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cardinal, in zoology

(Encyclopedia)cardinal or redbird, common name for a North American songbird of the family Fringillidae (New World finch family). In the eastern cardinal, Richmondena cardinalis, the male is bright scarlet with bla...

color

(Encyclopedia)color, effect produced on the eye and its associated nerves by light waves of different wavelength or frequency. Light transmitted from an object to the eye stimulates the different color cones of the...

McAdoo, William Gibbs

(Encyclopedia)McAdoo, William Gibbs măkˈədo͞o [key], 1863–1941, American political leader, U.S. secretary of the treasury (1913–18), b. near Marietta, Ga. The son of a prominent Georgia jurist, McAdoo becam...

Riel, Louis

(Encyclopedia)Riel, Louis lwē rēĕlˈ [key], 1844–85, Canadian insurgent, leader of two rebellions, b. Manitoba, of French and Métis parentage. In 1869–70 he led the rebels of the Red River settlements, main...

color blindness

(Encyclopedia)color blindness, visual defect resulting in the inability to distinguish colors. About 8% of men and 0.5% of women experience some difficulty in color perception. Color blindness is usually an inherit...

spleen

(Encyclopedia)spleen, soft, purplish-red organ that lies under the diaphragm on the left side of the abdominal cavity. The spleen acts as a filter against foreign organisms that infect the bloodstream, and also fil...

Geneva, city, United States

(Encyclopedia)Geneva, city (2020 pop. 12,812), Ontario co., W central N.Y., in the Finger Lakes region; inc. as a city 1897. Located in a farm area, Geneva's manufact...

Dobell, Sydney Thompson

(Encyclopedia)Dobell, Sydney Thompson dōbĕlˈ [key], 1824–74, English poet. He is best known for the melodramatic, extravagantly emotional poem Balder (1853). In 1855 he published jointly with Alexander Smith (...

Van Dyck, Cornelius Van Alen

(Encyclopedia)Van Dyck, Cornelius Van Alen, 1818–95, American missionary, b. Kinderhook, N.Y. In 1840 he went to Syria as a medical missionary. In 1846 he was ordained in the Congregational ministry. Besides bein...

Hare, Robert

(Encyclopedia)Hare, Robert, 1781–1858, American chemist, b. Philadelphia. He was professor of chemistry (1819–47) at the medical college of the Univ. of Pennsylvania. Hare made important contributions to early ...