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orange, in botany

(Encyclopedia)orange, name for a tree of the family Rutaceae (rue, or orange, family), native to China and Indochina, and for its fruit, the most important fresh fruit of international commerce. Its physical charac...

transcontinental railroad

(Encyclopedia)transcontinental railroad, in U.S. history, rail connection with the Pacific coast. In 1845, Asa Whitney presented to Congress a plan for the federal government to subsidize the building of a railroad...

Diodorus Siculus

(Encyclopedia)Diodorus Siculus dīədôrˈəs sĭkˈyo͞oləs [key], d. after 21 b.c., Sicilian historian. He wrote, in Greek, a world history in 40 books, ending with Caesar's Gallic Wars. Fully preserved are Book...

Webb, Walter Prescott

(Encyclopedia)Webb, Walter Prescott, 1888–1963, U.S. historian, b. Panola co., Tex. He joined the faculty of the history department at the Univ. of Texas in 1918, received his Ph.D. in 1932, and became full profe...

Morison, Samuel Eliot

(Encyclopedia)Morison, Samuel Eliot, 1887–1976, American historian, b. Boston. He received his Ph.D. from Harvard in 1912 and began teaching history there in 1915, becoming full professor in 1925 and Jonathan Tru...

mother-of-pearl

(Encyclopedia)mother-of-pearl or nacre nāˈkər [key], the iridescent substance that forms the lining of the shells of some fresh-water and some salt-water mollusks. Like the pearl it is a secretion of the mantle,...

Lewis, Gilbert Newton

(Encyclopedia)Lewis, Gilbert Newton, 1875–1946, American chemist, b. Weymouth, Mass., grad. Harvard (B.A., 1896; Ph.D., 1899). He taught at Harvard and at the Massachusetts Institute of Technology (1907–12) and...

Lawrence, Ernest Orlando

(Encyclopedia)Lawrence, Ernest Orlando, 1901–58, American physicist, b. Canton, S. Dak., grad. Univ. of South Dakota, 1922, Ph.D. Yale, 1925. Affiliated with the Univ. of California from 1928 onward, he became a ...

Lee, Yuan Tseh

(Encyclopedia)Lee, Yuan Tseh yo͞o-änˈ dzûˈ lēˈ [key], 1936–, Taiwanese-American chemist, Ph.D. Univ. of California at Berkeley, 1965. In 1986, Lee shared the Nobel Prize in Chemistry with Dudley R. Herschb...

Keeling, Charles David

(Encyclopedia)Keeling, Charles David, 1928–2005, U.S. geochemist, b. Scranton, Pa., Ph.D. Northwestern Univ., 1954. As a postdoctoral fellow at the California Institute of Technology (1953–56), he developed a s...
 

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