Columbia Encyclopedia

(Encyclopedia) Dalton, John dôlˈtən [key], 1766–1844, English scientist. He revived the atomic theory (see atom), which he formulated in the first volume of his New System of Chemical Philosophy (2 vol., 1808�...

(Encyclopedia) Dandie Dinmont terrier dănˈdē dĭnˈmŏnt [key], breed of hardy, long-bodied terrier developed in England and Scotland and first recorded as a distinct type in the very early 18th cent. It stands f...

(Encyclopedia) blue baby, infant born with a congenital heart defect that causes a bluish coloration of the skin as a result of cyanosis (deoxygenated blood). The color is most noticeable around the lips and at the ...

(Encyclopedia) butoh [Jap.,=dance of darkness], avant-garde dance form developed in post–World War II Japan. First performed in 1959 by the dancers Tatsumi Hijikata (1928–86) and Kazuo Ohno (1906–2010), butoh ...

(Encyclopedia) cape buffalo, species of short-haired African ungulate, or hoofed mammal, Syncerus caffer. The cape, or African, buffalo may reach 7 ft (2.1 m) in length, weigh more than 1,500 lb (670 kg), and reach ...

(Encyclopedia) indigo [Span.; from Lat.,=Indian], important blue dyestuff used in printing inks and for vat dyeing of cotton (see dye). It was anciently produced in India and was known in Egypt, probably c.1600 b.c....

(Encyclopedia) copperhead, poisonous snake, Ancistrodon contortrix, of the E United States. Like its close relative, the water moccasin, the copperhead is a member of the pit viper family and detects its warm-bloode...

(Encyclopedia) Jack Russell terrier, breed of dog developed in the 19th cent. by an English clergyman, the Rev. John (Parson Jack) Russell, 1795–1883, for hunting. The Jack Russell resembles the fox terrier and, l...

(Encyclopedia) harrier, breed of medium-sized hound whose origin is obscure but whose existence in England dates from the 13th cent. It stands from 19 to 21 in. (48.3–53.3 cm) high at the shoulder and weighs from ...

(Encyclopedia) Helmholtz, Hermann Ludwig Ferdinand von hĕrˈmän lo͞otˈvĭkh fĕrˈdēnänt fən hĕlmˈhôlts [key], 1821–94, German scientist. Although known especially as a physicist and biologist, he was al...