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phosgene

(Encyclopedia)phosgene fŏsˈjēn [key], colorless poison gas, first used during World War I by the Germans (1915). When dispersed in air, the gas has the odor of new-mowed hay. The gas is highly toxic; when inhale...

Certosa di Pavia

(Encyclopedia)Certosa di Pavia chārtôˈzä dē pävēˈä [key], former Carthusian abbey of Pavia. One of the most magnificent of all monastic structures, it has been maintained as a national monument since 1866....

White River

(Encyclopedia)White River. 1 River, c.690 mi (1,110 km) long, rising in the Boston Mts., NW Ark., and flowing first N into SW Missouri, then generally SE through NE Arkansas to the Mississippi River. Its chief trib...

Warm Springs

(Encyclopedia)Warm Springs, resort, Meriwether co., W Ga. The salutary properties of the water springing from Pine Mt. were known to Native Americans, and white settlers learned of them in the late 18th cent. By th...

Weaver, Earl Sidney

(Encyclopedia)Weaver, Earl Sidney, 1930–, American baseball manager, b. St. Louis. The pint-sized (5 ft 7 in.) scrapper began his baseball career in 1948 and until 1957 played second base in the minors. He became...

Webster, John

(Encyclopedia)Webster, John, 1580?–1634, English dramatist, b. London. Although little is known of his life, there is evidence that he worked for Philip Henslowe, collaborating with such playwrights as Dekker and...

behavior therapy

(Encyclopedia)behavior therapy or behavior modification, in psychology, treatment of human behavioral disorders through the reinforcement of acceptable behavior and suppression of undesirable behavior. The techniqu...

Thomas à Kempis

(Encyclopedia)Thomas à Kempis kĕmˈpĭs [key], b. 1379 or 1380, d. 1471, German monk, traditional author of The Imitation of Christ, b. Kempen, Germany. He was schooled at Deventer, in the Netherlands, the center...

Black Kettle

(Encyclopedia)Black Kettle, d. 1868, chief of the southern Cheyenne in Colorado. His attempt to make peace (1864) with the white men ended in the massacre of about half his people at Sand Creek. Despite this treach...

Sennett, Mack

(Encyclopedia)Sennett, Mack sĕnˈĭt [key], 1884–1960, American movie director and producer, b. Danville, Que. In 1909 he began working for D. W. Griffith at the Biograph Company, and in 1912 he organized his ow...