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Perutz, Max Ferdinand

(Encyclopedia) Perutz, Max Ferdinand, 1914–2002, British molecular biologist, b. Vienna. One of the pioneers in the field of molecular biology, Perutz studied chemistry at the Univ. of Vienna (1932–…

tanning

(Encyclopedia) tanning, process by which skins and hides are converted into leather. Vegetable tanning, a method requiring more than a month even with modern machinery and tanning liquors, employs…

Wilderness Road

(Encyclopedia) Wilderness Road, principal avenue of westward migration for U.S. pioneers from c.1790 to 1840, blazed in 1775 by the American frontiersman Daniel Boone and an advance party of the…

Cooper, James Fenimore

(Encyclopedia) Cooper, James Fenimore, 1789–1851, American novelist, b. Burlington, N.J., as James Cooper. He was the first important American writer to draw on the subjects and landscape of his…

Mammoth Cave National Park

(Encyclopedia) Mammoth Cave National Park, 52,830 acres (21,396 hectares), central Kentucky, authorized 1926, est. 1941. Located in a hilly, forested region, it offers numerous outdoor activities. It…

Groote, Gerard

(Encyclopedia) Groote, Gerard or GeertGroote, Gerard or Geertgāˈrärt, gārtˈ, grōˈtə [key], 1340–84, Dutch Roman Catholic reformer. He studied at Paris and elsewhere and because of his learning in…

Holmes, William Henry

(Encyclopedia) Holmes, William Henry, 1846–1933, American geologist, anthropologist, and museum director, b. Harrison co., Ohio. He was internationally recognized for his work in museum science. In…

Bancroft, Hubert Howe

(Encyclopedia) Bancroft, Hubert Howe, 1832–1918, American publisher and historian, b. Granville, Ohio. Bancroft began his career as a bookseller in San Francisco in 1852. Soon he had his own firm,…

Blue Ridge

(Encyclopedia) Blue Ridge, eastern range of the Appalachian Mts., extending south from S Pa. to N Ga.; highest mountains in the E United States. Mt. Mitchell, 6,684 ft (2,037 m) high, is the tallest…

electrodynamics

(Encyclopedia) electrodynamics, study of phenomena associated with charged bodies in motion and varying electric and magnetic fields (see charge; electricity); since a moving charge produces a…