COLVIN, SIDNEY, Fellow of Trinity College, Cambridge, Slade Professor of Art at Cambridge, born at Norwood; contributor to the journals on art and literature; has written Lives of Keats and Landor; friend of Robert Louis Stevenson, and his literary executor; b. 1845.

COMACCHIO (10), a walled town, 30 m.  SE. of Ferrara; famous for fish, specially eel-culture in a large lagoon adjoining, 90 in. in circumference.

COMBE, ANDREW, M.D., a physician and physiologist, born in Edinburgh; studied under Spurzheim in Edinburgh and Paris, but on his return to his native city was seized with pulmonary consumption, which rendered him a confirmed invalid, so that he had to spend his winters abroad; was eminent as a physician; was a believer in phrenology; produced three excellent popular works on Physiology, Digestion, and the Management of Infancy (1797-1847).

COMBE, GEORGE, brother of the preceding, born in Edinburgh; trained to the legal profession; like his brother, he became, under Spurzheim, a stanch phrenologist and advocate of phrenology; but his ablest and best-known work was “The Constitution of Man,” to the advocacy of the principles of which and their application, especially to education, he devoted his life; he married a daughter of the celebrated Mrs. Siddons (1788-1858).

COMBE, WILLIAM, born in Bristol; author of the “Three Tours of Dr. Syntax”; inherited a small fortune, which he squandered by an irregular life; wrote some 86 works (1741-1823).

COMBERMERE, VISCOUNT, a British field-marshal, born in Denbighshire; served in Flanders, at the Cape of Good Hope, and in India; was present at the siege of Seringapatam; was sent to Spain in 1808; distinguished himself in the Peninsula, and particularly at Talavera; received a peerage in 1827; was made commander-in-chief in India, and Constable of the Tower in succession to Wellington in 1832 (1773-1865).

COMENIUS, JOHN AMOS, a Moravian educational reformer, particularly as regards the acquisition of languages in their connection with the things they denote; his two most famous books are his “Janua Linguarum” and his “Orbis Sensualium Pictus”; his principle at bottom was, words must answer to and be associated with things and ideas of things, a principle still only very partially adopted in education, and that only at the most elementary stages.

COMET, a member of the solar system under control of the sun, consisting of a bright nucleus within a nebulous envelope, generally extended into a tail on the rear of its orbit, which is extremely eccentric, pursuing its course with a velocity which increases as it approaches the sun, and which diminishes as it withdraws from it; these bodies are very numerous, have their respective periods of revolution, which have been in many cases determined by observation.

COMINES, a French town in the dep. of Nord, France, 15 m.  SW. of Courtrai.

COMINES, PHILIPPE DE, a French chronicler, born at Comines; was of Flemish origin; served under Charles the Bold, then under Louis XI. and Charles VIII.; author of “Memoires,” in seven vols., of the reigns of these two monarchs, which give a clear and faithful picture of the time and the chief actors in it, but with the coolest indifference as to the moral elements at work, with him the end justifying the means, and success the measure of morality (1443-1509).