(Encyclopedia) bariumbariumbârˈēəm [key] [Gr.,=heavy], metallic chemical element; symbol Ba; at. no. 56; at. wt. 137.327; m.p. 725℃; b.p. 1,640℃; sp. gr. 3.5 at 20℃; valence +2. Barium is a soft,…
(Encyclopedia) Dykstra, Clarence AddisonDykstra, Clarence Addisondīkˈstrə [key], 1883–1950, American educator and civic administrator, b. Cleveland, grad. Univ. of Iowa, 1903. After graduate work at…
(Encyclopedia) Crocker, Charles, 1822–88, American railroad builder, b. Troy, N.Y. In 1836 he moved with his family to Marshall co., Ind., where he later set up a small foundry. He joined a party to…
(Encyclopedia) Hearst, GeorgeHearst, Georgehûrst [key], 1820–91, American mining magnate, U.S. senator (1886–91), b. Franklin co., Mo. He went to California in 1850 and became a mining prospector and…
(Encyclopedia) Guadalupe Hidalgo, Treaty of, 1848, peace treaty between the United States and Mexico that ended the Mexican War. Negotiations were carried on for the United States by Nicholas P.…
(Encyclopedia) Ghez, Andrea Mia, 1965–, American astrophysicist, b. New York City, Ph.D. California Institute of Technology, 1992. She has been on the faculty at the Univ. of California, Los Angeles…
(Encyclopedia) Escalante, Silvestre Vélez deEscalante, Silvestre Vélez desēlvāˈstrā vāˈlāth dā āskälänˈtā [key], fl. 1769–79, Spanish explorer in the American Southwest and Far West, a Franciscan…
