Of the more recent and easily available books relating to the reconstruction of philosophy and the newer conceptions in regard to mind and intelligence the following may be mentioned: Dewey, _Reconstruction in Philosophy_ and _Human Nature and Conduct_ (Holt); Woodworth, _Dynamic Psychology_ (Columbia University Press); _Trotter, Instincts of the Herd in Peace and War_ (Macmillan)--especially the first two sections, pp. 1-65; Bernard Hart, _The Psychology of Insanity_ (Putnam), an admirable little introduction to the importance of abnormal mental conditions in understanding our usual thoughts and emotions; McDougall, _Social Psychology_ (J. W. Luce); Everett D. Martin, _The Behavior of Crowds_ (Harpers); Edman, _Human Traits_ (Houghton-Mifflin). For the so-called behavioristic interpretation of mankind, see Watson, _Psychology from the Standpoint of a Behaviorist_ (Lippincott). Haldane, _Mechanism, Life, and Personality_ (Dutton), is a short discussion of some of the most fundamental elements in our modern conception of life itself. When it comes to gaining an idea of "Freudianism" and all the overwhelming discoveries, theories, and suggestions due to those who have busied themselves with the lasting effects of infantile and childish experiences, of hidden desires--sexual and otherwise, of "the Unconscious" and psychoanalysis, while there are many books, great and small, there would be no unanimity of opinion among those somewhat familiar with the subjects as to what should be recommended. It would be well if everyone could read in Havelock Ellis, _The Philosophy of Conflict_ (Houghton-Mifflin), the essay (XVIII) on Freud and his influence. Wilfred Lay, _Man's Unconscious Conflict_ (Dodd, Mead), is a popular exposition of psychoanalysis, and Tansley, _The New Psychology_ (Dodd, Mead), likewise. Harvey O'Higgins, _The Secret Springs_ (Harpers), reports, in a pleasing manner, some of the actual medical experiences of Dr. Edward Reede of Washington. But much of importance remains unsaid in all these little books for which one would have to turn to Freud himself, his present and former disciples, his enemies, and the special contributions of investigators and practitioners in this new and essential field of psychological research and therapy.