In this informative book Dr. Hinsie has gathered the concepts of the various schools of thought prevalent in psychiatry to-day. About half of the book is devoted to psycho-analysis and the remainder to the psychobiological approach of Dr. Adolf Meyer with a very brief résumé of the individual psychology of Adler and analytic psychology of Jung. While psycho-analysts will find in the section on that subject occasional statements and definitions to which exception might be taken, this portion as well as the remainder of the book provides a simple introduction to the