HUBBARD, Oliver Payson, chemist, born in Pomfret, Connecticut, in March, 1809. He studied at Hamilton in 1825-'6, and was graduated at Yale in 1828, where he also acted as assistant to the elder Silliman, whose daughter he subsequently married. In 1836 he was appointed professor of chemistry and pharmacy, mineralogy and geology, at Dartmouth, which chair he held until 1866, when, until 1871, he delivered lectures on these subjects, after which he again became connected with the faculty as professor of chemistry and pharmacy, continuing as such until 1883, when he was made professor emeritus. He was associated with Professor Silliman in the examination of the United States for the cultivation of sugar made at the instance of the secretary of the treasury in 1832 and was especially assigned to the eastern states. During 1863-'4 he was a member of the New Hampshire state legislature. In 1837 he received the degree of M. D. from the South Carolina medical college, and in 1861 that of LL.D. from Hamilton. Professor Hubbard has been one of the overseers of the Thayer school of civil engineering of Dartmouth since its establishment in 1871. He was one of the secretaries of the American association of geologists and naturalists in 1844, and was for many years corresponding secretary of the New York academy of sciences. He has contributed papers to the "American Journal of Science," and is the author of a "History of Dartmouth Medical College and Dr. Nathan Smith, its Founder" (Concord, New Hampshire, and Washington, D. C., 1880).