An important book, but should be carefully presented to the customer before being sold. A physiology for children, going into detail as to structure and function of every part of the human body. The sections which conservatives may question are those dealing with the sexual development and the functioning of the sex organs. In the opinion of this reader, inclusion of this material is essential, and it has been handled without prity, but parents should know it is there before handing it on. Sell to those who like the de Schweinitz book. Growing up, and the Mary Ware Dennett pamphlet, The Sex Side of Life.