Chemistry Professor at Unv. of Mich.
20th Century Biographical Dictionary of Notable Americans, Vol 3:290 DOUGLAS, Silas Hamilton, chemist, was born in Fredonia, NY, Oct 15, 1816, son of Benjamin and Lucy (Townsend) Douglas, grandson of Daniel and Lydia (Douglas) Douglas, and of Samuel and Lydia (DYER) Townsend; and a descendant of William (1610-1682) and Anne (Mattle) Douglas of Scotland, afterward of New London CT.
He attended the academy in his native place and received the degree of M.D. from the College of phuysicians and surgeons, Baltimore MD., in 1842. He practised medicine in Dearborn MI., 1843-44; served as assistant to the professor of chemistry at the University of Michigan, 1844-45;lecturer on chemistry and geology, 1845-46; professor of chemistry,mineralogy and geology, 1846-51; of chemistry, pharmacy, medical jurisprudence, geology and mineralogy, 1851-55; of chemistry, mineralogy, pharmacy and toxicology, 1855-70; of chemistry, 1870-75;and of metallurgy and chemical technology, 1875-77. From 1870 to==== he was director of the chemical laboratory. He resigned his college duties in 1877. He published; Tables for Qualitataive ChemicalAnalysis (1864); and Qualitataive Chemical Analysis (with Prof. Albert B. Prescott, 1873; 3d ed.; 1880) He died at Ann Arbor, MI =Aug 26, 1890.
Died after July of 1880. Listed on 1880 census.