This is a concise compend of psychiatry which aims to give the chief and generally recognized facts regarding mental diseases, especially those of practical importance, avoiding theoretical considerations as far as possible. Seventy-two pages are devoted to general psychiatry, with consideration of general etiology, symptomatology, diagnosis, pathology, prognosis and treatment, giving clear definitions of terms used in psychiatric literature and detailed and practical directions for taking the history and making physical and mental examinations. Descriptions are given of tests for all the principal physical and mental symptoms and signs encountered, and brief statements are made as to the significance of each one and the mental diseases in which it is apt to be found. The author does not discuss the subject of psychanalysis. A special portion deals with individual conditions.