In 1900 he received a Bachelor of Arts degree from Johns Hopkins University.
[2] In 1901–1902 he was assistant in the United States Bureau of Fisheries and in the North Carolina Geological Survey.
[1] In 1905, he began teaching zoology at the University of Michigan, becoming in 1908 assistant professor of biology.
[3] Glaser had two children with his first wife Dorothy Gibbs Merrylees whom he married in 1909 and divorced in 1933.
In 1944 Glaser was forced to resign as chairman because he had allowed his research assistant, who was supported with Rockefeller Foundation money, to spend time working for Wrinch.