This monograph is designed to give information to the general practitioner and to the family physician concerning psychogenic and endogenous depression (the author's terms). It is apparently part of a series designed for the above physicians on various subjects in psychiatry and neurology. The chief value of this book is in giving a (? predominant) view of the concepts of psychogenic and endogenous depressions held by Continental, presumably mainly German, psychiatrists. Despite the author being Czechoslovakian, most of the literature reviewed is German in origin. The author first excludes from consideration ``symptomatic depressions'' which he defines as those occurring in the course of another illness, including alcoholism, schizophrenia, organic brain disorders, and medical illness. He does not include neuroses in this category. Endogenous depression is defined primarily as postpartum depression, involutional depression, or manic-depressive illness, depressed type. The primary features of the latter