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Sommer, William
(Encyclopedia) Sommer, William, 1867–1949, American painter and lithographer, b. Detroit. He was apprenticed as a lithographer and studied drawing with Julius Melchers in Detroit and drawing and…apatite
(Encyclopedia) apatiteapatiteăpˈətīt [key], mineral, a phosphate of calcium containing chlorine or fluorine, or both, that is transparent to opaque in shades of green, brown, yellow, white, red, and…molybdenite
(Encyclopedia) molybdenitemolybdeniteməlĭbˈdənīt, mō– [key], a mineral, molybdenum disulfide, MoS2, blue-gray in color, with a metallic luster and greasy feel. It occurs in crystals of the hexagonal…Field, Eugene
(Encyclopedia) Field, Eugene, 1850–95, American poet and journalist, b. St. Louis. After working on several Midwestern newspapers, in 1883 he became a columnist for the Chicago Daily News (later the…heartwood
(Encyclopedia) heartwood, the central, woody core of a tree, no longer serving for the conduction of water and dissolved minerals; heartwood is usually denser and darker in color than the outer…Bruce, James
(Encyclopedia) Bruce, James, 1730–94, Scottish explorer in Africa. He explored Roman ruins in N Africa (1755) from Tunis to Tripoli and visited Crete, Rhodes, and Asia Minor. In 1768 he traveled down…bird-of-paradise flower
(Encyclopedia) bird-of-paradise flower, large tropical herb (Strelitzia reginae) of the family Musaceae (banana family), native to S Africa. Its large blue and orange blossom resembles an exotic bird…birthmark
(Encyclopedia) birthmark, pigmented maldevelopment of the skin that varies in size, either present at birth or developing later. Birthmarks may appear as moles (melanocytic nevi) that vary in color…Whiteman, Paul
(Encyclopedia) Whiteman, Paul, 1891–1967, American conductor, b. Denver. Whiteman played viola in the Denver Symphony Orchestra and in 1915 joined the San Francisco Symphony. During World War I he…Beke, Charles Tilstone
(Encyclopedia) Beke, Charles TilstoneBeke, Charles Tilstonebēk [key], 1800–1874, English explorer and author. In Ethiopia in 1840–43 he mapped c.70,000 sq mi (181,300 sq km) of the country,…Trending
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