The influence of psychological factors in the genesis of both mental and physical ill-health is to-day a generally accepted fact, although opinions differ widely concerning the nature and medical significance of these factors. The general notion that the mind is of more importance in health than was admitted by the materialism of the previous century, it must be admitted, is in a great measure due to the work of Dr. Sigmund Freud in the special field of the psycho-neuroses.

With this change of outlook there has come a demand for the psychological instruction of medical students and practitioners, for as Dr. E. B. Strauss remarks “it is undoubtedly a fact that the average student of medicine leaves his medical school with scanty understanding of the mental side of his future patients.”

The question therefore arises as to the form such instruction should take, and its place in the curriculum of medical studies. These two questions are closely connected. Considering the line taken by Dr. Kretschmer in this'text-book, some preliminary training in the elementary details of clinical psychiatry is required, and this is suggested by the author himself. Were it however feasible, some preliminary grounding in general psychology might with advantage precede special medical studies, concurrently, let us say, with biology.