Meanwhile, he had received the appointments in New York City of lecturer on practical chemistry and toxicology in Bellevue Hospital Medical College, and professor of chemistry in the American Veterinary College.
The chemical laboratories in these institutions, excepting Bellevue, were organized under his direction.
[2] Doremus made a specialty of medical chemistry and toxicology, and was frequently called into courts as an expert in such matters.
He wrote frequent papers on sanitary chemistry and methods of analysis, which appeared in the proceedings of the societies to which he belonged, and he is the author of a “Report on Photography,” contributed to the U. S. government reports on the Exhibition held in Vienna in 1873.
Doremus married playwright Elizabeth Johnson Ward in 1880, in Washington, D.C.[3] They had two sons who died in infancy, and a daughter, Katherine.