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air, law of the

(Encyclopedia)air, law of the, in the broadest sense, all law connected with the use of the air, including radio and satellite transmissions; more commonly, it refers to laws concerning civil aviation. The developm...

hydrogen

(Encyclopedia)hydrogen hīˈdrəjən [key] [Gr.,=water forming], gaseous chemical element; symbol H; at. no. 1; interval in which at. wt. ranges 1.00784–1.00811; m.p. −259.14℃; b.p. −252.87℃; density 0.08...

Dexter, Timothy

(Encyclopedia)Dexter, Timothy, 1747–1806, American merchant and eccentric, b. Malden, Mass. He gained a fortune from the American Revolution by buying up depreciated certificates of indebtedness that were afterwa...

Derwent Water

(Encyclopedia)Derwent Water, lake, 3 mi (4.8 km) long and 1 mi (1.6 km) wide, Cumbria, NW England, formed by a widening of the River Derwent. It is surrounded by wooded hills, with the Lodore (c.90 ft/27 m) and Bar...

Dana, Francis

(Encyclopedia)Dana, Francis, 1743–1811, American diplomat, b. Charlestown, Mass. Son of a prominent lawyer, he was himself a lawyer. He went as a colonial agent to England, then served as a delegate to the Massac...

Dawes, William

(Encyclopedia)Dawes, William, 1745–99, figure in the American Revolution, b. Boston, Mass. On the night of Apr. 18, 1775, Dawes rode from Boston, via Brighton Bridge, to Lexington, warning the countryside of the ...

Converse, Frederick Shepherd

(Encyclopedia)Converse, Frederick Shepherd kŏnˈvûrs [key], 1871–1940, American composer, b. Newton, Mass., studied with J. K. Paine and G. W. Chadwick and in Germany with Rheinberger. His Pipe of Desire (Bosto...

Clark, William Smith

(Encyclopedia)Clark, William Smith, 1826–86, American educator, b. Ashfield, Mass., grad. Amherst, 1848, and studied chemistry and botany at Göttingen (Ph.D., 1852). He taught at Amherst until the Civil War, fou...

Eustis, William

(Encyclopedia)Eustis, William yo͞oˈstĭs [key], 1753–1825, U.S. government official, b. Cambridge, Mass. A surgeon in the patriot forces during the American Revolution, he later served (1801–5) in Congress as...

Foster, Abigail Kelley

(Encyclopedia)Foster, Abigail Kelley, 1810–87, American abolitionist and advocate of women's rights, b. near Amherst, Mass. Abby Kelley, as she was known to her contemporaries, began her crusade against slavery i...