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Tyler, John

(Encyclopedia)Tyler, John, 1790–1862, 10th President of the United States, b. Charles City co., Va. Tyler, nominated by a small Democratic faction, had withdrawn from the 1844 election. In Feb., 1861, he pres...

Taney, Roger Brooke

(Encyclopedia)Taney, Roger Brooke tôˈnē [key], 1777–1864, American jurist, 5th chief justice of the United States (1836–64), b. Calvert co., Md., grad. Dickinson College, 1795. The Senate, incensed by Tan...

Burr, Aaron

(Encyclopedia)Burr, Aaron, 1756–1836, American political leader, b. Newark, N.J., grad. College of New Jersey (now Princeton). Soon after Hamilton's death, Burr left Washington on a journey to New Orleans, at t...

Judaism

(Encyclopedia)Judaism jo͞oˈdəĭzˌəm, jo͞oˈdē– [key], the religious beliefs and practices and the way of life of the Jews. The term itself was first used by Hellenized Jews to describe their religious prac...

river

(Encyclopedia)river, stream of water larger than a brook or creek. Land surfaces are never perfectly flat, and as a result the runoff after precipitation tends to flow downward by the shortest and steepest course i...

platinum

(Encyclopedia)platinum plătˈənəm [key], metallic chemical element; symbol Pt; at. no. 78; at. wt. 195.084; m.p. 1,772℃; b.p. 3,827±100℃; sp. gr. 21.45 at 20℃; valence +2 or +4. Pure platinum is a malleab...

metric system

(Encyclopedia)CE5 metric system, system of weights and measures planned in France and adopted there in 1799; it has since been adopted by most of the technologically developed countries of the world. It is based...

musical notation

(Encyclopedia)CE5 Musical notation musical notation, symbols used to make a written record of musical sounds. Two different systems of letters were used to write down the instrumental and the vocal music of anc...

Tennessee Valley Authority

(Encyclopedia)Tennessee Valley Authority (TVA), independent U.S. government corporate agency, created in 1933 by act of Congress; it is responsible for the integrated development of the Tennessee River basin. The h...

Vatican Council, First

(Encyclopedia)Vatican Council, First, 1869–70, the 20th ecumenical council of the Roman Catholic Church (see council, ecumenical), renowned chiefly for its enunciation of the doctrine of papal infallibility. Tw...