CONKLIN, EDWIN GRANT (1863– ), American bi ologist, was born at Waldo, 0., on Nov. 24, 1863. He graduated at Ohio Wesleyan university in 1886 and received from Johns Hopkins university in 1891 the degree of doctor of philosophy. He was professor of biology at Ohio Wesleyan university in 1891 94, and professor of zoology at Northwestern university from 1894 to 1896 and at the University of Pennsylvania from 1896 to 1908 when he was appointed to a similar chair in Princeton university. He made valuable researches in embryology and cytology and in the mechanism of heredity and evolution, and by his skill as an investigator, teacher and writer, rose to foremost rank among American zoologists. Besides numerous and varied contributions to scientific journals, his writings include Heredity and e. nvironment in the Development of .Ten (1915-21) ; Direc tion of Human Evolution (1921) ; Problems of Organic Adapta tion (1921) ; and A Synopsis of the General Morphology of Animals (Princeton, N.J., 1921).