It was about fifty years ago and at DePauw University, where he was at that time a junior student assistant, that the young DAN MACDOUGAL undertook, with only a window-sill for a laboratory, to follow some of Professor J. C. ARTHUR'S typewritten directions for experiments in plant physiology. He was apparently successful, for the next year found him at Purdue University, working as instructor in Professor ARTHUR 'S laboratory. With Professor ARTHUR'S encouragement-and in spite of the

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... of one or two others, who thought there was "no future for a young man in plant physiology"-he continued to show more interest in physiology than in other aspects of botanv. After three years at Purdue, he moved on to take charge of his chosen subject at the University of Minnesota, where he remained till 1899. With leave of absence for 1895-96, MAcDOUGAL studied at Leipzig with WILHELM PFEFFER and visited the laboratories of JULIUS SACHS, HERMANN VOCHTING and other leaders in Germany, Holland and England. Research begun with PFEFFER led to an important contribution on "The Curvature of Roots," on the basis of which Purdue University conferred on MAC-DOUGAL one of the three Ph.D. degrees ever awarded by that institution to persons not in residence.