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 ire LARREY member of the academy of moral and political sciences. In 1811 he was called to the chair of philosophy in the faculty of letters at Paris. His professorship was filled by a deputy from 1813, but he continued to be librarian of the university. His philosophical system is a modi- fication of that of Condillac. His principal work is the Lemons de philosophic (2 vols., 1815-'18), which embraces the lectures deliv- ered by him in 1811 and 1812, and has been from its first appearance adopted for public in- struction in France. In later editions other important writings have been included. LARREY. I. Dominique Jean, baron, a French surgeon, born at Baude"an, near Bagnres-de- Bigorre, in July, 1766, died in Lyons, July 25, 1842. He studied medicine and surgery at Toulouse, and in 1787 went to Paris, where he was appointed surgeon to a frigate, in which he visited America. After returning to France he became an army surgeon (1792), and served during the wars of the revolution. It was at this time that he invented the ambulances volantes, for which he was rewarded with pro- motion to the rank of surgeon-in-chief. In 1798 he accompanied the French army to Egypt, where at Aboukir and Alexandria he displayed remarkable bravery. At Austerlitz he attended to the wounded under the heaviest fire; at Eylau he saved a great number of wounded by his daring ; at Essling he killed his own horses to make soup for the wounded when other food was wanting; on the battle field of Wagram he received the title of baron ; while in Spain and in Russia he extended the same care to the enemy's wounded as to those of the French. At the battle of Waterloo he was wounded, carried as a prisoner from post to post, and was about to be shot when he was recognized by a Prussian soldier and led to Bliicher, the life of whose son he had for- merly saved, and by whom he was sent under escort to Louvain. On the restoration he was summoned by the emperor Alexander to Paris. He was deprived of his pension, but was made surgeon-in-chief of the royal guard. His pen- sion was restored to him in 1818 by special res- olution of the chamber. Napoleon in his will left Larrey 100,000 francs. " If the army ever erect a monument of gratitude," said the em- peror, " it should be to Larrey." Two statues were afterward raised to him, one in 1850 in the court of the Val-de-Grace hospital, another in the hall of the academy of medicine. After the revolution of July he travelled in Belgium, southern France, and Italy, for the purpose of studying epidemics. In 1842 he was engaged in inspecting the hospitals in Algeria, where he was attacked by pneumonia ; he hastened to return to Paris, but died on the road. His discoveries relative to gun-shot wounds, chol- era, ophthalmia, tetanus, extraction of foreign bodies from the brain, and amputations, were all of the highest importance. There were few branches of surgery on which he did not advance new and valuable views. He was the LA SALLE author of a great number of medical works and memoirs, many of which have been trans- lated into foreign languages. II. Felix Hippo- lyte, baron, son of the preceding, born in Paris, Sept. 18, 1808. He served as a surgeon with the French army at the siege of Antwerp in 1830, became professor of pathology at the Val-de-Grace in 1841, and was surgeon in or- dinary to Napoleon III., and chief surgeon in the Italian campaign of 1859. In 1867 he was elected a member of the academy of sciences. His writings consist chiefly of reports and con- tributions to periodicals. LA RUE, a central county of Kentucky, drained by Rolling fork of Salt river ; area, 182 sq. m. ; pop. in 1870, 8,235, of whom 965 were col- ored. It has a rolling surface and a good soil. The Louisville and Nashville railroad skirts the S. "W. border, and the Knoxville branch passes through the county. The chief produc- tions in 1870 were 61,537 bushels of wheat, 314,424 of Indian corn, 70,807 of oats, 368,- 100 Ibs. of tobacco, and 110,964 of butter. There were 3,046 horses, 1,783 milch cows, 2,850 other cattle, 9,064 sheep, and 19,670 swine ; 4 distilleries, 4 flour mills, and 3 saw mills. Capital, Hodgensville. LARVA, the first and much the longest stage of the life of an insect, after emerging from the egg. The form is wingless, generally elon- gated and worm-like, known as the caterpillar, grub, or maggot, according to the order of the insect. In this stage most of the time is spent in eating, and the growth is very rapid, with frequent change of the skin. After a time this state passes into that of the pupa or chrysalis. (See CATEEPILLAE.) LARYNX. See LUNGS. LA SALLE. I. A S. W. county of Texas, in- tersected by the Rio Frio and the Rio Nueces ; area, 1,400 sq. m. ; pop. in 1870, 69. Water is scarce, and the county is not adapted to agri- culture, but grazing may be successfully pur- sued. Fort Ewell, a government post, is with- in its limits. In 1870 the county produced 26,000 Ibs. of wool, and there were 140 horses, 5,000 sheep, and 11,100 cattle. II. A N. county of Illinois, traversed by the Illinois river and its affluents, the Fox and Vermilion ; area, 1,050 sq. m. ; pop. in 1870, 60,792. It has an undulating surface, occupied chiefly by prai- ries, but in some places well timbered, and abounds in coal mines. It is traversed by the Illinois Central and several other railroads. The chief productions in 1870 were 273,374 bushels of wheat, 48,308 of rye, 3,077,028 of Indian corn, 1,509,642 of oats, 86,635 of bar- ley, 325,953 of potatoes, 66,803 Ibs. of wool, 1,240,386 of butter, 151,055 of cheese, and 97,- 273 tons of hay. There were 24,673 horses, 17,605 milch cows, 29,338 other cattle, 17,200 sheep, and 36,717 swine ; 8 manufactories of agricultural implements, 7 of brick, 27 of car- riages, 1 of dressed flax, 1 of window glass, 5 of iron castings, 3 of machinery, 1 of organs, 1 of linseed oil, 14 of saddlery and harness, 4 of