The preface, written by Professor Hanna of Stanford University, states the case perfectly when it says that "the purpose of this book is to help teachers, parents and all others who guide youth to gain a clearer insight into the needs of children by understanding better the distinctive characteristics of boys and girls in the various stages of their growth and maturation. It attempts to picture the child as a whole."
To marshal all of the facts and opinions necessary to accomplish this appalling task requires a courageous person; Dr. Helen Pryor has made the attempt, in general with good results. I believe that the preface is substantially correct when it states that "this volume will find a wide reception among teachers and parents because it develops the scientific bases of these differences in a language and style that the layman to medicine and physiology can understand, and because it