existing establishments, erect in every county an academical institution, as the platform of a system which is unquestionably based upon solid principles. All the recent improvements in education, which can properly be considered as such, more particularly the attempts which have been partially made to combine with the study of the classics the acquisition of useful knowledge, are to a certain extent a practical recognition of the soundness of those principles; and there can be little doubt, we think, that time and experience will show the propriety, if not the necessity, of carrying this combination farther, and rendering it closer and more intimate than has yet been judged expedient by the instructors of youth, a class of men who, however willing to teach, are commonly slow to learn. But, in point, ability, and eloquence, the Fractate on Education, with all its merits, was surpassed by another composition produced about the same time, and addressed 1 The treatises on divorce are equal to any which Milton ever wrote. Every page is strewed with felicities, jnd shnies with a lustre unsurpassed bv himself on happier though perhaps not more interesting themes. He makes out a strong case, snu tights with arguments which are’ not easily to be repelled. The whole context of the Holy Scriptures, the laws of the first Christian emperors, the opinions of some of the most eminent amongst the early reformers, and a projected statute of Edward VI., are adduced by him for the purpose of demonstrating, that, by the "laws of God, and by the inferences of the most virtuous and enlightened men, he power of divorce ought not to be rigidly restricted to those causes which render the nuptial state un i mt u , o. w uci am i wi a spurious offspring. Regarding mutual support and comfort as the principal object of this union, he maintains, that whatever defrau s it of these ends, essentially vitiates the contract, and must necessarily justify its dissolution. And, upon the assumption that mar¬ riage is nothing more than a mere contract, this reasoning appears to be unanswerable. 94 MILTON. Milton, to the parliament under the title of A reopagitica, or a Speech for the Liberty of unlicensed Printing. The Presbyterians, it appears, on rising into power, speedily forgot the prin¬ ciples which they had professed in adversity; and, declar¬ ing against unlimited toleration, discovered, by their readi¬ ness to abridge the rights of others, that their tenderness was only for their own. The press was too powerful an engine not to be seized by these selfish monopolists of li¬ berty. Intolerance had now changed its garb and deno¬ mination ; instead of a cassock and lawn sleeves, it appear¬ ed in the plainer attire of a Geneva gown and band; but the essential spirit remained the same. Hence, the very men who had so indignantly complained of restraints on the press, when imposed by the church, lost no time in subjecting it to the most rigorous censorship when it pass¬ ed into their own hands. They accordingly revived the imprimatur of the Star-chamber, and expurgated every book of every word and phrase which accorded not with their taste, or jarred with their peculiar notions. Against this monstrous grievance, the offspring of tyranny and apos- tacy, Milton advanced as the champion of free discussion; and never was a good cause more powerfully defended. The Areopagitica is, beyond all doubt, one of his finest and noblest compositions; admirable in style, irresistible in reasoning, and unsurpassed in eloquence.1 In fact, its ar¬ guments, which are individually strong, derive so much force from their mutual support in a close and advantageous array, as imperiously to compel conviction. But this splen¬ did effort, in which Milton appears to have concentrated all the powers of his great mind, proved unavailing. The Presbyterians were too sensible of the utility of a censor¬ ship to be moved by any thing that could be advanced against it, and the powerful reasoning of the Areopagitica was urged in vain. If the parliament, however, remained obdurate, the impression produced on individual minds was strong and lasting, Gilbert Mabbot, one of the licensers, resigned his situation, defending his conduct and motives from the work in question ; and Cromwell was so moved by it, that during his protectorate he abolished the censor¬ ship of the press. In 1045, Milton prepared an edition of his miscellaneous poems in English, Latin, and Italian, which appeared with the author’s name, and a preface by the publisher, Hum¬ phrey Moseley. The principal pieces in this collection have already been incidentally noticed ; the novelties con¬ sist chiefly of sonnets, in which, more perhaps than in any of his other compositions, the peculiar character of Milton is displayed. These remarkable poems have been under¬ valued by critics who have not understood their real na¬ ture. 4 hey have neither epigrammatic point nor antithe¬ tical contrasts. There is none of the -refined ingenuity of Filiaja in thought; none of the hard and brilliant enamel of Petrarch in the style. They are simple but majestic records of the feelings of the poet, expressed with as little apparent effort or elaboration as if they had been set down in his diary. A victory, an unexpected attack upon the city, a momentary fit of exultation or depression, a jest thrown out against one of his own books, a dream that for a moment restored to him the vision of that beautiful face over which the grave had heaped its undistinguishing mould, all led him to musings which spontaneously arranged themselves in verse. Hence the sonnets are more or less striking, according as the occasions out of which they sprung are more or less interesting. That which he wrote “ when the assault was intended to the city,” and those addressed to Cyriac Skinner, Fairfax, Vane, and Cromwell, are pre¬ eminent for loftiness and vigour, and animated with a great and mighty spirit. In fact, they are, almost without excep¬ tion, dignified by a sobriety, yet greatness, of mind, to which we know not where to look for a parallel. Unity of sentiment and severity of style are the characteristics of them all. In the finishing of such short poems, which so¬ licit ornament from variety of thought, on the indispensa¬ ble condition of perfect subordination, greater accuracy and elegance might perhaps be expected. But they are all conceived and executed in a grand, broad style, with a freedom and boldness of hand which always bespeaks a master of the art. Like a small statue from the chisel of Lysippus, or a miniature from the pencil of Michel An¬ gelo, they demonstrate that the idea of greatness may be excited in our minds by the least of those works on which genius has stamped its magical impression.2 In 1646, the wife of Milton gave birth to her first child, a daughter, baptized by the name of Anne, who appears to have been lame from her early infancy; and, in the fol¬ lowing year, his father died, whilst the Powells left him to return to their former residence in the country. At this period, says Toland, “ he revived his academic insti¬ tution of some young gentlemen, with a design, perhaps, of putting in practice the model of education lately pub¬ lished by himself; yet this course was of no long continu¬ ance, for he was to have been, in 1647, made adjutant- general to Sir William Waller, but that the new-modelling of the army, and Sir William turning cat-in-pan, this de¬ sign was frustrated.” In 1648, Milton’s second daughter, Mary, was born ; and sqpn afterwards the course of public events introduced him to an honourable and important office in the state. The political occurrences of this period, in as far as these were connected with the personal history of Milton, have been briefly and lucidly described by Dr Symmons. The victory of Naseby, gained on the 14th of June 1645, by the army under Fairfax and Cromwell, may be considered as having terminated the contest between the king and the parliament. From this time the unhappy monarch was, in truth, in the hands of his enemies, and passed se¬ veral months in a species of captivity at Oxford. In April 1646, he fled to the army of the Scots before Newark, un¬ der the command of the Earl of Leven, by whom he was detained as a prisoner ; and not long afterwards he was de¬ livered to the commissioners of the parliament, and by them conducted to Floldenby House in Northamptonshire. Here he remained until June 1647, when he was seized by the army, and, after some removals, settled at Hampton Court. At this crisis, an opportunity was presented him of reco¬ vering his fallen fortunes and replacing himself upon the throne. Cromwell and Ireton, uncertain of the result of the contest with the Presbyterians, and apprehensive of a junction between the latter and the royalists, now offered to reinstate him in his kingly dignity, upon certain con- Miltou ed from^his^nptlpThrnnp6 tSlnff!r; t!!uS ulink t^ems®l.ves original. Sir Egerton Brydges alleges, that as soon as Milton descend- a cold and harsh stimintinn nf nil tl ^ m f C°are c,on ict practical affairs,” the happy delirium of glorious genius subsided into n T^i «?*T- (4* P- ») Now this writer had either read the Speech for the , y -nseJ renting, or he had not. It he had read it, what are we to think of his judgment as a critic ? If he had not *?• ,W8’ WhC",the freeta «f ‘he press was conlidefed in danger, momson, author £ erevS“hrcttita”l10t^ttr,,0‘l'i,S d,rursei »nd, at such a time, lie could not possibly have rendered a more acceptable service, as it contains all that can be urged in favour of that species of liberty, without which there is no security for anv other "'hi° asse.rtei' ,th? u,,ii4ed ^ caSSaiihis pC,s ; and so admirably did he perform his task. thal he leTLLsTnoThi^tot SrbTotherIh‘Ch ^ ml*h* ^ eontroverted, Edinburgh lieview, vol. xlii. p. 324. Symmons’s Life of Milton, p. 272. MILTON. 95 Hilton, ditions, which they stipulated in behalf of themselves and their friends. But the infatuated monarchs rejected the proffers of fortune, and, by his haughtiness, fluctuation, and duplicity, gave mortal offence to the only individuals who had the power to save him. Even at Carisbrooke Castle, where he was confined on his flight from Hampton Court, fortune seemed again disposed to redress her past wrongs, and to give him back by treaty a large portion of what had been ravished from him by force of arms. But his fatal obstinacy repulsed her advances, and this, added to his perfidy, sealed his doom. He refused with scorn the pro¬ posals of the army, thinking to prevail by means of the dif¬ ferent factions, and to regain by policy what he had lost in fight. All hopes of accommodation had thus vanished. The nation was torn in pieces by contending factions, each desirous to employ the king as an instrument for attaining its own objects. How to dispose of him now became the only question, and it was speedily decided. The army demanded his death, which its leaders deemed indispen¬ sable to their own safety; the Presbyterians in the par¬ liament, who would have joined the king against the army, were seized and committed to prison ; the unfortunate mo¬ narch, after the semblance of a legal trial, was condemned to suffer death ; and on the 30th of January 1648-49, he was executed, in pursuance of the sentence passed upon him, for having “ traitorously and maliciously imagined and contrived the enslaving or destroying of the English nation.” Hitherto Milton had remained an inactive spectator of events ;• he had taken no part in the controversy in which the king, the parliament, and the army were engaged; and he had been in no way accessory to the king’s death. Now, however, his services were required in behalf of those who had been principally concerned in that distressing transaction ; and, in February 1648-49, he published The Tenure of Kings and Magistrates, in which he attempted to prove “ that it is lawful, and hath been held so through all ages, for any who have the power, to call to account a tyrant or wicked king, and, after due conviction, to depose and put him to death, if the ordinary magistrate have ne¬ glected or denied to do it.” This work, he tells us, “ was written rather to tranquillize the minds of men, than to dis¬ cuss any part of the question respecting Charles,” the dis¬ cussion of which belonged to the magistrate and not to him, and which had already received its final determina¬ tion. He also disclaims having directed his argument or persuasion against Charles personally; contenting himself with proving, by the testimony of many of the most emi¬ nent divines, “ what course of conduct might lawfully be observed towards tyrants in general.” The subject, in fact, is discussed without any taint of virulence or acrimony, with much force of reasoning, and a considerable but not an ostentatious display of learning. That kings and magis¬ trates are amenable to the laws, and may be punished for the violation of them, is argued from the origin and con¬ stitution of society, from the authority of the Jewish scrip¬ tures, from that of the most eminent Christian divines, and from the practice of all civilized nations; and the author has unquestionably demonstrated, that the responsibility of kings to a human tribunal is a doctrine which has not been considered as incompatible with Christian theology. It this were not so, then the doctrine that tyrants may lawfully be resisted, could no longer be maintained ; for, to make resistance lawful in any circumstances, the tyrant who abuses his power and tramples down the rights and liberties of the people, must first of all be held to be re¬ sponsible, not to God only, but to the nation whose laws he has violated. But it may, nevertheless, be doubted whether the authorities produced by Milton support, to its full extent, the assertion in the title of this work, “ that it is lawful for any who have the power to call to account a tyrant;” even although the assertion be somewhat quali- Milton, fled by the subsequent words, “ and, after due conviction, to depose and put him to death.” It is much more easy to establish the responsibility of tyrants generally, than either to define its limits, or to fix the jurisdiction by which it may be rendered effectual. Milton’s next work was Observations upon the Articles of Peace between Ormond and the Irish Rebels, signed at Kil¬ kenny on the 17th of January 1648-49. One of the prin¬ cipal causes of the king’s misfortunes and ruin was his sup¬ posed connection with the Irish Catholics; and the treaty concluded with them by his representative, at the time here mentioned, served to confirm public prepossession on the subject. The rebellion in Ireland had been distin¬ guished by circumstances of peculiar atrocity, all evincing the power of long-continued oppression to debase and un¬ humanize the hearts of men. Mercy seemed to have fled from the earth ; cruelty exhausted its horrid and sicken¬ ing refinements; enormities, which admit not of descrip¬ tion, were perpetrated; all ordinary ties were disregarded; no voice was listened to; save that of revenge. Never, even in the annals of servile wars, had the wild passions of infuriated slaves rioted in more indiscriminate slaughter. Yet in the massacre itself the king had no participation; it was the terrible, but not necessary nor foreseen conse¬ quence of the revolt; and Charles can only be held as hav¬ ing been accessory to the rising, by considering his sanc¬ tion as implied in that of the queen, and from the circum¬ stance that the leaders of the insurrection everywhere pro¬ fessed to act under the royal authority. But, in the first place, so grave an imputation should not be made on grounds of constructive probability alone ; and, secondly, it seems to be now admitted on all hands that the king’s commis¬ sion, pretended by O’Neale, was a forgery of his owm. The opportunity, however, was too favourable to be neglected by Milton ; and he found little difficulty in exciting indig¬ nation against the articles of a peace which, abandoning the English and Protestant cause in Ireland, permitted its enemies to exult in the success of their sanguinary ven¬ geance. Milton now retired for a time from the field of political warfare, and, reverting to the more peaceful occupations of literature, composed four books of a History of England, which he intended to consecrate to the honour of his na¬ tive country. But the prosecution of this undertaking was suspended by an event which formed a remarkable epoch in the life of the poet; namely, his appointment as Latin secretary to the council of state. His profound knowledge of the Latin language, in which the council had determin¬ ed to carry on all their correspondence with foreign na¬ tions, and the elegance of his style, added to his extensive knowledge of history, and other qualifications, pointed him out to the sagacity of the council as a person eminently fitted for such an office; and, accordingly, without even a suspicion of the preferment intended for him, he was invit¬ ed to enter into the service of the state. The appointment was made on the 15th March 1649, and he immediately applied himself to the duties of his new avocation. It has been suggested, with some appearance of probability, that he must have been indebted for this preferment either to the younger Vane or to Bradshaw, who were members of the council, and who have been made the subjects, both in prose and in verse, of his eloquent and poetic panegyric. But if the preference was, in the first instance, the sugges¬ tion of friendship, it was afterwards proved by the event to have been the dictate of wisdom. I he hand of the La¬ tin secretary most ably concurred with the spirit of the executive council ; and during his continuance in office, which was prolonged till the Restoration, the state papers in his department may be regarded as models of diploma¬ tic composition. Amongst the correspondence of Milton, 96 Milton. M I L during the protectorate of Cromwell, were a series of letters addressed to the kings of France, Denmark, and Sweden, relative to the persecution of the Vaudois, which might be cited in proof of what has just been stated. The official instruments were no doubt faithful to the general purposes of the man who then governed England; but they also exhibit much of the liberal and benevolent spirit of the secretary ; and, by their dignified yet conciliating tone, strong reasoning, and persuasive eloquence, they deserve to be classed amongst the ablest compositions of the kind to be found in any language. Nor was it merely in conducting the correspondence of the state with foreign powers that Milton’s ministerial agency was employed. It appears to have been used by the council in all cases which related to foreigners, and to have been nearly of an equal extent with that of the modern secretary of state for the foreign de¬ partment. But his pen was not confined to the writing of government despatches or official correspondence. Soon after the king’s death, a book, purporting to have been written by the “ royal martyr” himself, appeared, under the title of EIKHN BA2IAIKH, or Portraiture of his Sacred Majesty in his Solitudes and Sufferings, and made a powerful impression upon the public mind, to the disad¬ vantage of the republican cause. The fate of the unhap¬ py Charles had very generally excited strong feelings of sympathy. He appeared to have been the victim of an am¬ bitious and sanguinary faction ; and, whilst his faults were generously buried in his grave, his virtues were aggran¬ dised by pity for his misfortunes, and honoured with exag¬ gerated commendation. Hence the appearance of a work, professedly by his own hand, in which he is represented in the constant exercise of prayer, asserting the integrity of his motives before the great Searcher of Hearts, and urg¬ ing a fervent appeal from the injustice and cruelty of man to the justice and clemency of God, was eminently calcu¬ lated to agitate the public mind in his favour, and to make every tongue vibrate in execration of his enemies. To counteract the effect of this popular production, which threatened to become alarmingly great, the council deter¬ mined to avail itself of the abilities of its new secretary, and delegated to Milton the task of contending with the Eikon Basilike. This he performed with singular ability, in his E/xovoxXoccrjis, or Image-breaker, the title prefixed to this re¬ futation of the reputed work of royal authorship, and which may be regarded as one of the most finished and powerful of his controversial productions. There does not appear to have been any order in council directing him to write this TON. answer 5 but his owm wrords are full and expiess as to the IVIilton direction he had received. “ A book appeared soon after,” ’’W ' says he, “ which was ascribed to the king, and contained the most invidious charges against the parliament. I was ordered to answer it, and opposed the Iconoclast to the Ikon.” It is certain that the royalists depended greatly on the effect which they expected to be produced by the Eikon Basilike; forty-seven editions of it were circulated in England, and forty-eight thousand five hundred copies are said to have been sold. Milton, therefore, felt that the peace and safety of the commonwealth were at stake, and having entered into his subject with his usual ardour, he completed his task with even more than his ordinary suc¬ cess. The genuineness of the Eikon long remained a matter of controversy ; but all doubt upon this subject has for some time been set at rest. It is now certain that the use of the king’s name was a fraud, and that the real author of the book was Gauden, bishop of Exeter. This has been established by evidence so convincing and conclusive, that the question may be considered as definitively settled.1 2 From several passages in the Iconoclast, it is evident that Milton strongly suspected the Eikon to have been the production of some “ idle and pedantic” churchman ; but it seems to have been his policy to permit the imposture to pass, and to deal with the work as if it had been the genuine effusion of the royal personage whose name it bears. Pres¬ sing closely on his antagonist, and tracing him step by step, he either exposes the fallacy of his reasonings, or the false¬ hood of his assertions, or the hollowness of his professions, or the convenient speciousness of his devotions. He dis¬ covers a quickness which never misses an advantage, and a keenness of remark which carries an irresistible edge. In argument and in style the Iconoclast is equally masterly, being at once compressed and energetic, perspicuous and elegant. It is a .work, indeed, which cannot be read by any man, whose reason is not wholly under the dominion of prejudice, without producinga conviction unfavourable to the royal party ; and it justly merited the honourable dis¬ tinction conferred upon it by royalist vengeance, of burn¬ ing in the same flames with the Defence of the People of England? The Iconoclastes was first printed in 1649 ; a second edition of it appeared in the following year; and, in 1652, it was again published in London by Du Gard, in a French translation. It received two answers ; one with the title of E/xwv ccKkaGrog, or the Image Unbroken, in 1651; and the other, called Vindicice Carolines, in 1692. 1 See on this subject, Who Wrote Ikon Basilike? by Dr Christopher Wordsworth, London, 1824 ; and more especially a most mas¬ terly discussion of the same question in the Edinburgh Review (vol. xliv. p. 1, et seq ) by Sir James Mackintosh, one of the ablest and most conclusive pieces of historical reasoning and investigation to be found in modern literature. 2 Dr Johnson, who misses no opportunity of libelling the character of Milton, accuses him of having interpolated “ the book called Ikon Basilike, by inserting a prayer taken from Sidney’s Arcadia, and imputing it to the king.” One would have thought that the very severity with which Milton, in one passage of his work, has animadverted on the king for having adopted this prayer, and given it, with a few immaterial alterations, as his own to the bishop who attended him on the scaffold, might have saved his memory from the imputation of an act at once so scandalous and so paltry. But, fortunately, we possess the most satisfactory evidence of his entire exemption from the dishonest meanness imputed to him. It was by Itoyston, who is said to have received the manuscript from the king, and not by Du Gard, the printer of the parliament, that the edition of the Eikon was printed in which the controverted prayer originally appeared ; and, surely, Royston’s royalist press was remote from the suspicion of any contact with Milton or his supposed accomplice Bradshaw. A et with this fact staring him in the face, Dr Johnson admitted the calumny, which the infamous Lauder had revived, and attempted to affix on the name of Milton the stigma of forgery. The first edition of the Eikon BasiUke, to which this prayer, called “ a pi'ayer in time of captivity,” is attached, was printed for R. Royston, at the Angel in Ivy-lane ; a fact which utterly annihilates the charge, whilst it proves the “malice” in which it” originated. “Faction,” says Johnson, “seldom leaves a man innocent, however it might find him.” The maxim is not only true, but its truth has been exemplified by its author, whose guilt, in this particular, Dr Symmons has unanswerably exposed. (See Life of Milton, pp. 328, 329, et seq.) rhis_ is. no new charge. It was originally broached by Lauder in his publication entitled King Charles Vindicated from the charge of Plagiarism brought against him by Milton, and Milton himself convicted of Forgery and a Gross Imposition on the Public, which appeared in 1754, some time after his.forgeries in regard to the Paradise Lost had been detected and exposed by Dr Douglas, and after he had publicly confessed his guilt in a penitential letter addressed to that eminent person. The dog returned to his vomit again, and in¬ vented this new falsehood in the hope of attracting some attention by a fabrication which it might be difficult to refute. But he was deceived in his expectation. I he “ unspecious falsehood” failed to obtain that degree of regard which was requisite to render it of any use to the author ; yet, “ with a. notable and hardy contempt of truth,” it was afterwards revived by Johnson, “ the great literary patron of Lauder, and his accomplice in the infamous but abortive attempt to blast the reputation of Milton. (Symmons’ Life of Milton, App. pp. 627, 628.) ^ \ j j j M I L Hilton. We may mention here, that on his appointment to the office of Latin secretary, Milton removed, in the first in¬ stance, to a lodging in the house of one Thompson, atChar- ing-cross, and afterwards to apartments in Scotland Yard, where his wife gave birth to her third child, a son, who died in infancy, on the 16th of March 1650. And in 1652 he shifted his residence to Petty France, where, till the period of the Restoration, he occupied a handsome house, opening into St James’s Park, and adjoining to the mansion of Lord Scudamore. But, wherever his dwelling-place might be, he was des¬ tined to enjoy no respite from labour. No sooner had he finished his masterly reply to the posthumous work (as it was then generally considered) of King Charles, than he was again called upon to enter the lists as the assertor of the commonwealth of England; but he was now to be op¬ posed to a more formidable antagonist, and to contend on a far more ample field. His refutation of the Eikon had been confined almost within the limits of his own country. But in the contest in which he was about to engage, the powers of his mind were to be exhibited to Europe at large, and the whole family of civilized nations were to witness his victory or defeat. Charles II. was at this time protected by the states of Holland, and being anxious to appeal to the world against the execution of his father, as well as to blend his own with the general cause of kings, he employed Claudius Salmasius, or Claude de Saumaise, then an hono¬ rary professor in the university of Leyden, to write a de¬ fence of the late king and of monarchy. This man, who was famed for his learning, and held a high rank amongst the most eminent scholars of that age, had already distin¬ guished himself by the publication of a book in defence of civil and religious liberty ; and, as the reward of his exer¬ tions, he had received the grant of a pension from the repub¬ lic of Holland. It would have been well for Salmasius had he been content to enjoy the advantages of his lot in the bosom of tranquillity, and had he refused to tarnish his re¬ putation, belie his principles, and compromise his peace, at the solicitation of an intriguing and profligate prince. But when a king sued to be his client, and the cause of so¬ vereigns claimed the support of his pen, his vanity over¬ mastered every other consideration ; in an inauspicious hour he undertook the defence of prelacy, monarchy, and Charles I.; and, in virtue of this engagement, he produced his/^e- fensio Regia pro Carolo Primo ad Carolum Secundum, which made its appearance before the close of the year 1649. This book, taken as a whole, greatly disappointed the ex¬ pectations of the learned. With the tenacious memory, the quick combination, and the acute microscopic vision, of the scholar and the critic, its author was destitute of that grasp and comprehension of mind which are requisite for the dis¬ cussion of complex political systems. Throughout the whole of the Royal Defence there is a pervading littleness, of which the reader is soon rendered painfully sensible. Its author, like Martha, is troubled about many things, and seems overwhelmed with trifles. Etymology is frequently substituted for argument; quotations are accumulated with¬ out judgment or felicity ; and his materials are put together without method, unassorted and unarranged. Still, the Royal Defence is by no means a contemptible production. It amasses nearly all that can be collected on the subject; in its management it is sometimes skilful, as in its execu¬ tion it is occasionally happy ; and it presents us with argu- T O N. 97 ments which are often subtle and generally specious. “ But Milton, the circumstance which will principally recommend this work of Salmasius’s to a numerous party in the present day,” observes Dr Symmons, “ is the vivid recollection which it forcibly awakes, of some of the political writings Mr Burke. The same dark arsenal of language seems to have supplied the artillery which, in the seventeenth cen¬ tury, was aimed at the government of England, and in the close of the eighteenth at that of France; and many of those doctrines which disgust us with their naked deformi¬ ty in the Leyden professor, have been withdrawn from our detestation under an embroidered and sparkling veil by the hand of the British politician. When Salmasius calls upon the monarchs, and indeed upon all the well-instituted republics, or, in other w'ords, the regular governments of Europe, to extirpate the fanatic and parricide English, the pests and the monsters of Britain, we must necessarily be reminded of Mr Burke’s crusading zeal against the revolu¬ tionists of France, and be persuaded that he blows the trumpet bequeathed to him by the antagonist of Milton, and sullied with the venal breath which was once purchas¬ ed by Charles. Unquestionable resemblance is to be dis¬ covered in the Royal Defence to those pieces of Mr Burke’s which respect the French revolution; and if the former were to be translated, the English reader wmuld be less struck with the novelty of the latter, and more disposed to assent to what was asserted by the wise man more than three thousand years ago, that ‘ there is now no new thing under the sun.’ ”1 On the causes of this resemblance we shall not venture to offer any opinion. Similar thoughts might be suggested by similar subjects; the same passions, how¬ ever excited, might naturally rush into the same channel of intemperate expression ; or the discursive mind of Burke might range even the moors of Salmasius to batten on their coarse produce, and, finding them replenished with bitter springs, might be induced to draw from them supplies to feed the luxuriancy of his owm invective. But whatever might be the intrinsic merit of the Royal Defence, it derived importance from the name of Salma¬ sius ; and the appeal being made to all Europe, especially to crowned heads, it was not likely to be without its ef¬ fect. The council of state immediately perceived the ne¬ cessity of replying to it, and it was accordingly resolved “ that Mr Milton do prepare something in answer to the book of Salmasius, and when he hath done it, bring it to the council.” This entry is dated the 8th January 1649- 50 ; and there is another, dated the 23d of December 1650, in which it is ordered “ that Mr Milton do print the trea¬ tise which he hath written, in answer to a late book writ¬ ten by Salmasius, against the proceedings of the common¬ wealth.” By this time his sight had become greatly im¬ paired, and he was forewarned by his physicians that the total loss of it would be the infallible result of his labour; but, undeterred by this prediction,2 and unrestrained by bad health, which allowed him to compose only at intervals, with hourly interruptions, he persevered in the work which he had undertaken, and produced, early in 1651, that noble acquittal of his engagement to the council, the Defemio pro Populo Anglicano contra Claudii Salmasii Defensio- nem Regiam. This work more than answered the expec¬ tations which were entertained of it. Indeed the triumph of Milton was decisive, and the humiliation of his adversary complete. It would be difficult even for its greatest ad- 1 Symmons’Life of Milton, pp. 357, 358,359. , , . „ .. s “ I would not,” says he, “have listened to the voice even of Esculapius himself, from the shrine of Epidaurus, in preference to the suggestions of the heavenly monitor within my breast; my resolution was unshaken, though the a en of my sight or the desertion of my duty.” “ I considered,” he adds, “ that many had purchased a less good by a greater evil, the meed of glory by the loss of life ; but that I might procure a great good by a little suffering; tha loug am in , s discharge the most honourable duties, the performance of which, as it is something more duiable t lan g o „, 0 J superior admiration and esteem.” (Second Defence, Prose Works, p. 927.) VOL. XV. 98 MILTON. Milton, mirer to speak of this masterly composition in terms of too enemies whom his want of moderation had excited, exult- Milton. —v—^high commendation. “ If happily,” says Dr Symmons, ed openly in his fall. It has been asserted that the ya- " V'*' “ ft had been less embittered with personal invective, and rious mortifications which he experienced on this occasion had withdrawn the two immediate combatants to a greater proved eventually fatal to his life ; and it is not improbable distance from our sight; if it had excluded every light that wounded pride and vanity might prove injurious to and sportive sally from its pages, it would have approach- health, and accelerate the crisis of dissolution. He retired ed very nearly to perfection, and would have formed one from the court of Stockholm in September 1651, and the of the most able and satisfactory, the most eloquent and following year died at Spa in Germany, just after he had splendid, defences of truth and liberality against sophistry completed a most virulent reply to his opponent, on whose and despotism, which has ever been exhibited to the world.” devoted head he accumulated every crime which his ma¬ lts diction is pure, spirited, and harmonious j1 the language lignity could invent, and heaped every opprobrious epithet of Cicero is upon the author’s tongue, “ winged with red which a copious vocabulary of abuse could supply. It is lightning and impetuous rage ;” and through this appro- stated by Toland, and repeated by others on his authority, priate medium are conveyed strong argument, manly sen- that Milton received L.1000 from the Treasury as a reward timent, comprehensive erudition, and profound wisdom, re- for this great work. That he deserved recompense no lieved at intervals by sallies of excursive fancy. By the one can doubt; but there is reason to believe that Toland law^s of God, either written in the heart of man or made had been misinformed ; for, in the Second Defence, pub- the subject of immediate revelation, and by the testimony lished three years afterwards, he declares that he had of all history, sacred and profane, the Defence of the “ not been made one penny richer” by the publications he People of England shows that political power properly had undertaken for the service of the country.3 He re¬ emanates from the people, that for their benefit it must be ceived the thanks of the council “ for his good services,” exercised, that for their good it may rightfully be resum- which they seem to have duly appreciated; but the terms ed. With reference to the point more immediately at is- in which these are conveyed seem to indicate that this was sue, the author asserts the ancient genealogy of English the only acknowledgment.4 His best reward, however, freedom, and traces it from its British origin, through its was the triumphant success with which he vindicated the Saxon and Norman lineage, down to the establishment of people of England, and annihilated the presumptuous fo- the commonwealth. During the whole of this period he reigner who had been hired to calumniate them, proves that the existence of the ultimate sovereignty of the In 1652, Milton, having removed from his lodgings in people w'as established by solemn acts, or by acknowledg- Whitehall to a house opening into St James’s Park, lost ment in compacts ; and, from the Saxon times, he demon- his wife in child-bed, and was left with three motherless strates the existence of a supreme legislative assembly, by daughters, in domestic solitude, and in a state of almost which the conduct of the executive was controlled, and to total blindness. The prediction of his physicians had been which the chief magistrate was responsible. He is unques- but too fatally verified. His sight, naturally weak, had for tionably too severe in his treatment of Charles, and we are several years been declining ; and the composition of his fatigued with the perpetual recurrence of invective against last great work had completed its extinction. In the course his antagonist; but the one was provoked by exaggerated of this honourable labour he lost entirely the vision of one praise, and the other may find some excuse in the abusive eye ; that of the other soon afterwards closed; and “ for and insolent language with which the government and the book of knowledge fair” he was “ presented with an people of England had been assailed. He condescended to universal blank of Nature’s works.” But such was the vi- fight the adversary with his own weapons, and answered gour of his intellect, that, in addition to the discharge of a fool according to his folly. his duties as secretary to the council, he continued his The Defence of the People of England was received labours in defence of the commonwealth. His mind was and read with universal applause and admiration; and, too eager to be diverted from his purpose, and too strong whilst the production of his opponent crept languidly to be subdued even by this accumulation of calamities, through a confined circulation, it passed rapidly through The precise date of his blindness, however, has not been several impressions, - was translated into foreign languages, ascertained ; and equally unfixed is that of his second mar- and occupied a large space in the public mind. Even riage, which appears to have taken place about two years Christina, queen of Sweden, is said to have commended it after his entire loss of sight. The lady wdiom he chose on openly, although, from her rank and character, she could this occasion wTas Catherine, daughter of Captain Wood- scarcely be supposed to have any great favour for its doc- cock of Hackney, who seems to have been the object of tunes. ^ The result of the contest was peculiarly affecting his fondest affection. Like her predecessor, she died in to the feelings and unfavourable to the interests of Salma- child-bed within a year after her marriage, and the daugh- sius. The Swedish queen frowned upon him as a pernicious ter she bore to him soon followed her to the grave, parasite; the states of Holland suppressed his work, as Numerous replies to Milton’s Defence of the People of one calculated to promote tyranny; and the numerous England were sent forth by the royalists, but these he left rntm«nnbtnnVPt^kf ” mm ^ombatants’ declares himself unable to decide whose language was best, or whose arguments were worst. Johnson thinks that Milton s pe™ds are smoother, neater, and more pointed.” As to the arguments of Salmasius, it is a strong in thehPfavour?ainSt them’ HobbeS’ Wlth a11 hls acuteness’ added to his known partiality for despotism, could find nothing to say - 1 he author of the Clamor Rcgn Sanguinis ad Caelum, which called forth the Second Defence, says, “ Of what the execrable Mil- ton has spiteful y elaborated to rum the reputation of the deceased king, and to destroy the hereditary succession to the crown there are so many editions, that I am uncertain to which of these I should refer my readers.” ' 7 succession ro me crown, mere turn 0P-niffates atque opes, quas mihi exprobras, non attigisse, neque eo nomine, quo maxime accusas, obolofac- ‘DrSymmons conjectures that the munificence of the council might have been posterior to the date of the Second Defence or that the passage may be regarded as not sufficiently explicit to be admitted against the positive assertion of Toland coinciding with the general character of the republican government, but, in the first place, its three years confessedly elapsed w^ouTthe council ass^rtTon^iOIilton ^Jas'no^tive^arth^ rfCqinifieniSej’ 11 is.s^eIy probable that they Would do*so at aposterior date; secondly, the wn . , ,1 r U \ u 1 that of lola"d’t0 whlch ff is in direct opposition ; and, thirdly, as secretary of the council he was a public servant, all of whose energies were fairly exigible for the service of the state. ' 7 ’ MILTON. Jlilton. to perish in their natural obscurity.1 In 1652, however, —-v—''there appeared at the Hague a work entitled Regii San¬ guinis Clamor ad Ccelum adversus Parricidas Anglicanas, which, from the calumnies it heaped both upon the parlia¬ ment and upon Milton himself, the latter considered as calling for a reply. The real libeller was a Frenchman of the name of Du Moulin, afterwards prebendary of Canter¬ bury ; but, fearful of avowing a production calculated to expose him to literary vengeance, he sent it in manuscript to Salmasius, by whom it was consigned, for the purpose of publication, to one Alexander Morns or More, a man of Scotch parentage, but settled in France, and at this time principal of the protestant college of Castres in Langue¬ doc, where he had acquired some celebrity as a preacher. ♦ Morus readily undertook the honourable task proposed to him, wrote a dedication to Charles II. under the name of the printer,2 and became so mixed up with the work, that, until Du Moulin was compelled to acknowledge his pro¬ duction, he was generally considered as its author. But he had reason to repent bitterly the part he acted in this disgraceful action. For a brief and equivocal reputation (of which he made the most whilst it lasted), his life was em¬ bittered, and his memory covered with infamy. A terrible castigation awaited him. In 1654, Milton produced his reply, under the title of Defensio Secunda pro Populo An- glicano, contra infamem Libellum anonymum cui titidus “ Regii Sanguinis Clamor ad Codum.” In answer to the slanders with which his adversary had at¬ tempted to overwhelm him, he found it necessary to give a sketch of many parts of his own history, and to disclose the motives and springs of action by which his conduct had been regulated ; a delicate task, in the execution of which he speaks with the confidence of innocence and the unfalter¬ ing dignity of truth. On this account the wrork is pecu¬ liarly interesting, and has supplied his biographers with materials, which are of the more value as they cannot be ob¬ tained any where else, and their authenticity is beyond all doubt. The defensive portion of the work, therefore, is that which at present constitutes its principal interest. But at the time of its publication, the attraction consisted in its active and unsparing hostility. The character of Morus was, unhappily for himself, not proof against attack. Of a quarrelsome and overbearing temper, he was at va¬ riance with every body; whilst his uncontrolled attach¬ ment to women involved him in adventures not calculated to reflect much credit upon a minister of the gospel. Pos¬ sessing correct information as to his conduct, and resolv¬ ed to use it without scruple, Milton pursues him through the opprobrious privacies of his immorality,3 4 and exacts a se¬ vere vengeance for those savage insults, in the guilt of which he had become implicated as a party and an accom¬ plice. Morus struggled to support himself by a reply, which Milton demolished in another answer ; as he did also a se¬ cond attempt of the same kind in a short confutation, which terminated the controversy. In the course of it the sufferings of Morus had induced him to give up the au¬ thor of the publication which had brought upon him such a fearful visitation; and Du Moulin, who was then in England, felt himself to be in danger; but, for some reason or other, Milton suffered the Frenchman to escape chastise- 99 ment. It is probable enough, as Dr Symmons suggests, Milton, that, regarding Morus and his associate “ as joint parties inv'—-v— a bond, he conceived himself to be justified in calling up¬ on the most responsible of the two for the payment of his debt.” But, independently of its communications respecting its illustrious author, the Second Defence contains many striking passages, and exhibits a variety of entertaining matter. It introduces to our notice many of the writer’s republican friends, as Fleetwood, Lambert, Howley, Mer¬ ton, Whitelocke, Pickering, Strickland, Sydenham, Syd¬ ney, Montacute, Laurence, Fairfax, and Bradshaw; and, besides an animated address to Cromwell, in which the cha¬ racter of that remarkable man is ably pourtrayed, it pre¬ sents us with an eloquent eulogy on Christina, queen of Sweden, in requital, as it would seem, of the praise which the daughter of the great Adolphus had so liberally be¬ stowed on his Defence of the People of England. Of the address to Cromwell, Johnson observes, in his characteris¬ tic manner, that “ Caesar, when he assumed the perpe¬ tual dictatorship, had not more servile or more elegant flattery.” The beauty of the 'composition, indeed, has never been, and cannot be, disputed ; and as to the alleged “ servility,” they alone can properly judge who are capa¬ ble of appreciating the wisdom of the advice which is ten¬ dered to the protector, in connection with the state of af¬ fairs at the time when Milton wrote. The Long Parlia¬ ment had been dismissed ; its successor, nicknamed Bare- bones’ Parliament, had also been dissolved ; and the cap¬ tain-general, with his military council, found himself in possession of a kind of derelict sovereignty. On the 16th of December 1653, Cromwell was installed into the office of Lord Protector of the Commonwealth of England, and under that title now possessed the supreme power. Some provision appears to have been made for convening a tri¬ ennial parliament; but the country was torn in pieces by contending factions, and the only hope of the restoration of internal tranquillity depended on the honesty and firm¬ ness of the protector, whose wisdom and courage had al¬ ready, on more than one occasion, proved the salvation of the commonwealth. Milton, whose address appears to have been composed immediately after Cromwell’s elevation, could not be unconscious of the egregious mockeries which had been practised upon the people, or insensible to the danger with which liberty was threatened by the concen¬ tration of all the powers of the state in the person of the protector ; but still it was natural for him not to abandon, without extreme reluctance, the hopes which he had che¬ rished respecting the protector’s rectitude of intention ; and hence he seems desirous of urging him to a just and generous exercise of power by every motive which wise counsel or eloquent panegyric could suggest. Milton was not a venal parasite or a courtly flatterer. He certainly ap¬ proaches the master of England with elevated sentiments, and in elegant language extols the enlightened wisdom, martial prowess, and stern integrity, by which the conduct of that fortunate soldier had hitherto been characterized; but extravagant as some of his praises may now be thought, it cannot be denied that, even in these, he discovers the quality of an erect and independent spirit.4 1 The earliest of these replies, all of which were anonymous, was erroneously imputed to Bishop Bramhall. It appealed in 1051, with the strange title Apologia pro liege ct Populo Anglicano contra Joannis Pulyprugmitici, alias Aliltoni Angli, Dejensionem destiucti- vam, &c. 9 Adrian Ulac, in Latin Vlaccus. . . 3 The following epigram, commonly attributed to Milton, relates to one of the licentious amours in which Morus had been en¬ gaged :— Galli ex concubitu gravidam te, Pontia, Mori Quis bene moratam morigeramque neget ? On this point of attack, Morus, in his reply, gave his antagonist an advantage, by inadvertently correcting the orthography of the gii 1 s name, which, he affirmed, ought to be written Bontia, and not Pontia. , . , , . ^ . 4 The conduct of Milton during the administration of the protector is a subject on which his enemies delight to dwell. Inat 100 MILTON. Milton. With the Second Defence of the People of England, •v-~—^ and the two subsequent replies to Morus, Milton closed his controversial labours. He still continued to serve his country in the character of Latin secretary; but his dis¬ approbation of the actual state of affairs is evident from more than one of his letters ; and he seems to have ac¬ quiesced in the existing evil only because it was irreme¬ diable, and inferior in degree to the calamity of a resto¬ ration. Mortified and disappointed, he now sought relief from the feelings which oppressed him by engaging in the prosecution of three great works; his History of England, of which he only completed two additional books; his Thesaurus Linguce Latince; and his immortal epic poem of Paradise Lost. Of the History it is only necessary to remark, in addition to what has already been stated, that, prior to its publication in 1670, it was mutilated by the caprice of the licenser, who struck out one of its most spi¬ rited and brilliant passages; that the portion expurgated was printed separately in 1681 ; and that it was afterwards restored to its proper place in the edition of the author's prose works published in 1738. The Thesaurus, for which he had made large collections, was never published; but the materials which he had amassed, occupying in manuscript three large folio volumes, were presented by his nephew Philips to the editors of the Cambridge Dictionary, by whom they appear to have been used in the preparation of that work for the press. “ To collect a dictionary,’’ says Johnson, “ seems a work of all others the least prac¬ ticable in a state of blindness, because it depends upon perpetual and minute inspection and collation. Nor would Milton probably have begun it after he had lost his eyes; but having had it always before him, he continued it ‘ al¬ most to his dying day.’ ” This work indeed appears to have formed a part of that change of literary labour in which he delighted; and it is curious in another point of view, as showing that his mind, with all its energies, could instan¬ taneously pass from invention to compilation, from the glo¬ rious visions of fancy to the dry and sterile drudgery of mere verbal collation. As to the third object upon which his powers were at this time exerted, his immortal epic, we shall forbear adverting to it until the time of its comple¬ tion and publication. In this variety of vigorous and effective intellectual ex¬ ertion did Milton employ his leisure hours during the re¬ mainder of the protectorate. He was evidently dissatis¬ fied with the state of public affairs ; but fearing lest he might aggravate existing evils by any symptom of aliena¬ tion, and unwilling to break with the protector, in whom his confidence was not yet entirely destroyed, he repress¬ ed his feelings, and waited in expectation of better times. In 1655 he composed the manifesto issued by the protec¬ tor to justify his war with Spain; and in 1657 Andrew Milton.j Marvell was associated with him in the office of Latin se-‘v'» cretary. In 1658 he published, under the title of The Ca¬ binet Council, a manuscript of Sir Walter Raleigh’s, con¬ sisting of aphorisms on the art of government. But from this and other occupations his mind was soon called to cir¬ cumstances of an afflicting and embarrassing kind. In the September of this year, Cromwell, broken down by the cares and anxietiesof government, finished his splen¬ did but unenviable career. He died surrounded by diffi¬ culties which even his powerful mind knew not how to sur¬ mount ; suffering acutely under domestic calamity; and leaving the nation a prey to the violence of factions which his vigorous authority alone had for a time restrained. His successor in the protectorate, Richard Cromwell, was not a pilot able to weather the storm now gathering; and at the end of nine months he resigned his perilous office, descend¬ ing without regret to the safe level of a private station. The council of officers then summoned the relics of the Long Parliament to re-assume the guidance of the common¬ wealth ; but the contests between them and the army ruin¬ ed the last hopes of the friends of liberty, and introduced a species of anarchy which threatened the setting up of a military despotism. The Presbyterians, taking advantage of these events, now openly avowed their disaffection to the ruling powers, and united themselves heartily with the royalists. This extraordinary conflict of parties, and the confusion which ensued, opened a field to Monk, then go¬ vernor of Scotland, for the display of his inconstancy, cun¬ ning, and perfidy. Favoured by his situation, and solicited at once by the Presbyterians, the people, and the parlia¬ ment, he was enabled to betray all who confided in him, to abandon his old associates to the butchery of legal ven¬ geance, and to surrender the nation, without a single sti¬ pulation in its favour. Never was a counter-revolution effected by such accumulated dissimulation, treachery, and perfidy; never did the liberties of a nation sink under the temporary ascendency of a meaner, a baser, or a more un¬ principled traitor, than the man by whom the Restoration was achieved. Whilst these events were passing, in the space between the protector’s death and the return of Charles, the mind of Milton must have been agitated with severe disquietude. Lie had seen the structure of liberty which his ardent ima¬ gination had erected, dissolve like a vision into air, leaving not a trace or vestige behind. All that was good, or prog¬ nostic of good, had passed away; and he now saw nothing but the selfishness of faction triumphing over the rights and the patience of the nation, and precipitating the cause which it professed to support into irretrievable ruin. At. this crisis, when England had need of him, Milton was not an enthusiastic votary of liberty,” says Mr Macaulay, “ should accept office under a military usurper, seems, no doubt, at first sight, extraordinary. The ambition of Oliver was of no vulgar kind. He never seems to have coveted despotic power. He at first fought sincerely and manfully for the parliament, and never deserted it till it had deserted its duty. If he dissolved it by force, it was not till he found that the few members who remained after so many deaths, secessions, and expulsions, were desirous to appropriate to themselves a power which they held only in trust, and to inflict on England the curse of a Venetian oligarchy. But when thus placed by violence at the head of affairs, he did not assume unlimited power. He gave the country a constitution far more perfect than any which had at that time been known to the world. He reformed the representative system in a manner which has extorted praise even from Lord Clarendon. For himself he demanded indeed the first place in the commonwealth ; but with powers scarcely so great as those of a Hutch stadtholder or an American president. He gave parliament a voice in the appointment of ministers, and left to it the whole legislative authority, not even reserving to himself a veto on its enactments. And he did not require that the chief magistracy should be hereditary in his family.” {Edinburgh Review, vol. xlii. p. 355.) If Cromwell’s moderation had been met in a corresponding spirit, there is no reason to think that he would have overstepped the line which he had traced for himself. But when he found that his parliaments questioned the authority under which they were called together, and that he was in danger of being deprived of the limited power he had reserved to himself, then it must be acknowledged that he adopted a more arbitrary policy. . In judging of the conduct of Milton, due regaid must be had to the character and circumstances of the times. A good constitu¬ tion is infinitely better than the best despot. But, at the period in question, the violence of religious and political animosities ren- dered a stable and happy settlement next to impossible. The choice lay not between Cromwell and- liberty, but between Cromwell and the Stuarts. Cromwell was evidently laying, though in an irregular manner, the foundations of an admirable system of liberty. 1 he Stuarts, if restored, would have re-constituted the despotism which had been overthrown. That Milton, therefore, made a wise election no one can doubt who compares the history of the protectorate with that of the thirty vears which succeeded it, the darkest and most disgraceful period in the annals of England. {Edinburgh Review, ubi supra.) M I L filton. wanting to his country. Apprehensive of returning into- ,-v“*'/lerance, he published two treatises, devoted to the consi¬ deration of two opposite evils. One of these was entitled A Treatise on the Civil Power in Ecclesiastical Causes; and the other, Considerations touching the likeliest Means to remove Hirelings out of the Church. Both these works are written with beautiful simplicity and earnestness, and should be studied by all who wish to understand the prin¬ ciples of religious liberty. In the first of them, he asserts the entire liberty of conscience, and, by arguments drawn from the sacred writings, demonstrates that, in matters purely religious, the interference of the magistrate is un¬ lawful. In the second, he allows the propriety of a main¬ tenance for Christian ministers; but, denying the divine right, as well as the political expediency, of tithes, he con¬ tends that pastors ought to be supported by the contribu¬ tions of their owm immediate flocks. In short, the immor¬ tal author of the Paradise Lost here advocates what, in the language of the present day, is called the voluntary principle.1 The current of national opinion was now running strong¬ ly in favour of monarchy. Harassed by the conflict of parties, and the disorders thereby occasioned, the people were in a state of mind favourable to the projects of Monk, and, regarding the restoration of the kingly power as a less evil than the frightful state of anarchy which now pre¬ vailed, were prepared to join him in setting up the old form of government. The earnest protestations of Monk, and the existence of a parliament in whi'?h the royalists formed an inconsiderable party, still supported the hopes of the republicans; but Milton, fully aware of what was passing around him, and indignant at the outrages committed by the army, discovered his serious apprehension of the gene¬ ral result, in a letter to a friend, dated the 20th of October 1659, in which he plainly hinted his suspicions of Monk, whom circumstances had rendered the arbiter of his coun¬ try’s fate. “ Unless these things, as I have above proposed,” says he, “ be once settled, in my fear, which God avert, we instantly ruin ; or at least become the servants of one or another single person, the secret author and fomenter of these disturbances? Almost immediately afterwards he addressed a letter to Monk, which was first published by Toland, entitled The Present Means and Brief Delinea¬ tion of a Free Commonwealth ; urging him to adopt such measures as seemed best calculated to prevent the resto¬ ration of “ kingship,” and put an end to civil commotion. And, after an interval of a few months, this was followed by another tract, entitled A Ready and Easy Way to establish a Free Commomoealth, in which he employs all his eloquence in demonstrating the preference of a repub¬ lican to a monarchical government, and in exposing the evils which would infallibly result from a restoration. He was accustomed to say, that “ the mere trappings of a monarchy could support a commonwealthyet, in this work, as well as in his Brief Delineation, he betrays an ap- TON. 101 prehension of an unqualified appeal to the people. The Milton, realization of a pure republic he felt to be impossible ; and he therefore proposed such a modification of that form of government as wrould, in his estimation, be a sort of mean between the two extremes of monarchy on the one hand, and a pure democracy on the other.2 His last effort in be¬ half of the republican cause was a short but very forcible commentary, entitled Brief Notes, on a loyal sermon preached by Dr Matthew Griffith, one of the late king’s chaplains; and with this, to which L’Estrange wrote a sharp reply entitled Ao Blind Guides, terminated the po¬ litical controversies of the author of Paradise Lost. All his hopes were now blasted. Monk having consum¬ mated his perfidy, Charles was advancing to take posses¬ sion of the throne ; and the Latin secretary had acted too distinguished a part in opposition to him and his family, not to be endangered by the event. He was therefore hurried from his house in Petty France, and concealed in that of a friend in Bartholomew Close, where he remained till the passing of the act of oblivion, in the exceptions of wdiich his name was happily not included. To whom, on this emergency, he was indebted for his preservation, has fre¬ quently been inquired, and variously explained, but never fully ascertained. The most probable conjecture is, that he was saved by the intercession of his friends Andrew Marvell, Sir Thomas Clarges, and Secretary Morrice, pow¬ erfully supported by Sir William Davenant, whom, in 1651, Milton had rescued from similar peril.3 Whilst he remain¬ ed in concealment, the House of Commons, by a formal vote, condemned his two great political works, the Icono- clastes, and the Defence of the People of England, to be burned by the hands of the common hangman; the only honour which that servile and degraded body could con¬ fer upon them. On the passing of the act of oblivion, 29th August 1660, Milton came forth from his hiding-place, where he had remained nearly four months; but, though his life had been spared, he was still persecuted by his ene¬ mies. Towards the close of the same year he was in cus¬ tody of the serjeant-at-arms, having probably been seized in consequence of a warrant for his apprehension issued by the House of Commons on the 16th of June ; but, on the 15th of December, the house ordered him to be forthwith released on paying his fees. Milton, however, appears to have objected to the condition of his discharge; for there is an entry in the journals, dated the 17th, to the effect, that “ a complaint being made that the serjeant-at-arms had demanded excessive fees for the imprisonment of Mr Milton, it be referred to the committee of privileges to ex¬ amine this business, and to determine what is fit to be given to the serjeant for his fees in this case.” On his return to society, Milton took a house in Hol- born, near Red Lion Square; but this he occupied only for a short term, as, in 1662, we find him residing in Jewin Street, from which he afterwards removed to a small house in the Artillery-walk, adjoining Bunhill Fields, where he 1 ‘‘ To the politician,” says Dr Symmons, “ who contemplates in this country the advantages of a church establishment, and sees it in union with the most perfect toleration, or to the philosopher who discovers in the weakness of human nature the neces¬ sity of present motives to awaken exertion and to stimulate attention, the plan recommended by our author would appear to be visionary or pernicious; and we should not hesitate to condemn it, if its practicability and inoffensive consequence were not incon- trovertibly established by the testimony of America. From Hudson’s Bay, with the small interruption of Canada, to the Mississippi, this immense continent beholds the religion of Jesus, unconnected with the patronage of government, subsisting in independent yet friendly communities, breathing that universal charity which constitutes its vital spirit, and offering, with its distinct yet blending tones, one grand combination of harmony to the ear of its heavenly Father.” {Life of Milton, p. 475.) 2 This production was made the subject of a sportive and a serious reply. The former, a ludicrous pamphlet, affecting to issue from Harrington’s republican club, was called The Censure of the Rota upon Mr Milton’s Book ; and the latter was styled The , Dignity of Kingship asserted, in answer to Mr Milton’s Ready and Easy Way. 3 “ The principal instrument,” says Bishop Newton, “ in obtaining Milton’s pardon, was Sir William Davenant, out of gratitude for Milton having procured his release when he was taken prisoner. It was life for life. Davenant had been saved by Milton’s in¬ terest, and in return Milton was saved by Davenant’s intercession.” For the existence of Davenant’s obligation to Milton, we have the testimony of Wood {Athmce. Oxon. ii. 412); and for the subsequent part of the story, the evidence may be distinctly traced from Richardson to Pope, and from Pope to Betterton, the immediate client and intimate of Davenant. (Symmons’s Life of Milton, pp. 489, 490.) 102 Milton, continued during the remainder of his life. Whilst in Jewin '—-v—^ Street he married his third wife, Elizabeth Minshull, daugh¬ ter of a gentleman of Cheshire. This step was rendered necessary by the undutiful conduct of his two daughters, upon whose attentions he was solely dependent for the management of his domestic concerns. His nuncupative will, which was discovered in the prerogative registry, and published by Warton, affords a glimpse into the interior of his house, and shows him to have been amiable and in¬ jured in that private scene, in which alone he has gene¬ rally been considered as liable to censure, or, at least, not entitled to affection. In this will, and the papers connect¬ ed with it, we find the venerable father complaining of his “ unkind children,” for neglecting him because he was blind ; and he was even compelled, by their injurious con¬ duct, to appeal against them to his servants. They sold his books; combined with the maid-servant, whom they ad¬ vised to cheat their father in her marketings; and other¬ wise acted a most unnatural part. A wife was therefore necessary to rescue him from such undutiful, not to say dangerous, hands ; and in the lady whom his friendly phy¬ sician, Dr Paget, selected for him, he appears to have ob¬ tained such a helpmate as his circumstances required. About the time of his marriage he published a short trea¬ tise on the Accidence of Grammar ; and, in the same year, he printed another manuscript of Raleigh’s entitled Apho¬ risms of State. Soon after his establishment in Jewin Street, Ellvvood the Quaker wras introduced to his acquaintance by Dr Paget. For some years, his daughters, whom he had taught to read Hebrew, Greek, Latin, Italian, Spanish, and French, as well as their own tongue, vvere in the habit of reading to him such works as he desired ; but when this became an irksome employment, and they complained, he released them from the task, and trusted to the kind offices of seve¬ ral friends, whose solicitude to minister to his comfort and enjoyment he gratefully acknowledges in some of his fa¬ miliar epistles. The kindness of Dr Paget provided him with a more certain and steady resource. Ellwood, in the hope of advancing himself in classical knowledge, solicited an introduction to Milton in the character of a reader; and in this great man, conciliated by the ingenuousness of his mariners and the goodness of his heart, the worthy Quaker soon found a friend as well as an instructor. To be near his illustrious friend, Ellw’ood took lodgings in the vicinity of Jewin Street, and every afternoon, that of Sun¬ day excepted, read to him such Roman authors as he was desirous oi hearing, from this accidental intercourse with the author ol the Paradise Lost, Ellwood is raised into an object of particular interest; and, in the history of his life which he left behind him, he not only speaks with the most affectionate regard of Milton, from whom, he says, he uniformly experienced the kindness of a friend and the instructions Oi a master,1 but relates many interesting par¬ ticulars respecting the literary occupations of his patron, anu also gives us an insight into the unassuming and con¬ descending character of the great poet. The following pas¬ sage in his narrative fixes the date of the completion of the d aradisc Lost, and also states the origin of the Paradise Regained. “ Some time before I went to Alesbury prison,2 in 1665, I was desired by my'guardian master, Milton, to take a Miltoi; house for him in the neighbourhood wdrere I dwelt, that'^—v-f he might get out of the city, for the safety of himself and family, the pestilence then growing hot in London. I took a pretty box for him in Giles Chalfont (in Buckingham¬ shire), a mile from me, of which I gave him notice ; and intended to have waited on him, and seen him well settled in it, but was prevented by that imprisonment. But now being released, and returned home, I soon made a visit to him, to welcome him into the country. After some com¬ mon discourses had passed between us, he called for a ma¬ nuscript of his ; which, being brought, he delivered to me, bidding me take it home with me, and read it at my lei¬ sure ; and when I had so done, to return it to him wuth my judgment thereupon. “ When I came home, and had set myself to read it, I found it was that excellent poem Paradise Lost. After I had, with the best attention, read it through, I made him another visit, and returned him his book, with due ac¬ knowledgment of the favour he had done me, in commu¬ nicating it to me. He asked me how I liked it, and what I thought of it; which I modestly but freety told him : And after some further discourse about it, I pleasantly said to him, ‘ Thou hast said much here about Paradise I^ost, but what hast thou to say of Paradise Found?' He made me no answer, sate some time in a muse, then broke off’ that discourse, and fell upon another subject. “ After the sickness was over, and the city well cleans¬ ed and become safely habitable again, he returned thither. And when afterwards I went to wait on him there, which I seldom failed of doing whenever my occasions drew me to London, he showed me his second poem, called Paradise Regained, and in a pleasant tone said to me, ‘ This is ow¬ ing to you; for you put it into my head, by the question you put to me at Chalfont; which before I had not thought of.”3 It thus appears that, by the middle of the year 1666, Milton had completed his two sacred poems, having occu¬ pied in all several years in the composition of Paradise Lost, but not more than ten months in that of Paradise Regained. The latter, indeed, seems to have been begun and brought to a conclusion during his residence at Chal¬ font, which probably extended from June or July 1665 to March or April 1666. But it was not until the lapse of a year after their completion that he committed either of these poems to the press. His contract with Samuel Simmons the bookseller, for the copyright of Paradise Lost, is dated the 27th of April 1667, and in the course of that year was given to the world the first edition of this mighty effort of intellectual power. “It is a great won¬ der,” says Toland, “ this piece should ever be brought to perfection, considering the many interruptions that ob¬ structed it. His youth was spent in study, travelling, and religious controversy ; his manhood was employed in affairs of state, or those of his family; and in his latter years, to speak nothing of a decaying fancy, nor of his personal troubles, he was, by reason of his blindness, ob¬ liged to write, by whatsoever hand came next, ten, or twenty, or thirty verses at a time, and consequently must trust the judgment of others, at least for the pointing and orthography.”1 But when this immortal epic poem had, in T 13 ra Sitri°ng dlS!:ke of thn E?Sbsh mode of pronouncing Latin. In Ins letter to Hartlib, he had declared that “ torea tVm TMbi1 an Ijl!Sllhh mouth is as ill a hearing as Law French.” He therefore required that Ellwood should learn and practis 'l ChI hetlsaid’ was necessary in conversing with foreigners. Ellwood complied with this injunctioi Whpn in'ro-. i€etltti, ’ .|!°Ug 1 j101, w^fout considerable difficulty, in accommodating his pronunciation to the taste of his maste: him q’n,l pvi ^ IC‘ classics, however, his tones betrayed his ignorance of what he read, Milton would, on such occasions, sto interemrsp bmvpv beei?ied M01 to yndei'stood; thus repaying the trouble of reading with the benefit of instruction. Thei mtercouise, however, experienced several interruptions. a succession of prisons^ ^ ^ ^Uaker meetiriS a party of soldiers, and, along with his associates, detained for a considerable time i ? Ellwood’s Life, pp. 134, 135. 4 Toland’s Life of Milton, p. 117. M I L T O N. MIL ;on. these painful and affecting circumstances, been completely prepared for the press, its birth was on the point of being intercepted by the ignorance or malice of the licenser, who had been restored with the monarchy, and whose quick nostril detected the scent of treason in the well- known simile of the sun in the first book. As when the sun new risen Looks through the horizontal misty air Shorn of his beams, or from behind the moon, In dim eclipse, disastrous twilight sheds On half the nations, and with tear of change Perplexes monarchs. Tomkyns, however, was, it seems, appeased, and the Para¬ dise Lost saw the light unmutilated by malignity orcaprice, being born to an immortality of fame. Much surprise and concern have been expressed at the small pecuniary benefit which the author derived from this proud display of his genius, and at the slowness with which the work laboriously won its way to public estimation. To us, who are accustomed to consider the Paradise Lost with¬ out any reference to its author or the age in which it ap¬ peared, it must certainly seem deplorable that the copy¬ right of such a composition should be sold for the sum of five pounds, and a contingent payment, on the sale of two thousand six hundred copies, of two other equal sums, or fifteen pounds in all. But if we consider the circumstances of the times, and call to mind the prominent part which Milton had taken in defence of the regicides and republi¬ cans, we should rather be surprised at the adventurous liberality of the bookseller who would give even this small sum for the production of a man living under the heaviest frown of the restored dynasty, and who was only remem¬ bered as the associate and apologist of the men who had overthrown the monarchy. Nor have the reflections which have been made upon the slow apprehensions of the men of that age any better foundation than the strictures which have been passed upon the parsimony of the bookseller. At a time when learning and the love of reading were far from being so widely diffused as at present, the sale of the poem was, all things considered, large and rapid. At the end of two years, thirteen hundred copies had been disposed of; in five years a second edition was issued; after another interval of four years, a third was called for ; and before the end of twenty years, it had passed through six editions;1 “a circumstance,” says Dr Symmons, “which abundantly proves that it was not destitute of popularity before it obtained its full and final dominion over the pub¬ lic taste from the patronage of Somers, and still more from the criticism of Addison.” In the second edition, which was published in 1674, the author divided the seventh and the tenth book each into two, and thus changed the origi¬ nal distribution of his work from ten to twelve books. TON. 103 Milton himself informs us that, after much deliberation, “long chusing and beginning late,” he fixed upon Para¬ dise Lost as the subject of his epic poem ; a design so com¬ prehensive that, as Johnson observes, it could be justified only by success. At a very early period of life he appears to have had in contemplation some production in the very highest region of poetry. The idea accompanied him to Italy, wheie, from the example of Tasso, and the conver¬ sation of Tasso’s friend the Marquis of Villa, it took the form of a determinate purpose, and seems to have become immoveably fastened in his mind. Butalthoughhe had made a covenant with his own mind to produce something w’hich men should not willingly let die, yet a long period appears to have elapsed before his choice of a subject was finally determined ; and there has been much curious inquiry, and anxious speculation, as to the circumstances by which, after long hesitation, it was at length fixed on Paradise Lost. It has been sought to detect the first spark which kindled this magnificent idea in the mind of the poet; and the sublime has been rendered ridiculous by the conceit of an overstrained ingenuity. Voltaire, on his visit to England in 1/27, suggested that the original hint of Paradise Lost had been supplied by an Italian comedy called Adamo, written by Andreini, a strolling player, and stuffed with bombast, conceit, and allegory. This suggestion, how¬ ever, attracted little notice at the time when it was offer¬ ed. It has since been rejected with contemptuous disdain by Johnson ; and we cannot think, with Dr Symmons. that it has derived any new importance from its adoption by Hayley and Warton.2 The conception appears to have developed itself gradually. At first it appeared in a semi¬ nal state, pregnant with latent possibilities of excellence ; by and by it assumed a more distinct form, striking out roots full of life, and indicative of vigorous vegetation ; anon it expanded in growth, and seemed about to take the shape of one of those wild and irregular dramas, anciently called Mysteries ; and at last, it towered in all its grandeur and magnificence, the mightiest production of creative ge¬ nius that the human mind has ever elaborated. It is curious to reflect on the steadiness of its growth under a compli¬ cation of adverse circumstances ; it is deeply interesting to behold it, like a Norwegian pine, ascending to a majestic elevation beneath a dreary and inclement sky, deriving its nurture and its strength from the very rocks into the cre¬ vices of which it has struck its roots, and braving at the same moment the tempest that rages above, and the wild commotion of the elements below. The only poem of modern times which can be compar¬ ed with the Paradise Lost is the Divina Cornmedia. The subject of Milton in some points resembles that of Dante, but he lias treated it in a very different manner. “ The poetry of Milton,” says Mr Macaulay, “ differs from that Milton. Milton lived to obtain the whole fifteen pounds, for which he had conditionally stipulated, on the 21st of December 1080; and his widow sold the absolute copyright, which he had bequeathed to her, for the sum of eight pounds. Twenty-three pounds was there- tore tlie entire sum which Milton and his family received for the copyright of the Paradise Lost. It is curious enough that the instru¬ ment hy which Milton conveyed this copyright to his publisher was not long ago purchased by Samuel Itogers for the sum of seventv- v