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ultramarine

(Encyclopedia)ultramarine, blue pigment used chiefly as a coloring material and as a bluing agent. A double silicate of sodium and aluminum with some sulfur, it is prepared commercially from kaolin, sulfur, soda as...

swallow

(Encyclopedia)swallow, common name for small perching birds of almost worldwide distribution. There are about 100 species of swallows, including the martins, which belong to the same family. Swallows have long, nar...

bead test

(Encyclopedia)bead test, test used in the identification of certain metals. Some metallic ions that cannot be identified by a flame test are identified by a bead test. The test can also be used to confirm the resul...

Nile

(Encyclopedia)Nile, longest river in the world, c.4,160 mi (6,695 km) long from its remotest headstream, the Luvironza River in Burundi, central Africa, to its delta on the Mediterranean Sea, NE Egypt. The Nile flo...

Cadman, Charles Wakefield

(Encyclopedia)Cadman, Charles Wakefield, 1881–1946, American composer, b. Johnstown, Pa. Although he is known to the public principally for two songs—From the Land of the Sky-blue Water, based on Native America...

Statesville

(Encyclopedia)Statesville, city (1990 pop. 17,567), seat of Iredell co., W central N.C., on a plateau in the Blue Ridge foothills; founded 1789, inc. 1847. It is a commercial and industrial center in an agricultura...

Roanoke, river, United States

(Encyclopedia)Roanoke, river, c.410 mi (660 km) long, rising in SW Va. and flowing generally southeast across the Blue Ridge Mts. and into Albemarle Sound, NE N.C. The lower river is navigable for small craft. A co...

New River

(Encyclopedia)New River, c.320 mi (510 km) long, rising in the Blue Ridge, NW N.C. It flows NE through SW Virginia, then NW into West Virginia where it joins with the Gauley River to form the Kanawha River. It is u...

Nevin, Ethelbert Woodbridge

(Encyclopedia)Nevin, Ethelbert Woodbridge, 1862–1901, American pianist and composer, b. Edgeworth, Pa., studied in Boston and in Germany. He made his debut as a pianist in Pittsburgh in 1886 but devoted most of h...

paradise fish

(Encyclopedia)paradise fish, brilliantly colored freshwater Asian fish, Macropodus opercularis, often kept in aquariums. The males reach a length of 3 in. (7.6 cm) and turn reddish with blue bars during mating seas...