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John D. and Catherine T. MacArthur Foundation

(Encyclopedia)John D. and Catherine T. MacArthur Foundation, philanthropic institution founded 1978 by John D. MacArthur (1897–1978), owner of a prominent insurance company and other businesses, and his wife Cath...

Saint John, river, United States and Canada

(Encyclopedia)Saint John, river, 418 mi (673 km) long, rising in N Maine and flowing NE to New Brunswick, Canada, then SE below Edmundston, past St. Leonard, Grand Falls, Woodstock, and Fredericton to the Bay of Fu...

John II, king of Portugal

(Encyclopedia)John II (John the Perfect), 1455–95, king of Portugal (1481–95), son and successor of Alfonso V. He was an astute politician and statesman and a patron of Renaissance art and learning. He reduced ...

Dobzhansky, Theodosius

(Encyclopedia)Dobzhansky, Theodosius dôbzhänˈskē [key], 1900–1975, American geneticist, b. Russia, grad. Univ. of Kiev, 1921. He emigrated to the United States in 1927 and was naturalized in 1937. Dobzhansky ...

John II, Spanish king of Castile and León

(Encyclopedia)John II, 1405–54, Spanish king of Castile and León (1406–54), son and successor of Henry III. He was little interested in government, which he entrusted to his favorite Alvaro de Luna. Literature...

Loeb, Jacques

(Encyclopedia)Loeb, Jacques lōb [key], 1859–1924, American physiologist, b. Germany, M.D. Univ. of Strasbourg, 1884. He came to the United States in 1891 and taught at Bryn Mawr, the Univ. of Chicago, and the Un...

Brown, John Carter

(Encyclopedia)Brown, John Carter, 1797–1874, American book collector and philanthropist, b. Providence, R.I.; son of Nicholas Brown. In about 1840 he began collecting books printed before 1800 relating to America...

Carlos, second son of Charles IV of Spain

(Encyclopedia)Carlos (Carlos María Isidro de Borbón), 1788–1855, second son of Charles IV of Spain. He was the first Carlist pretender. After his father's abdication (1808) he was, with the rest of his family, ...

John III, Byzantine emperor of Nicaea

(Encyclopedia)John III (John Ducas Vatatzes) do͝oˈkəs vətătˈzēz [key], d. 1254, Byzantine emperor of Nicaea (1222–54), successor and son-in-law of Theodore I. He extended his territory in Asia Minor and th...

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