TRACY, Roger Sherman, sanitarian, born in Windsor, Vermont, 9 December, 1841. He was graduated at Yale in 1862, and, after teaching for five years, took his medical degree at the College of physicians and surgeons of Columbia in 1868. For over a year he was house physician at Bellevue hospital, and in 1869 he was made inspector of prisons and hospitals for the department of charities and corrections in New York city. He was appointed sanitary inspector in the health department in 1870, became chief of the corps in July, 1887, and in October of the same year registrar of vital statistics. Dr. Tracy has contributed numerous articles on sanitary science to "The Popular Science Monthly," the "New York Medical Journal," and similar periodicals; also the articles on " Public Nuisances, ' Hygiene of Occupation," and Village Sanitary Associations" to Albert H. Buck's " Hygiene" (New York, 1879), and he is the author of " The New Liber Primus" (Boston, 1858), the "Appendix on Hygiene "in the" Primer of Physiology" (New York, 1884); also "Handbook of Sanitary Information for Householders" (1884) ; and "Essentials of Anatomy, Physiology, and Hygiene" (1885).