This book is a continuation of the fertile author's Outline of Psychology, a review of which appeared in the JOURNAL, Vol. V, p. 496. We may say at once that its outstanding merit is the full recognition it gives to the importance of psychopathology for psychology in general. 'For I believe that academic psychology, even in Germany and America, cannot long continue to resist the inroads of psychopathology upon its preserves; cannot long continue to retain its atomistic and mechanical prejudices. I believe that academic psychology must soon reform and transform itself into a science capable of assimilating all forms of new insight into human nature, and of giving them a due place in one consistent body of knowledge and theory' (p. 481). There must be very few academic psychologists who can vie with Dr. McDougall for his insight into this profound truth. The extent of the ground he covers may be seen from the following list of chapter headings. I. Sketch of the Schools of Abnormal Psychology. II. On the Nature of Functional Disorders in General. III. Fatigue,