In this book are printed the talks given at the opening ceremonies of the Michael Reese Institute for Psychiatric Research in June, 1951. Subtitled 'An Overview', the chapters set forth the opinions of leading psychiatrists, neurophysiologists, psychologists, and others on the status at mid-century of their respective disciplines. The contributions are somewhat uneven in quality but all are meaty. Outstanding are the papers by Therese Benedek, The Organization of Psychic Energy, and George Engel, Homeostasis, Behavioral Adjustment and the Concept of Health and Disease. On such an occasion and with such a title, nothing is to be found in the book that has not been said elsewhere; but the contributors are well known and their statements sound and interesting.