Columbia Encyclopedia

(Encyclopedia) Brockville, city, SE Ont., Canada, on the St. Lawrence River. It is in a rich dairy region. The city's manufactures include telecommunications equipment...

(Encyclopedia) pathology, study of the cause of disease and the modifications in cellular function and changes in cellular structure produced in any cell, organ, or part of the body by disease. The changes in tissue...

(Encyclopedia) Kensington Runestone, much-disputed stone found (1898) on a farm near Kensington, Minn., SW of Alexandria. Inscribed on the stone in runes is an account of a party of Norse explorers, 14 days' journey...

(Encyclopedia) Heade, Martin Johnson hĕd [key], 1819–1904, American painter, b. Lumberville, Pa. He studied briefly with Edward Hicks and in Europe, and later traveled in Central and South America. Heade is assoc...

(Encyclopedia) Heller, Joseph, 1923–99, American writer, b. Brooklyn, N.Y. Heller is best known for his first novel, Catch-22 (1961). Set in World War II, it is a darkly humorous commentary on the illogic of war a...

(Encyclopedia) Tolkien, J. R. R. (John Ronald Reuel Tolkien) tälˈkēn, tōlˈ– [key], 1892–1973, British novelist, b. South Africa. A fantasy writer and Oxford don, Tolkien wrote The Hobbit (1937), adapted fro...

(Encyclopedia) Revelation or Apocalypse əpŏkˈəlĭps [key], the last book of the New Testament. It was written c.a.d. 95 on Patmos Island off the coast of Asia Minor by an exile named John, in the wake of local p...

(Encyclopedia) technetium tĕknēˈshēəm [key] [Gr. technetos=artificial], artificially produced radioactive chemical element; symbol Tc; at. no. 43; mass no. of most stable isotope 98; m.p. 2,200℃; b.p. 4,877�...

(Encyclopedia)  CE5 North America, third largest continent (2015 est. pop. 571,949,000), c.9,400,000 sq mi (24,346,000 sq km), the northern of the two continents of the Western Hemisphere. North America includes a...

(Encyclopedia) Montmorency, river, c.60 mi (100 km) long, rising in the Laurentian Mts., S Que., Canada, and flowing generally S to the St. Lawrence River. Near its mouth are Montmorency Falls (275 ft/84 m high), pr...