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seafloor spreading

(Encyclopedia)CE5 Schematic model of the oceanic crust, showing seafloor spreading seafloor spreading, theory of lithospheric evolution that holds that the ocean floors are spreading outward from vast underwate...

Lansing, John

(Encyclopedia)Lansing, John, 1754–1829?, American political leader and jurist, b. Albany, N.Y. He served as military secretary to Gen. Philip J. Schuyler in the American Revolution and later became a prominent la...

Lee, William

(Encyclopedia)Lee, William, 1739–95, American Revolutionary diplomat, b. Westmoreland co., Va.; brother of Arthur Lee, Francis L. Lee, and Richard H. Lee. He opened a business house in London in 1768 and later wa...

Langdon, John

(Encyclopedia)Langdon, John, 1741–1819, American political leader, b. Portsmouth, N.H. A prosperous merchant, Langdon was active in pre-Revolutionary activities. In 1775 he became a delegate to the Continental Co...

McDougall, Alexander

(Encyclopedia)McDougall, Alexander məkdo͞oˈgəl [key], 1731–86, American Revolutionary political leader and general, b. Islay, Inner Hebrides, Scotland. He was taken (1738) as a child to New York. He became a ...

Mansfield, William Murray, 1st earl of

(Encyclopedia)Mansfield, William Murray, 1st earl of, 1705–93, English jurist. As solicitor general (1742–54) he prosecuted the Scottish rebel lords, Balmerino (Arthur Elphinstone), Kilmarnock, and Lovat. In 17...

Grasse, François Joseph Paul, comte de

(Encyclopedia)Grasse, François Joseph Paul, comte de fräNswäˈ zhôzĕfˈ pōl kôNt də gräs [key], 1722–88, French admiral. In 1781, in command of a French fleet sent to cooperate with the Continental force...

Dyer, Eliphalet

(Encyclopedia)Dyer, Eliphalet əlĭfˈəlĭtˌ [key], 1721–1807, American jurist, b. Windham, Conn. After serving in the state legislature for several years, Dyer took part in the French and Indian Wars and later...

Allentown

(Encyclopedia)Allentown, city (2020 pop. 125,845), seat of Lehigh co., E Pa., on the Lehigh River; inc. as a borough 1811, as a city 1867. The largest city in the agricultural and industrial Lehigh Vall...

Alexander, William

(Encyclopedia)Alexander, William, known as Lord Stirling stûrˈlĭng [key], 1726–83, American Revolutionary general, b. New York City. Although the House of Lords rejected his claim to succeed as the 6th earl of...