Samuel Jackson Holmes

Samuel Jackson Holmes (7 March 1868-1964) was an American zoologist. He was at University of California, Berkeley. He was also a eugenicist.

He was the son of Joseph Holmes and his wife Avis Folger née Taber. He obtained his BSc from the University of California in 1893, his MSc in 1894 and PhD from the University of Chicago in 1897.

Between 1899 and 1905 he worked at the Institute of Zoology at the University of Michigan. In 1905 he was appointed associate professor at University of California, Berkeley, and in 1917 was promoted to full professor. He retired in 1939 but continued on as emeritus professor until 1964.

He was on the initial board of the Human Betterment Foundation eugenics society.

He married Cecelia Warfield Skinner in 1909 and they had five children. He is the grandfather of Joseph Holmes, landscape photographer.

He was the author of "The Evolution of Animal Intelligence" (1911), "Studies in Animal Behavior" (1916), "Studies in Evolution and Eugenics" (1923), "A Bibliography of Eugenics" (1924), "Life and Evolution" (1926), "The Eugenic Predicament" (1933), "The Negro’s Struggle for Survival" (1937) et "Life and Morals" (1948).