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mineral

(Encyclopedia)mineral, inorganic substance occurring in nature, having a characteristic and homogeneous chemical composition, definite physical properties, and, usually, a definite crystalline form. A few of the mi...

Mississippi Scheme

(Encyclopedia)Mississippi Scheme, plan formulated by John Law for the colonization and commercial exploitation of the Mississippi valley and other French colonial areas. In 1717 the French merchant Antoine Crozat t...

Lalique, René

(Encyclopedia)Lalique, René rənāˈ lälēkˈ [key], 1860–1945, French jewelery designer and glassmaker whose works are landmarks of arts nouveau and deco, b. Ay; apprenticed to Parisian goldsmith Louis Aucoq a...

Wilder, Laura Elizabeth Ingalls

(Encyclopedia)Wilder, Laura Elizabeth Ingalls, 1867–1957, American author of the classic Little House series of children's books, b. Pepin, Wis. She and her pioneer family traveled (1869–79) throughout the Midw...

vanadium

(Encyclopedia)vanadium vənāˈdēəm [key], metallic chemical element; symbol V; at. no. 23; at. wt. 50.9415; m.p. about 1,890℃; b.p. 3,380℃; sp. gr. about 6 at 20℃; valence +2, +3, +4, or +5. Vanadium is a ...

Tiahuanaco

(Encyclopedia)Tiahuanaco tyäwänäˈkō [key], ancient native ruin, W Bolivia, 34 mi (55 km) S of Lake Titicaca on the Tiahuanaco R. in the S central Andes, near the Peruvian border; also called Tiwanaku or Tiahua...

urea

(Encyclopedia)CE5 urea yo͝oēˈə [key], organic compound that is the principal end product of nitrogen metabolism in most mammals. Urea was the first animal metabolite to be isolated in crystalline form; its c...

selenium

(Encyclopedia)selenium səlēˈnēəm [key], nonmetallic chemical element; symbol Se; at. no. 34; at. wt. 78.96; m.p. 217℃; b.p. about 685℃; sp. gr. 4.81 at 20℃; valence −2, +4, or +6. Selenium is directly ...

Sherman, John

(Encyclopedia)Sherman, John, 1823–1900, American statesman, b. Lancaster, Ohio; brother of William Tecumseh Sherman. He studied law, was admitted (1844) to the bar, and practiced law several years in Mansfield, O...

Banville, John

(Encyclopedia)Banville, John, 1945–, Irish novelist. His novels, which stress language over plot and narrative, are written in a dense, elaborate, and highly original blend of poetry and prose. They are allusive,...