The triumphs of preventive medicine are a matter of just pride to the medical profession. But while we may congratulate ourselves on what has already been accomplished, we must admit that much remains to be done. Considered in the light of what is possible, that which has been done is so far behind what might have been done as to constitute after all an occasion rather for regret, coupled with a stimulus to renewed and greater effort, than for self-gratulation.
This aspect of the question is emphasized by an extensive monograph by Dr. N. E. Ditman1 on "Education and Its Economic Value in the Field of Preventive Medicine," in which he urges the need of a school of sanitary science and public health. The present problems of the public health and of sanitary administration involve much more than a knowledge of bacteriology or the physical causes of disease. Politics, sociology