COLURE 81 COMA BERANICES COLURE, one of the two imaginary COLVIN, SIR SIDNEY, an Enj^lish great circles of the celestial sphere in- critic; born in Norwood, England, June tersecting the poles of the world; one 18, 1845. He became professor of fine passing through the equinoctial points of arts at Cambridge in 1873. He was keeper of prints and drawings, British Museum (1884-1912). He wrote "Life of Landor" (1881) ; "Keats" (1887) ; "Early History of English Engraving" (1905) ; and edited Edinburgh edition of Steven- son's works; "John Keats, His Life and Poetry" (1917). He was knighted in 1911. COLVOCORESSES, GEORGE PAR- TRIDGE, an American naval officer, born in Norwich, Vt., in 1847. He graduated from the United States Naval Academy in 1869. Prior to that time he had served in the navy in the Civil War. He was commissioned ensign in 1870 and rose through the various grades, becoming captain in 1905. He was retired at his own request as rear-admiral in 1907, after 45 years of service. He was advanced five numbers in grade for conspicuous sei'vice at the battle of Manila Bay. He filled nearly every capacity in the naval service, both on shore and at sea. COLZA, a variety of cabbage. Oil is extracted from the seeds and sometimes burned in lamps. _ COMA, a morbid state which, if con- sidered a distinct disease, is a milder form of apoplexy, but which may be properly regarded as a symptom rather than an idiopathic affection. It is characterized by a morbid condition of the brain, pro- ducing loss of sensation and voluntary motion, so that the patient seems as if in a deep sleep. It constitutes the most pronounced state of torpor which can oc- cur. The cerebral functions are suspend- ed in coma, and the nervous and sangui- niferous systems deranged. There are two well-marked types of it, one in which the pulse is oppressed, irregular, and slow; and the other in which it is strong, with a hot skin and other marks of fe- brile inflammation. When coma is in- tense it passes into apoplexy. COMA BERENICES ("the Hair of Berenice"), a northern constellation whose origin is sometimes wrongly stated. In his introduction to "Ptolemy's Cata- logue" Baily says that though it was a well-known constellation long before Ptol- emy's time the latter did not introduce it into the Almagest as a distinct con- stellation, but called it Plokamos (Gr., "hair," or "curls"). It appears to have been restored as a distinct constellation by Tycho Brahe in his catalogue, pub- lished after his death, in 1602. It is made up of rather faint stars, none of them brighter than the fourth magnitude. The constellation is surrounded by Ursa Ma- lONIC COLUMN Aries and Libra and the pole of the equa- tor; and the other through the solstitial points of Cancer and Capricorn, and the poles both of the ecliptic and equator. For this reason the first is called the equinoctial, and the second the solstitial Colure. The name is supposed to have been given to them because a portion of these circles is always concealed from View under the horizon.
