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empties itself into the sea near the Etang de Vendres, to the E. of Narbonne, running nearly parallel with the great canal of Languedoc. Its whole course is from 130 to 140 miles. The waters of the Aude are very turbid; and the deposits at its mouth have caused a considerable variation in the line of the coast. It had formerly two branches by which it flowed into the sea; but the canal Robine d'Aude, or Robine de Narbonne, has taken the place of one of these. This passes between the Etangs of Sigean and Gruissan, and then through the Etang de Sigean to the sea. Boats are very seldom seen on this river, except quite in the lower part of its course. It has no tributary of any consequence; the Orbieu, the principal, which falls into it on the right bank above twenty miles from its mouth, is forty to forty-five miles in length. The basin of the Aude is inclosed by Mont Espinouse and the Black Mountains, which are part of the chain of the Cevennes, and by the eastern extremity of the Pyrenees. (Malte-Brun; Encyclopédie Méthodique, &c.)

The Aude was known to the Romans by the name of Atax. They gave this name to the channel which passes by Narbonne to the sea. That part of this channel which passes through the Etang de Sigean was deepened, and faced and paved with stone, by the Romans.

AUDE, a department in France, taking its name from the river Aude, which flows through it. It is bounded on the N. by the departments of Herault and Tarn, on the N.W. by that of Haute Garonne (Upper Garonne), on the W. and S.W. by that of Arriège, and on the S. by that of Pyrénées Orientales. The east side is washed by the Mediterranean Sea. Its greatest length is in a direction nearly E. and W., and is about seventy-six miles; and its greatest breadth is about fifty-seven miles. The superficial content is about 2437 square miles; and the population 266,000, giving about 109 inhabitants to every square mile.

This department consists of the basin of the Aude, and the slopes of the mountains by which it is bounded. The N. and S. are consequently the parts of greatest elevation; the former from the commencement of the Black Mountains, and the latter from the rise of the Pyrenees. The centre is traversed by the Aude, whose course has been already described; and also by the canal of Languedoc, which, entering the department on the N.W., proceeds in a direction about E. by S., till it almost joins the Aude near Carcassone, and then runs parallel to the course of the river for many miles, until, again turning a little to the north of E., the canal quits this department for that of Herault, and the river pursues its course towards the sea.

The mountainous districts are dry and unfruitful, yet the agricultural produce of the department is more than sufficient for the wants of the inhabitants. The vine is cultivated to a considerable extent; the figs are excellent; and an herb, called sallicou or salicot, which grows here, is gathered, dried, and sent to other departments, or to Italy, to be used in the manufacture of glass. Honey, known by the designation of Narbonne honey,' forms an article of considerable commercial importance. The mineral wealth of the department is not great; though silver, copper, lead, and iron are procured, as well as marble in great variety, gypsum, and some coal; and there are salt-works near the Etang (or Pool) of Sigean, one of the lagoons which line the French part of the Mediterranean coast. At Bize is a cavern, in which human bones are said to have been found along with those of the stag, camel, roebuck, antelope, and bear.

The inhabitants carry or considerable manufactures, which are promoted by the advantage of inland navigation through the canal of Languedoc. Woollen cloth may be regarded as the staple manufacture. It is carried on at Carcassonne and Castelnaudary, both of which towns are on the canal, and at Limoux. Wax, oil, brandy, leather, and glass, are among the productions of the industry of this department. The iron-works also are of some importance. The little town of St. Colomb sur l'Hers (with a population of about 1000) is noted for its turnery and toys.

vince of Languedoc, is under the jurisdiction of the Cour Royale (Assize Court) of Montpelier. It sends four deputies to the Chamber. It forms the diocese of Carcassonne, the bishop of which is a suffragan of the Archbishop of Toulouse and Narbonne. (Malte-Brun; Balbi; Dictionnaire Universel de la France.)

AUDEBERT, JEAN BAPTISTE, was born in 1759, at Rochefort, in France. His father was a dealer in provisions for the supply of the shipping. Young Audebert, when seventeen years of age, went to Paris to study the arts of design and painting. He soon excelled as a miniature-painter, and supported himself honourably by his labours in this way. Fortunately, in 1789, M. Gigot d'Orcy, receiver-general of taxes, who was distinguished by his taste for natur. history, to the promotion of which he gave the most mun: ont encouragement and assistance, having had an opportunity of judging of the talents of Audebert, employed him to paint the most rare objects in his magnificent collection, and afterwards sent him to England and Holland, whence he brought back a great many drawings, which were used in Olivier's Histoire des Insectes. These occupations gave a bias to Audebert in favour of natural history, which soon amounted to an ardent passion. No longer content to give expression to the ideas of others, he undertook various important works. The first of these was Histoire Naturelle des Singes, des Makis, et des Galeopithèques, one vol. large folio, with sixty-two plates, the figures coloured, Paris, 1800. The appearance of this work caused a great sensation among naturalists, for Audebert united in his own person the characters of painter, engraver, and author. Having carefully investigated the different modes of engraving, and the trials which had previously been made to colour the engravings of objects of natural history, he improved upon these so much, that he may be said to have invented a new mode, and to have carried it to the highest degree of perfection. This improvement consisted in putting all the colours on one plate at once, instead of using as many plates as there were colours: he made a further improvement by using oil instead of water colours. He also succeeded in printing with gold, the colours of which he varied in such a manner as to imitate the most brilliant hues of the originals. In his Histoire des Colibris, des Oiseaux-Mouches, des Jacamars et des Promerops, 1 vol. large folio, Paris, the expression and position of the birds are so perfect as to make them appear animated; and the descriptions, of which he is likewise the writer, are worthy of such a work. Two hundred copies only were printed in folio, in which the name at the foot of each figure is printed in gold; one hundred copies in large quarto; and only fifteen copies in folio, of which the whole text is printed in gold.

Scarcely were these works commenced before Audebert began to plan others-the history of Birds, of the Mammifera, and lastly that of Man. He had thus chalked out for himself work enough to occupy a long life; but in 1800 death carried him off in the forty-second year of his age. At the time that death interrupted his career, he had begun the Histoire des Grimpereaux et des Oiseaux de Paradis, &c., 1 vol. The publisher, M. Desray, who was in possession of his materials and the processes which he had discovered and employed, completed these two works in as perfect a manner as those which had been finished by the author himself. The text was edited by M. Vieillot, a naturalist, and friend of Audebert. These two works are united under the common title of Oiseaux Dorés ou à reflets métalliques, 2 vols. in large folio and large quarto, Paris, 1802. Upon the same plan, and by the adoption of the same processes, M. Vieillot has published l'Histoire des Oiseaux de l'Amérique Septentrionale. The Birds of Africa (Les Oiseaux d'Afrique) of Le Vaillant are indebted for their excellence to Audebert, who superintended the printing of the plates as far as the 13th part. Other branches of natural history, and especially botany, were enriched by the discoveries of Audebert, as may be seen in the splendid works Le Jardin de Malmaison, by Ventenat, and the Liliacées of Redouté.

The principal towns are Carcassonne, the capital of the Audebert was not more remarkable for his talents than department (population 18,000), Castelnaudary, and Nar- beloved for his amiable manners and generosity of dispobonne (population of each 10,000), and Limoux (popula-sition. Though naturally tranquil and of a reflecting chation 7000). These are all chief places of arrondissemens.racter, he had much gaiety of mind, was fond of literature, Alet, on the Aude, celebrated for its medicinal waters, has 1100 inhabitants. [See CARCASSONNE, CASTELNAUDARY, LIMOUX, and NARBONNE.]

This department, which coincides with part of the pro

and even wrote comedies. We are not aware that any of these have been published, but his other works will always ensure him a high and lasting place among the promoters of the science of natural history. (Biog. Universelle.)

AUDIANS. [HERETICS.] AUDITOR, an officer or agent of the king, or of a private individual or corporation, who examines periodically the accounts of under-officers, tenants, stewards, or bailiffs, and reports the state of their accounts to his principal. Auditors of the Imprest.-Antient officers of the exchequer, abolished in 1785.

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Auditors of Public Accounts, or, more strictly, Commissioners for auditing the Public Accounts,' are public officers originally established by the 25 Geo. III. c. 52, in place of the patentees of the office of auditors of the imprest (Lord Sondes and Lord Cardiff), whose patents were vacated with compensation by that act, and their functions and powers transferred to the commissioners above mentioned. The King is authorized by the stat. 46 Geo. III. c. 141, to appoint ten of these commissioners, who hold their offices during good behaviour, with salaries of 1500l. per annum to the chairman, and 12007. per annum to the other commissioners. They are incapacitated from sitting in parliament, and are sworn to execute the duties of their office faithfully and impartially. There is a provision in the statute, that no vacancy which may arise by death or otherwise in the number of commissioners after the first appointment shall | be filled up without the express authority of parliament, until the number is reduced to five, in which case the King may, from time to time, appoint new commissioners, so as to keep their numbers always to six. Two of the number are, by the 1 & 2 Geo. IV. c. 121, s. 17, empowered to examine parties on oath, and do all acts concerning the audit of public accounts.

By the 46 Geo. III. c. 141, sec. 8, all public accountants are to transmit to the commissioners within three months after 31st December, or within three months of such day as the lords of the treasury shall order (see 2 & 3 Will. IV. c. 104), accounts duly attested, in manner pointed out by the act, of all sums received and paid by them for the public service within the preceding year, together with proper vouchers for such receipts and payments, and a schedule of the same; which schedule is to be compared with the vouchers by an officer in the Audit-office. The commissioners may call on all public accountants, whenever they think fit, to account to them for the receipt, expenditure, or issue of all moneys or stores intrusted to them, and on failure they are to certify the defaulters' names to the remembrancer of the exchequer, and the attorney-general of England or Ireland, and lord-advocate of Scotland, in order that proceedings may be taken to compel them to account, unless, on the defaulter's application, the lords of the treasury think it proper to stay the proceedings for a reasonable time. By the stat. 1 & 2 Geo. IV. c. 121, it is enacted, that at the four quarter-days, the 5th day of January, 5th day of April, 5th day of July, and the 10th day of October, general imprest certificates shall be made out at the exchequer, specifying all moneys and exchequer bills issued at the receipt of the exchequer within the preceding quarter, and these certificates are transmitted to the commissioners of audit within thirty days after each quarter-day; and by the 10th section of 46 Geo. III. c. 141, the paymaster of the forces, the treasurers of the navy and ordnance, and all other public officers, who issue to any persons money for public services by way of imprest or on account, are required within three months after the 31st December in every year (or at shorter periods if ordered by the lords of the treasury, see 1 & 2 Geo. IV. c. 121, sec. 6) to transmit to the commissioners of audit a certificate of such moneys, with the names of the persons to whom paid, and the commissioners are forthwith to take them into consideration. By the above-mentioned statute, 1 & 2 Geo. IV. c. 121, various regulations have been made respecting the mode of conducting the business of the commissioners of audit, by which the antient and inconvenient system of keeping the public accounts has been superseded. The whole of the arrangements in the Audit-office are now subjected to the control of the lords of the treasury, who are authorized to make such orders and regulations for conducting the business of the office as they may think expedient, and best calculated to ensure the efficient discharge of the duties of the commissioners and other officers. By the 2 Will. IV. c. 26, the above commissioners are authorized to audit the accounts of receipt and expenditure of the colonial revenues; and the 2 and 3 Will. IV. c. 99, transfers the powers and functions of the commissioners of public accounts in Ireland to the commissioners for auditing the public accounts of Great Britain.

No. 146.

AUDRAN, GERARD. This eminent engraver w born at Lyons, A.D. 1640. He learned the principles of design and engraving from his father, who was also an artist. At an early age he went to Paris, where his talents soon obtained notice, and procured him eventually the patronage of Le Brun, the king's painter, who employed him to engrave the Battle of Constantine, and the Triumph of that emperor. He went subsequently to Rome, where he resided three years, and improved himself in design in the school of Carlo Maratti. Among many fine plates which he executed at this period, a portrait of Pope Clement IX. excited particular admiration; and M. Colbert, a great patron of the arts, conceived so high an opinion of Audran's talents, that he persuaded Louis XIV. to recall him to France. On his return he was appointed engraver to the king, and in the year 1681 was nominated councillor of the Royal Academy. He died at Paris, A.D. 1703, aged sixty-three. Gerard Audran was unquestionably one of the greatest historical engravers that has ever existed. By some judges, and those not inadequate ones, the very first place has been assigned to him. His reputation perhaps rests chiefly on the celebrated series of plates after Le Brun's Battles of Alexander, respecting which the painter himself confessed that his expectations had been surpassed. It is indeed impossible to contemplate without the highest admiration the skill, intelligence, and extraordinary facility exhibited by his burin throughout those immense and intricate compositions. Although completely a master of the mechanical execution of his art, he attached little importance to that clear and methodical arrangement of lines which forms the chief point of ambition with many other engravers. style is composed of a bold mixture of free hatchings and dots, placed together apparently without order, but rendering, with admirable effect, not merely the contours, but the mind and feeling of the painter; and his style is so entirely free from manner, that on looking at his prints we lose sight of the engraver, and are reminded only of the master whom he is transcribing. To feel the truth of this remark, it is only necessary to glance at the above-mentioned Battles of Alexander, after Le Brun; the Preservation of the young Pyrrhus, after Nicholas Poussin; the Plague, after Mignard; and the Martyrdom of St. Laurence, after Le Sueur; in which works the respective style of each painter is rendered with the most distinct yet delicate discrimination. Audran owed his extraordinary excellence not only to his consummate skill in design, but in a great measure to his frequent habit of painting from nature; and several subjects which he engraved from his own designs attest the extent and versatility of his powers.

His

Gerard

The works of Gerard Audran may be classified under four heads, exclusive of his portraits:

1. His slight prints or etchings, to which little or nothing was done with the graver. Among these may be enumerated the Deluge, from Le Fage; the Passage through the Red Sea, from the same; the Combat of Joshua against the Amalekites, from the same; the Empire of Flora, from Poussin; the Preservation of Pyrrhus, from the same; a Ceiling, from Le Brun, representing the Seasons, in five plates, and dedicated to Louis XIV.

2. Those which are more finished, but in a rough, bold manner. For example: Paul and Barnabas at Lystra, from the tapestries in the Vatican, after Raffaelle; Coriolanus appeased by his Family, from Poussin; Time supporting Truth, from the same; the ceiling of the Chapel de Saulx, representing the accomplishment of the old law by the new one, engraved in 1681, from Le Brun, in six large plates which join together-a work distinguished by great spirit, character, expression, and beautiful drawing; the Death of St. Francis, from Annibale Caracci.

3. Those in his most finished manner, as the Battles of Alexander, from Le Brun: namely, the Passage of the Granicus; the Battle of Arbela; Porus brought to Alexander. To this set are added two more large prints as follow:Alexander entering the Tent of Darius, and the Triumphal Entry of Alexander into Babylon: those impressions are most esteemed which have the name of Goyton, printer, marked on them. The Plague, from Peter Mignard; the Baptism of the Pharisees, from N. Poussin; the Martyrdom of St. Laurence, from Eustace le Sueur; the Martyrdom of St. Agnes, from Domenichino.

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4. Such as he did with the graver only these are few, and perhaps unequal in merit to the preceding. We need only mention Eneas saving his father Anchises from the

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plunder of Troy, after Dominichino; a small folio frontispiece to the effigies of the popes and cardinals, published at Rome, from Cyro Ferri.

A few only of his works are here enumerated. This catalogue is from Strutt's Biog. Dict. of Engravers.

AUERSTADT, a village of about 500 inhabitants, in the Prussian circle of Merseburg (about eight leagues to the north-east of Erfurt), which owes its celebrity to the defeat of the main body of the Prussian army by a division of the French army under Marshal Davoust, on the 14th of October, 1806. For this brilliant achievement Davoust received the title of Duke of Auerstädt from Napoleon. On the same day Napoleon defeated Prince Hohenlohe at Jena; the two battles have usually gone under the name of the Battle of Jena,' as part of the same field, though they were quite distinct, and indeed some leagues from each other. AUGE'R, ATHANA'SE, was born at Paris in 1734. Having entered the clerical profession, and taken orders, he applied himself indefatigably to the study of the Greek and Roman writers, especially the orators. He was appointed professor of rhetoric in the college of Rouen. The bishop of Lescar having become acquainted with him, made him his grand vicar, and used to call him jestingly his vicar in partibus Atheniensium, alluding to his Greek erudition, and his passion for that language. Auger's first publication was a translation of Demosthenes and Æschines, 5 vols. 8vo. 1777. This was the first French translation of all the works of those two great orators, and Auger enriched | it with treatises on the judiciary system and the laws of the Athenians, and on the constitution of their republic. He now settled at Paris, where he lived in modest seclusion upon a small income, entirely devoted to his favourite studies. After the publication of his translation he was elected a member of the Academy of Inscriptions. His next works were a translation of Isocrates, 3 vols. 8vo., 1783, and one of Lysias, 8vo., same year. He applied with equal zeal to the study of the great Roman orator, and translated the whole of his Orations, of which he published selections. He wrote at the same time a work on the constitution of Rome: De la Constitution de Rome sous les Rois, et au tems de la Republique, which was published after his death as an introduction to the whole of Cicero's Orations, 10 vols. 8vo. 1792-4. The essay on the Roman constitution fills the first volume, and as an abridgment it may even now be consulted with profit, although it has been in some measure superseded by Niebuhr's more elaborate and more profound work on the history of Rome. Auger's object was to develope the system and the working of the Roman political institutions in their three essential parts-the legislative, the executive, and the judiciary. The second volume is a continuation of the first, being engrossed by a life of Cicero, chiefly relating to his public character, and his connexion with the state and vicissitudes of the Roman republic at the epoch preceding its fall. The study of Cicero and of Roman history occupied, in great measure, the last thirty years of Auger's life. He however published, in the mean time, selections from the works of the two Greek fathers, Chrysostom and Basil: Homelies, Discours, et Lettres choisies de St. Jean Chrysostome, 4 vols. 8vo. 1785; and Homelies et Lettres choisies de St. Basile le Grand, 8vo. 1788.

The first symptoms of the French revolution found Auger deeply engaged in his meditations on the Greek and Roman republics. He felt naturally favourable to the general principles of constitutional liberty which were then promulgated in France, and he wrote several pamphlets in favour of them. One subject, which more than others seemed to have attracted his attention at the time, was that of a new system of public education. In his Projet d'Education Publique, précédé de quelques Reflexions sur l Assemblée Nationale, 8vo. 1789, he traced the outlines of two distinct plans: one for learned or classical education, and another for the education of those who, not being able or not wishing to study Latin and Greek, might yet be desirous of being instructed in the literature of their own country, and of studying rhetoric, philosophy, and jurisprudence, in their native language. In a subsequent little work, Catechisme du Citoyen Français, 16mo. 1791, he reverted to the subject of education, observing, that his former plan being intended for the higher and the middle classes, there still remained a much more numerous class, including the humbler ranks of the towns people and the rural population, for whom he had sketched out the present catechism. 'It may have been

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deemed advantageous, he observes, under the former system of government, to keep this vast multitude in ignorance but such a state of ignorance becomes dangerous now. This class, with the knowledge of its strength, ought also to acquire the knowledge of how to use that strength without abusing it—it ought to be told its duties as well as its rights-it ought to become instructed, orderly, and moral.' In his catechism he clearly defines the rights and the duties of individuals under a system of well-understood liberty; and he draws the line between liberty and the abuse of it-between equality before the law, and social inequality, which is inherent in the nature of men. That line, however, was soon after obliterated, and the consequences were fatal to France and to Europe; but the good Auger was spared the grief of seeing the catastrophe: he died in February, 1792, regretted by all who knew him. Herault de Sechelles, who afterwards figured as a member of the Convention, and who had studied Greek under Auger, com posed his funeral eulogy. Auger was a man of great learning, with the simplicity of a child. His last work, a treatise on Greek tragedy, was published a few days after his death.

AUGEREAU, PIERRE FRANCOIS CHARLES Duke of Castiglione and Marshal of France, was born of humble parents (his father was said to be a fruiterer) in Paris on the 11th of November, 1757. He first enlisted in the French carabineers, and from thence entered the Neapolitan service. He obtained his discharge in 1787, but continued to reside at Naples, where he gave lessons as a fencing-master. When the French were exiled from Italy in 1792, Augereau volunteered into the revolutionary armies of his country, and joined that which was intended to repel the Spaniards. As all the officers had emigrated Augereau rose rapidly, and became in a short time Ad jutant-General. It may be observed, that Dugoumier appointed to command the army of the Pyrenees, pro ceeded from the capital to his head-quarters on foot, so that the want of birth or wealth was no obstacle to Augereau. During 1794 he distinguished himself by the capture of an important foundry, and by extricating a division which, under another officer, had fallen into a dangerous position. Augereau received two wounds on this occasion. Soon after the army was divided, and Augereau was put in command of one division. He was then removed to a more important scene of warfare in Italy, and became one of the chief instruments in executing the first bold manœuvres of Bonaparte. It was under Augereau that the French carried the passes of Millesimo, in the spring of 1796; at Dego he again rendered eminent service; and again, Augereau's brigade, with himself at its head, rushed upon the bridge of Lodi, and finally carried it in the teeth of the enemy's batteries. He was foremost in the advance into the Venetian territories; and being dispatched to repel the hostilities of the Papal troops, he took Bologna. At Lugo, unfortunately, he was driven by the desperate resistance of the inhabitants to those excesses that rendered the name of Frenchmen execrable in Italy. He gave up the village to plunder and massacre.

The field of battle was Augereau's proper sphere; away from it, he descended into the rank of common men; and yet it was not merely as a subordinate general, or as an executor of his commands, that he rendered good service to Bonaparte. Ardent as this young commander was, he felt that the French had advanced too far, and that it was prudent for the present to retire before the fresh army under Wurmser, which Austria was pouring into Italy. Augereau combated the idea of retreat with all his energy; he represented the spirit of the army as invincible, and he at last decided Bonaparte to attack, instead of retiring. The consequence was the battle and victory of Castiglione, of the glory of which Augereau reaped the greater part. It also procured him the title which he afterwards enjoyed as Grandee of the French empire.

The most brilliant action of this campaign, so rich in feats of heroism and generalship, was the battle of Arcole, which took place in the middle of November. The object was to pass a bridge, defended not only by batteries of cannon, as that of Lodi had been, but also by overhanging walls and houses, from which the enemy sent a shower of fatal musquetry. The French had been several times repulsed, when Augereau, seizing a standard, bore it upon the bridge, followed by a column, which nevertheless was un able to advance against the grape-shot and musquetry. He

was unable to effect the passage over the bridge, but still he was rewarded by a decree of the Directory, granting to him, in commemoration of his bravery, the standard that he had borne on the occasion. [See ARCOLE.]

In the following year, 1797, the attention and interest of the French army were withdrawn from the foreign enemy, and fixed upon the parties which disputed for supremacy at home. The Directory was menaced by the Royalists, as well as in a great measure by the friends of constitutional government, who now began to rally to the cause of royalty in despair of realizing their ideas under a republic. But this party, amongst its other imprudent acts, committed the great mistake of making the armies hostile to it. Bonaparte was accused for his conduct towards Venice, and was treated as an accomplice of the Directory. The general replied by offering his services to the Directory, and by sending addresses from his soldiery in favour of republicanism. In the camp of the army of Italy Augereau was so loud in his execrations of royalty, and so extreme in his revolutionary ideas, that Bonaparte, at once to get rid of him, and to provide the Directory with a useful agent, sent him to Paris. Here he continued his tone of vaunting and violence amidst the feasts and honours with which he was welcomed, and he was soon named military commander of the district which included the capital. The very nomination was enough to warn the opposition that the Directory meditated violent measures, and they accordingly endeavoured to obtain the dismissal of Augereau. The coup d'état, or revolution of Fructidor, was planned by Barras, and ably executed by Augereau; the guard of the legislative body was driven from its post; the Tuileries, where the assembly sat was invested; the members hostile to the Directory were seized; and a most infamous act of illegality and injustice was consummated with the utmost skill and success.

the recovery of his health. In the years 1809 and 1810, he commanded in Catalonia, where he showed but little mercy to the Spaniards. Considering Augereau as a ve teran general, Napoleon, instead of taking him to Russia in 1812, left him to form a corps of reserve at Berlin, But here the Cossacks found him in 1813, and it was with some difficulty that he escaped. Notwithstanding his age, Augereau took part in the campaign of Saxony, and made a valiant stand near Leipzig, defending a wood against superior forces. In 1814 he was intrusted with the defence of the south-east of France against the Austrians, when he occupied Lyons, and organized its defence. At first he repulsed them in several combats; but at length, aware of their prodigious superiority of force, as well as of the diminishing resources of Napoleon, he made a capitulation, and retired to the south.

Napoleon considered his conduct on this occasion as little short of treachery; and it is certain that, of all the Marshals, Augereau was the least attached to a master who was so much his junior, and who, by his usurpation, had blasted the ambition of the republican general. Au gereau made his peace with the Bourbons, was confirmed in his dignities, and created a peer. On the return of Napoleon in 1815, Augereau kept aloof. Louis XVIII. being a second time restored, Augereau reappeared, when the painful task was imposed upon him of being one of the council to try Marshal Ney. His vote of condemnation on his brother soldier is the greatest blot upon Augereau's memory in the eyes of the French. He did not long survive, being brought to the grave by a dropsy in June, 1816.

AU'GILA, or AUDJELAH, as the Arabs pronounce it, is a town situated in an oasis within the great Desert of Barca, on the track of the caravans which trade between Cairo and Fezzan. Augila is mentioned in the antient geographers. Rennell, in his Geography of Herodotus, Augereau was rewarded for this important service by the places Augila in 30° 3′ N. lat., and 22° 46' E. long., 180 command of the army on the German frontier. Here he miles S.E. of Barca, or Bengazi, 180 W. by N. of Siwah, in surrounded himself with the most furious Jacobins, and the Oasis of Ammon, and 426 E. by N. of Moorzook in displayed so dangerous a spirit, that the Directory was Fezzan. Herodotus (iv. 182) places Augila ten days' jourobliged to deprive him of the command, and remove him to ney from the city of the Ammonians; and Hornemann, Perpignan. Augereau found his way to Paris, and was who travelled from Siwah to Augila in 1797, found the there on Bonaparte's return from Egypt. It is much to calculation correct. The Oasis of Augila is a dependAugereau's honour that, discontented as he was with the ence of the Beylick of Bengazi, which is itself a province Directory, and connected as he had been with Bonaparte, of the regency of Tripoli. It contains two other towns the latter could not count upon his assistance in the revo- or large villages, besides Augila, namely, Mojabra and lution of the 18th Brumaire. Bernadotte and Augereau Meledila. The people are chiefly employed in the caravan were the only generals whom Bonaparte dared not summon trade; and they have established, of late years, direct comto his side. Augereau was at St. Cloud; for he had been munications with the countries of Borgoo, Bornoo, and elected deputy to the Cinq Cents, and anxiously hoped that Bagherme, without passing through Fezzan. They have the representative body and the republic would triumph also caravans which trade with the port of Bengazi, on over the military usurper. While the result of the struggle the Mediterranean Sea. The country round Augila is was doubtful, he approached Bonaparte and said, 'Well, sandy and flat, but well watered and cultivated chiefly in you have brought yourself into a pretty dilemma.' Auge-gardens. Of the dates of Augila, spoken of with praise reau, rejoined Bonaparte, remember Arcole; my fortune by old writers, and especially by Abulfeda, Hornemann seemed more desperate there; yet I retrieved it then, and makes no mention. shall now!' He was right; the usurpation was completed, and Augereau obliged to submit with the rest.

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Bonaparte distrusted his old comrade too much to appoint him again to the army of Italy. During the campaign of Marengo, Augereau commanded a division, for the most part Dutch, on the Lower Rhine, where he had hard fighting and little glory. After the treaty of Luneville, he retired to a property which he had been enabled to purchase near Melun. He was intrusted with no important employ until 1805, when. with the new dignity of Marshal, he commanded the division of the great army which reduced the Voralberg. In 1806 he was engaged in the battle of Jena, and commanded the division which subsequently took possession of Berlin. The terrible winter campaign which ensued undermined the health, but added to the glory, of Augereau. In the advance through Poland, he was frequently engaged, and commanded the left of the French at Eylau. His division, which was ordered to attack the centre of the Russians, advanced for that purpose, when a thick shower of snow covered both armies, and totally prevented Augereau from seeing. He missed, in consequence, the desired direction (so say the partisans of Napoleon), but his fault was remedied by the quickness of his commander, as well as by his own courage; though seized with sudden illness and fever, Augereau had himself tied upon his horse, and remained to the last in the action, though he was wounded.

After the battle of Eylau, he was obliged to retire for

The women of Augila make grey woollen cloths, called Abba, which are sold in Fezzan. The town of Augila is ill built and dirty. The inhabitants speak, besides Arabic, another language which resembles that of Siwah, of which Hornemann gives a short vocabulary.

AUGITE. The minerals to which this name has been applied present us with some of the most interesting and at the same time most difficult investigations that can fall under the notice of the mineralogist and chemist, and have frequently occupied the attention of the most eminent men in both sciences. Nor are these bodies unworthy of such attention. For not only would a thorough knowledge of their constitution, and the relation which they bear to other minerals, particularly to the genus hornblende, tend much to the perfection of the mineralogical system; but, owing to their frequent occurrence in nature, and from their forming one of the principal ingredients in many porphyritic and trap rocks, such as the syenite, diallage, and schorl-rocks, green-stone, &c., they form a class of bodies of the highest importance to the geologist. A due regard to the circumstances which are favourable to the formation of one or other of the species, to the exclusion of the rest, would be likely to afford a safe guide in many geological inquiries into the character and formation of rocks of igneous origin. For such reasons we shall endeavour to lay this subject before our readers in as satisfactory a manner as possible; but in doing so we encounter considerable difficulty, owing to the uncertain state of our own knowledge on many in

portant points, as well as from the various views which have been taken of these minerals by different writers, the effect of which has been the use of the term 'augite' in a more comprehensive sense by some authors than by others. Under these circumstances, we have thought it most advantageous to give an outline of the different views which have originated from the highest authorities, rather than to adopt any one opinion which is not incontrovertibly esta blished: the advantages which we hope to attain by this plan are twofold, namely, to avoid the risk of endeavouring to establish any erroneous opinions, while we attain a more comprehensive view of the whole.

As little would be learnt by inquiring into the views taken of the genus augite before the time of Werner, it need only be stated, that this mineralogist was the first to divide a large class of minerals, occurring commonly in basalt, lavas, and other volcanic rocks, into two species, to which he applied the names of augite and hornblende. This division was founded on the difference existing between the crystallized forms and structure which, according to the experience up to that time, were never associated with each other. The same division was shortly after adopted by Hauy, who applied to them the names of pyroxene and amphibole, and gave the measurements, determining the oblique rhombic prisms, with their most general modifications characteristic of either species, which, however, we have modified by the later measurements of Rose, Mitscherlich, and Kupffer.

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the augite genus, is readily recognized by the form of its
crystal given in fig. 1, and by the direction of its four
cleavage planes, the most perfect corresponding with the
faces M, those in the direction of r and l'being less easily
obtained; and by its pale-green, or greyish-white colour,
and vitreous lustre. Its hardness is 5 5, and its specific
gravity is 3 299. Alone before the blowpipe it melts into a
colourless, semi-transparent glass; with borax, very readily
into a transparent glass. Its chemical constitution is ex
pressed by the formula given above, as will be seen by the
following analysis of a variety from Tammare by Bons-
dorff:-
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It is of a dark-green colour, sometimes nearly black.
3. Sahlite, those varieties in which the magnesia is only
in part replaced by protoxide of iron, and whose composition
G. Rose expresses by

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Mg Si
Fef

Berzelius gives the formula,

(Ċ Ši2 + Fe Ŝi) + 2 (Ca Si3 + Mg Ši2),

as expressing the constitution of a variety from Björmyre, in Sweden, which would therefore be one equivalent of hedenbergite united with two of diopside. He calls it malakolith. (See Anwendung der Löthrohrs, by Berzelius.)

4. Diallage: the constitution of this variety is expressed, on the authority of

Berzelius, by

Fe Si2 + 3 Mg Šio,
Mg Si2 +

Inclination of M on M is

M on r

87° 6' 133° 33'

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M
Pon
M

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of F. Kobell, by

Calgie

Si

Fe

Mn

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is meant the edge formed by the intersection of the faces s and s,
M and M, &c.

Professor Mohs, however, together with Professor Jameson of Edinburgh, has used the term augite to denote the eighth genus of their respective systems, which consists of the four species designated as follows:

First species. The oblique-edged augite, corresponding with the augite of Werner, and pyroxene of Haüy. Second species. The straight-edged augite, corresponding to hornblende and amphibole.

Third species. Prismatoidal augite, containing as subspecies the minerals epidote or zoisite.

Fourth species. Prismatic augite; tabular spar, or Wollastonite.

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Berzelius, on the contrary, viewing the subject in a chemical point of view, has been induced to use the term augite or pyroxene, hornblende or amphibole, in the same signification as employed by Werner and Haüy. According to him, the augites are composed of one equivalent of the bisilicate of lime, united with one equivalent of the bisilicate of mag-pearances and characters to diallage, has the following nesia, which expressed in his chemical notation, on the supposition, however, that silica is formed of one equivalent of oxygen to one of silicium, is

Ca Si + Mg Sio.

There are several varieties of this genus formed by the removal of the magnesia or lime, which are replaced either by one or both of the isomorphous substances-the protoxide of iron, and protoxide of manganese. Of these the following are the principal:

1. Diopside, which may be considered as the type of

constitution: Fe Si2 + Mg Si. Both of the last-mentioned varieties may be distinguished from the former, as well as from each other, by means of the blowpipe, and by attending to the following characters as stated by Berzelius:

Diallage alone in a matrass decrepitates, becomes of a lighter colour, and gives off a little water.

On charcoal it is with difficulty melted on the edges into a grey scoria.

With borax it is difficultly fused into a clear glass, some what coloured by the protoxide of iron.

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