IN MEMORIAM.

TRAILL GREEN, M.D., LL.D.

A COMPILATION.1

BY WILLIAM WARREN POTTER, M.D.,

BUFFALO.

Dr. TRAILL GREEN, an Honorary Fellow of this Association, died at his residence in Easton, Pa., April 29, 1897, aged eightythree years. He was born at Easton, May 25, 1813, and his early years as well as his riper manhood and his declining days were spent amid the beautiful scenery of the valleys of the Lehigh and Delaware. He received his preliminary education at Easton Union Academy, a noted school of its day, which was built in 1794, and its teachers were known far and wide. His early education was continued at Minerva Academy, also a famous school located at Easton.

Having determined to enter the profession of medicine, he registered as a student with Dr. Joseph K. Swift, and soon afterward he went to the University of Pennsylvania. He there took two courses of instruction, after which under the advice of his preceptor, he enrolled himself with Dr. J. K. Mitchell, Professor of Medicine in Chapman's Institute. After completing three full courses in the two institutions named, he received his doctorate degree in 1835. It is related of him that his belief was so fixed as to the necessity, even at that early day, of three full courses of medical

1 The essential data of this Memoir were compiled from an address by James W. Moore, M.D., delivered before the Lehigh Valley Medical Association, and published in the Lehigh Valley Medical Magazine, July, 1897.

instruction before graduation, that he refused to receive a student without a pledge that he would decline to apply for his degree unless so instructed.

After graduation Dr. Green was appointed physician to the Fifth Street Dispensary, Philadelphia, where he attended out-door patients and held clinics. Having held office at the Dispensary for a year, where he accumulated and recorded a large experience, he returned to Easton in 1836, and began to teach chemistry to a private class. His enthusiasm on this subject attracted the attention of the authorities of Lafayette College, and in 1837 he was appointed Professor of Chemistry in that institution. For the next four years he devoted himself to this work in addition to the practice of medicine. In May, 1841, he received and accepted a call from Marshall College at Mercersburg, Pa., to teach the natural sciences. He now dropped the practice of medicine, except as a consultant, and devoted his time mainly to the teaching of his favorite subjects, though he occasionally lectured to the students on physiology and hygiene.

While at Mercersburg, in 1844, he married Miss Harriet Moore, of Morristown, N. J., who had been a pupil in one of his classes in botany. He returned to Easton in 1848, and was reappointed the following year to the chair of chemistry in Lafayette College. Here he resumed the practice of medicine, delivered a course of lectures in chemistry annually, and also instructed classes in botany and the natural sciences. He was prominent in the organization of the Medical Society of Northampton County, joining a call for its foundation in 1849, and was elected its first president.

He was one of the promoters and first members of the American Association for the Advancement of Science, which was organized in 1851. Dr. Green's reputation as a lover and teacher of natural sciences soon became widespread, and various scientific societies invited him to address them, and honored him by electing him to honorary membership.

Among these societies were the Philomathean, of the Lawrenceville High School; the Calliopean, of the same school; the Natural History Society of Lafayette College; the Natural History Society of Rutgers College, December 18, 1883; the Buffalo Society of Natural Science, 1864; the Troy Scientific Society, September 18, 1871; the Lancaster Linnæan Society, January 30,