This valuable book has previously received wide acceptance. In the third edition an attempt has been made to incorporate new knowledge and to remove that which is outdated, since the communicable diseases have declined in importance in the last 50 years because of the development of both new preventive and therapeutic measures. As the authors wisely point out, no modern health department program can be built around the communicable diseases. Nevertheless, a number of the infectious disorders still are not controlled. The first section of this book deals with the general problems of the infectious disorders, and the second section discusses these conditions specifically. Later chapters have to do with diseases spread through arthropods. Bibliographical material is attached to each section. Epidemiology is extensively discussed. This book will continue to be an extremely worth-while publication for students, nurses, physicians, and all those in the public health field.