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echo sounder

(Encyclopedia)echo sounder, an older instrumentation system for indirectly determining ocean floor depth. Echo sounding is based on the principle that water is an excellent medium for the transmission of sound wave...

Phoenix Islands

(Encyclopedia)Phoenix Islands, group of eight islands, 11 sq mi (28 sq km), central Pacific, N of Samoa. The chain comprises a portion of Kiribati. The two most important are Kanton (or Abariringa) and Enderbury Is...

Ladislaus IV

(Encyclopedia)Ladislaus IV, 1262–90, king of Hungary (1272–90), son and successor of Stephen V. Ladislaus became unpopular by favoring the Cumans, from whom he was descended through his mother. During his reign...

Curtis, Benjamin Robbins

(Encyclopedia)Curtis, Benjamin Robbins, 1809–74, American jurist, associate justice of the U.S. Supreme Court (1851–57), b. Watertown, Mass. After studying law at Harvard, he practiced at Northfield, Mass., and...

Porteous, John

(Encyclopedia)Porteous, John pôrˈtēəs [key], d. 1736, British soldier. He was captain of the Edinburgh town guard at the execution (1736) of Andrew Wilson, a smuggler. When the crowd, which was sympathetic to W...

Orr, James Lawrence

(Encyclopedia)Orr, James Lawrence, 1822–73, American politician, b. Craytonville, S.C. He served in the South Carolina legislature (1844–48) and in the U.S. House of Representatives (1849–59), where he was (1...

Browning, Orville Hickman

(Encyclopedia)Browning, Orville Hickman, 1806–81, U.S. Secretary of the Interior (1866–69), b. Harrison co., Ky. One of the organizers of the Republican party in Illinois, Browning helped secure his friend Linc...

Roelas, Juan de las

(Encyclopedia)Roelas or Ruelas, Juan de las hwän dā läs rōāˈläs, ro͞oāˈläs [key], c.1558–1625, Spanish painter of the school of Seville. He is sometimes called the Spanish Tintoretto; there are stylist...

Pakenham, Sir Edward Michael

(Encyclopedia)Pakenham, Sir Edward Michael păkˈənəm [key], 1778–1815, British general. He entered the army in 1794 and served in the wars against Napoleon I, emperor of France. He distinguished himself in the...

Wood, Anthony

(Encyclopedia)Wood or à Wood, Anthony, 1632–95, English antiquary. His painstaking researches into the history of Oxford resulted in two great works, The History and Antiquities of the University of Oxford (in L...