This book has little in common with the bulk of sex literature which has glutted the market in recent years. It is a sane, wholesome, dignified presentation of the biological, historical, and psychological aspects of sex which are of interest to every intelligent man and woman. The author is well qualified to write authoritatively of the emotional problems of both normal and abnormal young people. The present volume is the outgrowth of a series of lectures in sex hygiene which Dr. Richmond has given to nurses in the Training School of St. Elizabeths Hospital during the past ten years. The material was first collected in response to questions submitted