Columbia Encyclopedia

Search results

486 results found

rhythm, biological

(Encyclopedia)rhythm, biological, or biorhythm, cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical changes in the env...

Colorado–Big Thompson project

(Encyclopedia)Colorado–Big Thompson project, constructed by the U.S. Bureau of Reclamation to divert water from the headstreams of the Colorado River to irrigate c.720,000 acres (291,400 hectares) of land in NE C...

Fourth of July

(Encyclopedia)Fourth of July, Independence Day, or July Fourth, U.S. holiday, commemorating the adoption of the Declaration of Independence. The Second Continental Congress approved the Declaration on July 4, 1776...

Hunt, Gaillard

(Encyclopedia)Hunt, Gaillard gĭlyärdˈ [key], 1862–1924, American historian and editor, b. New Orleans. He served (1887–1909, 1917–24) the Dept. of State in various capacities, his most important work being...

Ford, Worthington Chauncey

(Encyclopedia)Ford, Worthington Chauncey, 1858–1941, American historian and editor, b. Brooklyn, N.Y. He was joint editor, with his brother Paul Leicester Ford, of Winnowings in American History (15 vol., 1890–...

Milan Decree

(Encyclopedia)Milan Decree, issued Dec., 1807, by Napoleon I of France in an attempt to enforce the Continental System. Designed to strengthen the Berlin Decree, it authorized French warships and privateers to capt...

Warren, Joseph

(Encyclopedia)Warren, Joseph, 1741–75, political leader in the American Revolution, b. Roxbury, Mass. A Boston physician, he participated in the agitation against the Stamp Act (1765). He became a member of the B...

Bowdoin, James

(Encyclopedia)Bowdoin, James bōˈdən [key], 1726–90, American political leader, b. Boston. He was elected to the Massachusetts General Court in 1753 and served until 1774. Illness prevented him (1774) from taki...

Bremerhaven

(Encyclopedia)Bremerhaven brāˈmərhäˌfən [key], city, in the state of Bremen, NW Germany, at the mouth of the Weser ...

Thomson, Charles

(Encyclopedia)Thomson, Charles, 1729–1824, political leader in the American Revolution, b. Co. Londonderry (now Derry), Ireland. Emigrating to America in 1739, he later taught school and became a merchant. His pr...

Browse by Subject