First published as a popular work in hygiene, this volume has now become a textbook used in many schools and colleges. The present edition is especially revised for that purpose. There are new chapters on modern parenthood, community health and organized health work. Some of the sections of the original book have been omitted as not having special interest for the student in hygiene. A number of appendixes to the volume provide tables of standard weights, nutritional values of foods, data on the control of communicable diseases, and especially a personal health record so that every student may fill this out for himself and thereby receive more information as to the factors that are important to personal health and hygiene than in any other way. The great success of this volume is an indication of its usefulness.