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Turrell, James

(Encyclopedia) Turrell, James, 1943–, American installation and land artist, b. Los Angeles, grad. Pomona College (B.A., 1965), Claremont Graduate School (M.F.A., 1973). Turrell's career began in the…

mercury poisoning

(Encyclopedia) mercury poisoning, tissue damage resulting from exposure to more than trace amounts of the element mercury or its compounds. Elemental mercury (the silver liquid familiar from…

Stephen II

(Encyclopedia) Stephen II, d. 757, pope (752–57), successor of Pope St. Zacharias. When Rome was threatened by the Lombard king Aistulf, Stephen went to Gaul and appealed to Pepin the Short for help…

silicone

(Encyclopedia) silicone, polymer in which atoms of silicon and oxygen alternate in a chain; various organic radicals, such as the methyl group, CH3, are bound to the silicon atoms. Silicones, which…

Dix, Otto

(Encyclopedia) Dix, Otto, 1891–1969, German painter and draftsman. Dix fought in World War I and returned to Düsseldorf haunted by the horrors he had witnessed. In 1924 he published War, a series of…

Niagara, river, United States and Canada

(Encyclopedia) NiagaraNiagaranīăgˈrə [key], river, 34 mi (55 km) long, issuing from Lake Erie between Buffalo, N.Y., and Fort Erie, Ont., Canada. It flows north around Grand Island and over Niagara…

Mohawk, river, United States

(Encyclopedia) Mohawk, river, c.140 mi (230 km) long, rising in central New York and flowing S then SE past Utica and Schenectady to enter the Hudson River at Cohoes. The Mohawk is canalized from…

Morgenthau, Henry

(Encyclopedia) Morgenthau, HenryMorgenthau, Henrymôrˈgənthô [key], 1856–1946, American banker, diplomat, and philanthropist, b. Germany; father of Henry Morgenthau, Jr. He emigrated to the United…