MAURY, MATTHEW FONTAINE, American hydrographer, born in Virginia; entered the United States navy in 1825, became lieutenant in 1837, studied the Gulf Stream, oceanic currents, and great circle sailing, and in 1856 published his “Physical Geography of the Sea”; took the side of the Confederates in the Civil War, and was afterwards appointed professor in the Military College at Lexington, in Virginia (1806-1873).

MAUSOLE`UM, a building more or less elaborate, used as a tomb.  See MAUSOLUS.

MAUSOLUS, a king of Caria, husband of Artemisia, who in 353 raised a monument to his memory, called the Mausoleum, and reckoned one of the Seven Wonders of the world.

MAX MUeLLER, FRIEDRICH, philologist, born at Dessau, son of a German poet, Wilhelm Mueller; educated at Leipzig; studied at Paris, and came to England in 1846; was appointed Taylorian Professor at Oxford in 1854, and in 1868 professor of Comparative Philology there, a science to which he has made large contributions; besides editing the “Rig-Veda,” he has published “Lectures on the Science of Language” and “Chips from a German Workshop,” dealing therein not merely with the origin of languages, but that of the early religious and social systems of the East; b. 1823.

MAXIM, HIRAM S., American inventor, born at Tangerville, Maine, U.S.; showed early a decided mechanical talent, and is best known in connection with the invention of the gun named after him, but among his other inventions are the smokeless powder, the incandescent lamp carbons, and search-lights; B. 1840.

MAXIM GUN, an automatic machine-gun invented by Hiram S. Maxim, an American, in 1884, capable of discharging 620 rifle cartridges per minute; the first shot is fired by hand, and the recoil is utilised to reload and fire the next, and so on.  A cylinder of water keeps the barrel from heating.

MAXIMILIAN, FERDINAND JOSEPH, archduke of Austria, younger brother of Francis Joseph, born at Schoenbrunn; became emperor of Mexico; issued an edict threatening death to any Mexican who took up arms against the empire, roused the Liberal party against him, and was at the head of 8000 men defeated at Queretaro, taken prisoner, tried by court-martial, and shot (1832-1867).

MAXIMILIAN I., emperor of Germany, son of Frederick III., acquired Burgundy and Flanders by marriage, which involved him in a war with France; became emperor on the death of his father in 1493; became by marriage Duke of Milan, and brought Spain under the power of his dynasty by the marriage of his son Philip to the daughter of Ferdinand and Isabella; it was he who assembled the Diet of Augsburg at which Luther made appeal to the Pope (1459-1519).

MAXWELL, JAMES CLERK, eminent physicist, born in Edinburgh, son of John Clerk Maxwell of Middlebie; attained the rank of senior wrangler at Cambridge; became professor in Aberdeen in 1856, in London in 1860, and of Experimental Physics in Cambridge in 1871; in this year appeared the first of his works, “The Theory of Heat,” which was followed by “Electricity and Magnetism” and “Matter and Motion,” the second being his greatest; he was as sincere a Christian as he was a zealous scientist (1831-1879).