4. THE INFLUENCE OF JOY. By George Van Ness Dearborn, A.M., Ph.D., M.D. 223 pages. 12mo. $1.35 _net_. Presents the latest findings as to the effects of joy on the human organism. The writer gives sensible, easily understood suggestions to students and teachers and something of the psychology underlying the suggestions.--_A. L. A. Booklist_. 5. NERVOUSNESS: ITS CAUSES, TREATMENT AND PREVENTION. By L. E. Emerson, Ph.D.. Psychologist, Massachusetts General Hospital, Boston. 184 pages. 12mo. $1.35 _net_. A popular, psychological discussion of nervousness, and its treatment by psychoanalysis and mental readjustment. It should be of help to the nervous sufferer. A good introduction to the Freudian theory.--_A. L. A. Booklist_. 6. THE MENTAL HYGIENE OF CHILDHOOD. By William A. White, M.D., Superintendent of St. Elizabeths Hospital, Washington, D. C. 193 pages. 12mo. $1.35 _net_. A brilliant study of the psychology of childhood that analyzes the mental life of the child and shows parents how it may best be cultivated. _IN PREPARATION_ FEAR AND ITS CONSEQUENCES. By Boris Sidis, M.D., Director of the Sidis Psychotherapeutic Institute, Portsmouth, N. H. INSANITY AND ITS PREVENTION. By M. S. Gregory, M.D., Resident Alienist, Bellevue Hospital, New York. DREADS AND OBSESSIONS. By Dr. J. W. Courtney, Physician-in-Chief, Department of the Diseases of the Mind and Nervous System, Carney Hospital, Boston. THE CONQUEST OF LAZINESS. By Arthur Holmes, Dean of Pennsylvania State College. ------------------ LITTLE, BROWN & CO., Publishers 34 Beacon Street, Boston End of Project Gutenberg's Health Through Will Power, by James J. Walsh