 Walter was director of research for the Federal Bureau of Fisheries at Woods Hole, and conducted a course in field zoology for teachers of biology at the Marine Biological Institute of the Brooklyn Institute of Arts and Sciences at Cold Spring Harbor, Long Island.He was assistant director of the Institute from 1917 to 1926.Walter Hall was named after the Professor in 1959 it is now home to the department of Ecology and Evolutionary Biology on the Brown campus at 80 Waterman Street.