Affiliations Courses Research 1923[position unknown]Us Bureau Of Fisheries1920Graduate StudentJohns Hopkins University1920InstructorJohns Hopkins University1921InstructorWashington University1921Instructor In ZoologyWashington University1922FellowWashington University1922Instructor In ZoologyWashington University1927Associate Professor Of BiologyWestern Reserve University1938Professor Of BiologyWestern Reserve University 1920Zoology 1920Instructor1921Zoology 1921Instructor1922Zoology 1922Instructor1923Zoology 1923Instructor 1920Zoology[role unknown]1921Zoology[role unknown]1922Zoology[role unknown]1927[subject unknown][role unknown]1938[subject unknown]Independent
