DR. K Johnson

A COMPREHENSIVE TREATISE

ON THE

Principles and Practice of Preventive Medicine

FROM AN AMERICAN STAND-POINT.

BY

GEORGE H. ROHÉ, M.D.,

PROFESSOR OF THERAPEUTICS, HYGIENE, AND MENTAL DISEASES IN THE COLLEGE OF PHYSICIANS AND SURGEONS,
BALTIMORE; SUPERINTENDENT OF THE MARYLAND HOSPITAL FOR THE INSANE; MEMBER OF THE
AMERICAN PUBLIC HEALTH ASSOCIATION; FOREIGN ASSOCIATE OF THE SOCIÉTÉ
FRANÇAISE D'HYGIÈNE, ETC.

THIRD EDITION

THOROUGHLY REVISED AND LARGELY REWRITTEN, WITH MANY
ILLUSTRATIONS AND VALUABLE TABLES.

DR. G. K. JOHNSON.