This is an excellent brief discussion of sex for adolescent boys. It avoids sensationalism and gives all the necessary information in condensed form. The diagrams of the sex organs of both the male and the female are exceptionally clear. The book is characterized by a strikingly unemotional style. Its brevity also commends it. The physician who seeks a book to recommend for growing boys, either his own or those of his patients, will make no mistake in choosing this one.