The first edition of this book was published in 1939. Obviously psychiatry has undergone a revolution since that time, so that extensive revisions of the book became necessary. The volume is designed primarily for the instruction of students. Indeed, it gives opportunity for the student to make a psychologic evaluation of himself according to a variety of tests now in common use. There are many clinical devices fully elucidated. Thereafter is a consideration of a psychoneurosis and other forms of mental disturbance with excellent clinical reports. Mental difficulties are evaluated as depressions, elations, illusional states, convulsive states and organic deficit reactions. In the present experimental stage of psychiatric study and education, the book offers a reasonably well oriented guide for the general practitioner.