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hogback

(Encyclopedia)hogback, sharp-crested ridge with steep slopes on both sides, formed by the erosion of steeply tilted rock layers. Hogbacks are commonly formed along the eroded flanks of large, tightly folded anticli...

horseshoe

(Encyclopedia)horseshoe, narrow plate, commonly of iron or steel, shaped to fit a horse's hoof and attached to the hoof by nailing it to the inner edge of the horny wall of the hoof. Horseshoes vary from the light ...

Kilpatrick, William Heard

(Encyclopedia)Kilpatrick, William Heard kĭlpăˈtrĭk [key], 1871–1965, American philosopher, b. White Plains, Ga., grad. Mercer College, 1891, Ph.D. Columbia, 1912, and studied at Johns Hopkins. He taught at Te...

Sowerby, Leo

(Encyclopedia)Sowerby, Leo sōˈərbē [key], 1895–1968, American composer and organist, b. Grand Rapids, Mich. Sowerby studied at the American Conservatory, Chicago, and with Percy Grainger. In 1921 an American ...

diffraction

(Encyclopedia)diffraction, bending of waves around the edge of an obstacle. When light strikes an opaque body, for instance, a shadow forms on the side of the body that is shielded from the light source. Ordinarily...

Low, Sir David

(Encyclopedia)Low, Sir David lō [key], 1891–1963, British cartoonist, b. New Zealand. In 1919 Low went to England, where he worked on the London Star (1919–27). Thereafter he successively joined the staff of t...

mezzotint

(Encyclopedia)mezzotint mĕtˈsətĭnt, mĕdˈzə–, mĕzˈə– [key] [Ital.,=halftint], method of copper or steel engraving in tone. A Dutch officer, Ludwig von Siegen, is given credit for the invention of mezzo...

Beecher, Lyman

(Encyclopedia)Beecher, Lyman, 1775–1863, American Presbyterian clergyman, b. New Haven, Conn., grad. Yale, 1797. In 1799 he became pastor at East Hampton, N.Y. While serving (1810–26) in the Congregational Chur...

bandicoot

(Encyclopedia)bandicoot, small marsupial mammal native to Australia and nearby islands. There are 19 species in eight genera. Bandicoots have long, pointed, shrewlike faces; gray or brown fur; and long, bushy, ratl...

Bangorian Controversy

(Encyclopedia)Bangorian Controversy băng-gôˈrēən [key], religious dispute in the Church of England during the early part of the reign of George I. Benjamin Hoadly, bishop of Bangor, Wales, delivered a sermon (...