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Barrow, Sir John

(Encyclopedia)Barrow, Sir John, 1764–1848, British geographer, promoter of arctic exploration. His early travels as secretary to Earl Macartney (who was ambassador to China and governor of the Cape of Good Hope c...

Simpson, George Gaylord

(Encyclopedia)Simpson, George Gaylord, 1902–84, American paleontologist and zoologist, b. Chicago, Ph.D. Yale, 1926. He became assistant curator of vertebrate paleontology at the American Museum of Natural Histor...

Hartigan, Grace

(Encyclopedia)Hartigan, Grace, 1922–2008, American painter, b. Newark, N.J. Hartigan moved to Manhattan in 1945 and began painting semiabstract canvases after her introduction to the works of the abstract express...

Gratz, Barnard

(Encyclopedia)Gratz, Barnard grăts [key], 1738–1801, American merchant, b. Langensdorf, Upper Silesia. Having worked in his cousin's countinghouse in London, Gratz emigrated (1754) to Philadelphia, where he beca...

McHenry, James

(Encyclopedia)McHenry, James, 1753–1816, American political leader, b. Ireland. He emigrated to Philadelphia in 1771 and, after studying medicine under Benjamin Rush, served as a surgeon in the Continental Army i...

Booth, Junius Brutus

(Encyclopedia)Booth, Junius Brutus, 1796–1852, Anglo-American actor. After experience in the provinces, he appeared at Covent Garden. In 1817, with his portrayal of Richard III, he established himself as a rival ...

Brin, Sergey Mikhaylovich

(Encyclopedia)Brin, Sergey Mikhaylovich, 1973–, American business executive and computer scientist, b. Moscow, grad. Univ. of Maryland (B.S., 1993) and Stanford (M.S., 1995). His family immigrated to the United S...

Eratosthenes

(Encyclopedia)Eratosthenes ĕrətŏsˈthənēz [key], c.275–c.195 b.c., Greek scholar, b. Cyrene. A pupil of Callimachus in Athens, he became (c.240 b.c.) head of the library at Alexandria. Known for his versatil...

Reclus, Jean Jacques Élisée

(Encyclopedia)Reclus, Jean Jacques Élisée zhäN zhäk ālēzāˈ rəklüˈ [key], 1830–1905, French geographer, b. Gironde, educated mainly in Germany, where he studied under Karl Ritter. Several times he was f...

Al-Biruni, Abu Rayhan Muhammad ibn Ahmad

(Encyclopedia)Al-Biruni or Al Beruni, Abu Rayhan Muhammad ibn Ahmad äbo͞oˈ rīhänˈ məhămˈĭd ĭbˈən äˈməd ăl-bēro͞oˈnē, ăl bĕro͞oˈnē [key], b. 973, d. after 1050, Central Asian scientist. His...