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Grimaldi, Francesco Maria

(Encyclopedia) Grimaldi, Francesco MariaGrimaldi, Francesco Mariafränchāsˈkō märēˈä grēmälˈdē [key], 1618?–1663, Italian physicist and mathematician. A Jesuit and professor at Bologna, he studied in…

April Fool's Day

(Encyclopedia) April Fool's Day or All Fool's Day, holiday of uncertain origin, known for practical joking and celebrated on the first of April. Prior to the adoption of the Gregorian calendar in…

Nollet, Jean Antoine

(Encyclopedia) Nollet, Jean AntoineNollet, Jean AntoinezhäN äNtwänˈ nôlāˈ [key], 1700–1770, French clergyman, experimental physicist, and leading member of the Paris Academy of Science. He…

muslin

(Encyclopedia) muslin, general name for plain woven fine white cottons for domestic use. It is believed that muslins were first made at Mosul (now a city of Iraq). They were widely made in India,…

M'Ba, Léon

(Encyclopedia) M'Ba, LéonM'Ba, LéonlāôNˈ əmbäˈ [key], 1902–67, Gabonese political leader. He was a member of the dominant Fang ethnic group. When Gabon became a self-governing republic in the French…

Concord, river, United States

(Encyclopedia) Concord, river, c.15 mi (24 km) long, NE Mass., a short tributary of the Merrimack, which it joins at Lowell. On Apr. 19, 1775, colonial militia fired some of the first shots of the…

Davis, Benjamin Oliver

(Encyclopedia) Davis, Benjamin Oliver, 1877–1970, American general, b. Washington, D.C. After studying (1897–98) at Howard Univ., Davis served as a lieutenant in the Spanish-American War and in 1899…

Gibson, Randall Lee

(Encyclopedia) Gibson, Randall Lee, 1832–92, Confederate general and U.S. legislator, b. Woodford co., Ky. Gibson served in most of the Western campaigns of the Civil War, first as an artillery…

Fitz, Reginald Heber

(Encyclopedia) Fitz, Reginald Heber, 1843–1913, American pathologist, b. Chelsea, Mass., M.D. Harvard, 1868. He studied under Virchow, and in 1870 he returned to Harvard, where he introduced Virchow'…

Victoria Land

(Encyclopedia) Victoria Land, part of E Antarctica, S of New Zealand; Cape Adare is to the northeast. Bounded on the E by the Ross Sea and on the W by Wilkes Land, it consists of ranges of the…