WEISMANN, AUGUST

(1834-1914), Ger. biologist; appointed prof. of zool. at Freiburg (1866); early researches devoted to pure zool., later turned attention to problems of evolution; works, most of which have been trans. into English, include Studies in the Theory of of Descent, 1882; H ays on Heredity, 1892; The Germ-plasm, 1893, and Evolution Theory, 1904.