A commemorative "Address," by Professor A. B. Crosby, contains the following account of Professor Smith's successor: "Reuben Dimond Mussey was born in Pelham, N. H., June 23, 1780. His father, Dr. John Mussey, was a respectable physician and an excellent man. "Determined to have an education, although too poor to immediately attain it, he labored on a farm in summer and taught a school during the winter. This he continued to do until, at the age of twenty-one, he entered the Junior class in Dartmouth College, in the year 1801. He continued to teach for his support while in college, and acquitted himself creditably as a scholar, being reckoned in the first third of his class. "He was graduated in August, 1803, and immediately became a pupil of Dr. Nathan Smith, the founder of Dartmouth Medical College. The following summer young Mussey taught an academy at Peterborough, and studied with Dr. Howe of Jaffrey. "He completed his studies with Dr. Smith, sustained a public examination, and read and defended a thesis on Dysentery. The degree of Bachelor of Medicine having been conferred upon him in 1806, he commenced practice in Ipswich, now Essex, Mass. Here he practiced successfully for three years, when he settled his business and went to Philadelphia, where he engaged in medical study for a period of nine months. While at Chebacco, now Essex, Mass., he married Miss Mary Sewall, who survived the marriage only three years. He subsequently married Miss Hetty Osgood, a daughter of Dr. Osgood of Salem, who served as a surgeon in the army during the Revolution. Under the instruction of Benjamin Smith Barton, he attended a full course of lectures in the University of Pennsylvania, and was graduated as a Doctor in Medicine in the year 1809. The professors at that time were Rush, Wistar, Physic, Dorsey, Barton, and Woodhouse. "Drs. Chapman and James gave the course in Obstetrics. Dr. Mussey here distinguished himself by a series of experiments tending to rebut some of the generally received physiological doctrines of the time. "On his return from Philadelphia he settled in Salem, Mass., and soon afterward formed a partnership with Dr. Daniel Oliver, subsequently a professor in the Dartmouth Medical College. "These gentlemen gave popular courses of lectures on Chemistry, in Salem, with great acceptance. Dr. Mussey remained in this field between five and six years, and attained a large practice during the last three years, averaging, it is said, a fraction over three obstetric cases a week. He had already distinguished himself as a surgeon, and in the autumn of 1814 he was called to the chair of Theory and Practice at Dartmouth. He gave in addition a course on Chemistry, most acceptably to the students, and engaged in an extended and a laborious practice.