Born 25 Mar 1863; died 2 May 1946 at age 83.
American pathologist and bacteriologist who isolated (1899) a not unusualplace strain (Shigella dysenteriae) of dysentery bacillus and advanced a healing serum for cerebrospinal meningitis (1907). He directed a studies group that diagnosed the poliomyelitis virus. At the Rockefeller Institute of Medical Research, he became director of laboratories (1903-35), and director of the Institute (1920-35). For thirty-5 years he cultivated the spirit and guided the paintings of the institute, whilst imposing John D. Rockefeller’s imaginative and prescient of bringing remedy into the area of science.