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Huntington, Collis Potter

(Encyclopedia) Huntington, Collis Potter, 1821–1900, American railroad builder, b. near Torrington, Conn. A storekeeper of Oneonta, N.Y., before he went West in the gold rush of 1849, he became a…

opal

(Encyclopedia) opalopalōˈpəl [key], a mineral consisting of poorly crystalline to amorphous silica, SiO2·nH2O; the water content is quite variable but usually ranges from 3% to 10%. Common opal is…

graphite

(Encyclopedia) graphitegraphitegrăfˈīt [key], an allotropic form of carbon, known also as plumbago and black lead. It is dark gray or black, crystalline (often in the form of slippery scales), greasy…

The Dalles

(Encyclopedia) The DallesThe Dallesdălz [key], city (1990 pop. 11,060), seat of Wasco co., N Oreg., on the Columbia River; inc. 1857. It is a busy inland port; ships passing through the locks at…

Bland, Richard Parks

(Encyclopedia) Bland, Richard Parks, 1835–99, American statesman, b. near Hartford, Ky. He taught in rural schools in Kentucky and Missouri before he went to the gold fields of California in 1855. He…

state flowers

(Encyclopedia) state flowers. Each state of the United States has designated, usually by legislative action, one flower as its floral emblem; the rose has been designated by Congress as the national…

Atlantic City

(Encyclopedia) Atlantic City, city (2020 pop. 39,497), Atlantic co., SE N.J., an Atlantic resort and convention center; settled c.1790, inc. 1854. Situated on Absecon Island, a barrier…

Long Valley

(Encyclopedia) Long Valley, caldera, c.10 by 20 mi (15 by 30 km), Mono co., E Calif., at the eastern edge of the Sierra Nevada. Formed by a catastrophic eruption c.730,000 years ago, Long Valley and…

borax

(Encyclopedia) borax or sodium tetraborate decahydratesodium tetraborate decahydratesōˈdēəm tĕˌtrəbôrˈāt dĕkˌəhīˈdrāt [key], chemical compound, Na2B4O7·10H2O; sp. gr. 1.73; slightly soluble in cold…

batholith

(Encyclopedia) batholith, enormous mass of intrusive igneous rock, that is, rock made of once-molten material that has solidified below the earth's surface (see rock). Batholiths usually are granitic…