The principle holding that in a warm-blooded animal species having distinct geographic populations, the body size of animals living in cold climates tends to be larger than in animals of the same species living in warm climates. Animals with larger bodies are generally more massive and thus produce more body heat. They also have smaller surface areas relative to their mass, resulting in a relatively lower rate of heat radiation. The Bergmann rule is named for the German biologist Karl Bergmann (1814-65). Compare Allen’s rule.
a crevasse, or series of crevasses, at the upper end of a mountain glacier. Historical Examples Hours of Exercise in the Alps John Tyndall Outlines of the Earth’s History Nathaniel Southgate Shaler The Rocky Mountain Wonderland Enos A. Mills The Life of Sir James Fitzjames Stephen, Bart., K.C.S.I. Sir Leslie Stephen Adventures on the Roof […]
William, 1921–1994, U.S. composer.
the philosophy of Bergson, emphasizing duration as the central fact of experience and asserting the existence of the élan vital as an original life force essentially governing all organic processes. Historical Examples The London Mercury, Vol. I, Nos. 1-6, November 1919 to April 1920 Various noun the philosophy of Henri Bergson, which emphasizes duration as […]
bergstrom Historical Examples Monkey On His Back Charles V. De Vet Monkey On His Back Charles V. De Vet Half Portions Edna Ferber Monkey On His Back Charles V. De Vet