This volume is a composite production containing chapters on histogenesis of the sex cells, by Champy; sex physiology of the male, by Busquet; sex physiology of the female, by Vignes; secondary sex characters, by Pezard; physiology of pregnancy, by Vignes; physiology of the new-born, by Binet; physiology of lactation, by Porcher; one chapter on histology of growth, by Champy; another chapter on physiology of growth, by Lesne and Binet, and one on heredity and one on teratology, both by Rabaud.
As in similar monographs by several authors, the chapters have an unequal value. The monograph, as a whole, is reliable, helpful, and fairly comprehensive. The chapters by Dr. Vignes are particularly excellent. Dr. Pezard, who writes on the secondary sex characters, has done much experimental work on the physiology of sex and sex characters, particularly among birds. It is therefore surprising to find that this chapter is not up to