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drift

(Encyclopedia)drift, deposit of mixed clay, gravel, sand, and boulders transported and laid down by glaciers. Stratified, or glaciofluvial, drift is carried by waters flowing from the melting ice of a glacier. The ...

air mass

(Encyclopedia)air mass, large body of air within the earth's atmosphere in which temperature and humidity, although varying at different heights, remain similar throughout the body at any one height. Air masses for...

Letcher, John

(Encyclopedia)Letcher, John, 1813–84, American politician, b. Lexington, Va. He studied law and practiced at Lexington, where he also edited the Jacksonian Democrat Valley Star. In Congress (1851–59), he was kn...

Maclay, William

(Encyclopedia)Maclay, William məklāˈ [key], 1734–1804, U.S. Senator from Pennsylvania (1789–91), b. Chester co., Pa. A lawyer and a provincial and state official before serving as Senator, he kept a journal,...

Concert of Europe

(Encyclopedia)Concert of Europe, term used in the 19th cent. to designate a loose agreement by the major European powers to act together on European questions of common interest. The concert emerged after the Congr...

Cummings, Homer Stillé

(Encyclopedia)Cummings, Homer Stillé, 1870–1956, American lawyer, U.S. Attorney General (1933–39), b. Chicago. He practiced law in Stamford, Conn., where he was mayor three times. He served as chairman of the ...

Green, Samuel Swett

(Encyclopedia)Green, Samuel Swett, 1837–1918, American librarian, b. Worcester, Mass. Green was librarian of the Worcester, Mass., Free Public Library (1871–1909) and was a member of the Free Public Library Com...

Tucumán

(Encyclopedia)Tucumán, city (1991 pop. 578,579), capital of Tucumán prov., NW Argentina. It is the commercial center of an area that produces sugar, legumes, lemons, and tobacco. The city was founded in 1565 and ...

politburo

(Encyclopedia)politburo, the former central policy-making and governing body of the Communist party of the Soviet Union and, with minor variations, of other Communist parties. It was first created on the eve of the...

Hill, Benjamin Harvey

(Encyclopedia)Hill, Benjamin Harvey, 1823–82, American statesman, b. Jasper co., Ga. A highly successful lawyer and Whig politician, he supported the Whig-Democratic alliance that carried Georgia in favor of the ...