A considerable number of books on elementary medical statistics are now available, some useful only in special situations, others written with sufficient discernment and imagination to be generally adaptable to the needs of American medical students. Mainland's book belongs to the latter category and should prove helpful in the hands of a capable teacher. As the author intimates in his preface, one should not be too enthusiastic about seeing statistics established as a subject in the undergraduate curriculum, for in the hands of some instructors the emphasis on memorizing, on techniques, and on preparation for board examinations is a handicap. To combat the perennial tendency toward static pedagogy there is need of recognition of the importance of the subject by the administrative officers and a constant effort by a sincere and versatile instructor. The present book supplies a wealth of material about which a good introductory course can be organized.