Ellis (Harvard, M.D. 1881) did postgraduate study at the Harvard Medical School in physiology with Henry P. Bowditch. After 1886 he was an ophthalmologist in Springfield and Monson, Mass. He conducted ophthalmological experiments; and his research focused on the physiology and psychology of visual sensations and perceptions. Ellis' inventions included the prism-stroboscope. At his death, he was the last original member of the American Physiological Society.
From the description of Memoirs of Frederick Warren Ellis, ca.1947. (Harvard University). WorldCat record id: 281431890