Medical tracts. I. On sugar. II. On the cow-pox. III. On the Yaws. IV. On Obi; or African Witchcraft. V. On the Plague; and Yellow Fever of America. VI. On Hospitals. Vii. On Bronchocele. Viii. On prisons. By Benjamin Moseley, M. D. Author of a Treatise on Tropical Diseases; Military Operations; and the Climate of the West Indies; and A Treatise on Coffee: Physician to Chelsea Hospital, Member of the College of Physicians of London; of the University of Leyden, of the American Philosophical Society at Philadelphia, &c. &c