Robley Dunglison (1789-1869) taught for a number of years in the University of Virginia, but removed later to the Jefferson School in Philadelphia. He was a man of great industry and versatility, and wrote on a variety of subjects, his best-known work being his _Medical Dictionary._ [Illustration: 0307] W. E. Horner (1793-1853) taught anatomy and histology in the University of Pennsylvania, and will long be remembered for his researches in these branches. John W. Draper (1811-1882) made himself eminent as well by his researches in photography{288} and in general science, as by the publication of his treatise on _Human Physiology_, which first appeared in 1853. Better known as physiologist was John C. Dalton (18251889), whose text-book is to-day studied in many colleges and who first introduced the method of vivisectional classroom demonstrations in our own school here in Buffalo. Alonzo Clark (1807-1887) was one of the most eminent teachers of medicine that this country has produced. Austin Flint (1812-1886) was also a famous teacher of medicine in New York, who made his first reputation in the then small school in Buffalo. [Illustration: 0308] His text-book on _Practice_ is the most popular American work on the subject that has ever appeared, and is still in general use. William P. Dewees (1768-1841){289} was the author of a treatise upon _Diseases of Children_, which reached a tenth edition and which rivaled the similar treatise of John Forsyth Meigs. The best-known teacher of dermatology and venereal diseases was Freeman J. Bumstead (1826-1879), author of the most popular work upon the latter subject that has been issued from the medical press. He wras professor of these diseases at the College of Physicians in New York. His text-book vied with that produced by William H. Van Buren (1819-1883), who, in connection with Dr. Keyes (still living), wrote a treatise upon the _Surgical Diseases of the Genito-Urinary Organs_, including syphilis, which has been, since its appearance, exceedingly popular with the medical profession. Among the best-known neurologists and alienists of the century since Benjamin Rush wrote his _Inquiries and Observations upon Diseases of the Mind_ (1812){290} was Dr. Isaac Ray, who, in 1838. published a work upon the medical jurisprudence of insanity. [Illustration: 0309] Dr. Brigham ( 1798-1849) was superintendent of the Utica Insane-asylum for some years before his death; and Dr. Kirkbride, who died in 1883, had been superintendent of the Philadelphia Asylum for over forty years. Dr. John P. Gray followed Brigham as superintendent of the Utica Asylum, where he remained for thirty-two years, and founded the _Journal of Insanity_.