The first edition of this popular text was prepared by M. J. Rosenau in 1913. At that time public health was a new specialty which concerned itself largely with the prevention of communicable diseases. The wide field now encompassed by those engaged primarily in preventive medicine is illustrated by the great variety of subjects covered in the present volume, many of which were never considered the concern of public health physicians until recently. For instance, preventive medicine now encompasses nutrition, mental hygiene, occupational diseases, the effects of environmental factors, such as temperature, radiation, barometric pressure, and noise, on the population, and a variety of other conditions affecting community health.
Specific methods of disease prevention, prevention of food spoilage and contamination, and water purification are dealt with adequately. Dr. Maxcy assembled a group of distinguished collaborators, each a recognized authority on some phase of preventive medicine, to help in the preparation