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superphosphate

(Encyclopedia)superphosphate or superphosphate of lime, Ca(H2PO4)2, is a compound produced by treating rock phosphate with sulfuric acid or phosphoric acid, or a mixture of the two. It is the principal carrier of p...

Dixon

(Encyclopedia)Dixon, city (2020 pop. 15,274), seat of Lee co., N Ill., on the Rock River; founded 1830, inc. 1857. Corn and soybeans are grown, cattle are raised, and...

Dambulla

(Encyclopedia)Dambulla dämbo͝olˈə [key], town, central Sri Lanka. A place of Buddhist pilgrimage, it has a well-preserved cave temple complex at Dambulla Rock that dates to the 1st cent. b.c. There is a recumbe...

Canadian Shield

(Encyclopedia)Canadian Shield or Laurentian Plateau lôrĕnˈchən [key], U-shaped region of ancient rock, the nucleus of North America, stretching N from the Great Lakes to the Arctic Ocean. Covering more than hal...

hyrax

(Encyclopedia)hyrax hīˈrăks [key], name for rabbit-sized mammals of Africa and SW Asia comprising the family Procavidae. Although rodentlike in appearance, hyraxes are hoofed mammals, or ungulates (see Chordata)...

Page, Thomas Nelson

(Encyclopedia)Page, Thomas Nelson, 1853–1922, American author and diplomat, b. Hanover co., Va. His novels and stories are sentimental idealizations of the Old South. Among his novels are On Newfound River (1891)...

Avery Island

(Encyclopedia)Avery Island, salt dome, 163 ft (50 m) high and 2 mi (3.2 km) in diameter, S La., in an area of sea marshes and swamps. A corporation controlled by the Avery and McIlhenny families owns the island. Ho...

Northwich

(Encyclopedia)Northwich nôrthˈwĭch [key], town (1991 pop. 32,664), Cheshire West and Chester, W central England, at the confluence of the Weaver and Dane rivers. Northwich was once the center of England's salt p...

Jim Crow laws

(Encyclopedia)Jim Crow laws, in U.S. history, statutes enacted by Southern states and municipalities, beginning in the 1880s, that legalized segregation between blacks and whites. The name is believed to be derived...

Eastman, George

(Encyclopedia)Eastman, George, 1854–1932, American inventor, industrialist, and philanthropist, b. Waterville, N.Y. By mass production of his photographic inventions, Eastman enormously stimulated the development...