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Black Hills

(Encyclopedia)Black Hills, rugged mountains, c.6,000 sq mi (15,540 sq km), enclosed by the Belle Fourche and Cheyenne rivers, SW S.Dak. and NE Wyo., and rising c.2,500 ft (760 m) above the surrounding Great Plains;...

Mabinogion

(Encyclopedia)Mabinogion măbĭnōˈgēən [key], title given to a collection of medieval Welsh stories. Scholars differ as to the meaning of the word mabinogion: some think it to be the plural of the Welsh word ma...

tin

(Encyclopedia)tin, metallic chemical element; symbol Sn [Lat. stannum]; at. no. 50; at. wt. 118.710; m.p. 231.9681℃; b.p. 2,270℃; sp. gr. 5.75 (gray), 7.3 (white); valence +2 or +4. Tin exhibits allotropy; abov...

Ku Klux Klan

(Encyclopedia)Ku Klux Klan ko͞oˌ klŭks klăn [key], designation mainly given to two distinct secret societies that played a part in American history, although other less important groups have also used the name....

Hawkwood, Sir John de

(Encyclopedia)Hawkwood, Sir John de, d. 1394, English soldier. He fought in the French wars of Edward III and was knighted, although it is not known when or where. With his “white company” of mercenaries, he en...

anglesite

(Encyclopedia)anglesite ăngˈgləsīt [key], pale green, blue, yellow-to-white, or colorless mineral, a sulfate of lead, PbSO4, that is formed by oxidation of galena, crystallizing in the orthorhombic system and o...

Dvina, river, Russia

(Encyclopedia)Dvina dvēnäˈ [key] or Northern Dvina, Rus. Severnaya Dvina, river, c.465 mi (750 km) long, N European Russia. It is formed near Veliki Ustyug by the union of the Sukhona and Yug rivers, flows N pas...

delftware

(Encyclopedia)delftware. The earliest delftware was a faience, a heavy, brown earthenware with opaque white glaze and polychrome decoration, made in the late 16th cent. Some of the earliest imitations of Chinese an...

Cole, Timothy

(Encyclopedia)Cole, Timothy, 1852–1931, American wood engraver, b. London. He came to the United States as a child. Cole learned his trade in Chicago and later moved to New York, where in 1873 he began his 40-yea...

Chase, Mary Ellen

(Encyclopedia)Chase, Mary Ellen, 1887–1973, American educator and writer, b. Blue Hill, Maine, grad. Univ. of Maine, 1909. Her works, set in Maine and excellent in their regional fidelity, include a biography and...