This dainty little volume, prepared by John M. Keating, M.D., of Philadelphia, and published by W. B. Saunders, 913 Walnut St., in that city, will be found to be a very serviceable pocket companion for practitioners, and especially for students in the class-room when larger works of the same kind are not easily accessible. It seems to be remarkably accurate in terminology, accentuation and definition. A full-faced type renders the reference to words as easy as in the larger works. Students will find the little volume very serviceable. A brief list of poisons and their antidotes is found at the close of the book.