Calkins, Gary N. (Gary Nathan), 1869-1943 (Nombre personal)

LCCN 17-25304: His Biology, c1917 (hdg.: Calkins, Gary Nathan, 1869- ; usage: Gary N. Calkins)

Complete dictionary of scientific biography online, March 18, 2019 (Calkins, Gary Nathan; b. Valparaiso, Indiana, 18 January 1869; d. Scarsdale, New York, 4 January, 1943; In 1893 he began graduate work at Columbia University, from which he received the Ph.D. in 1897. While a student there, he started teaching in 1894, as tutor in biology. He rose rapidly through the ranks to a professorship of zoology in 1904. Two years later his title was changed to professor of protozoology. He remained at Columbia for the rest of his life, retiring as professor emeritus in 1939)