Progress in Comparative Endocrinology

<i>General and Comparative Endocrinology</i>is a new journal that, unlike several of its contemporaries, has quickly proved its<i>raison d'être</i>and achieved the appreciation of its readers. This book is the first supplement to the journal. It is a handsome volume containing the proceedings of the Third International Symposium on Comparative Endocrinology, which was held at Oiso, Japan, June 5-11, 1961. The individual papers, most of which are well presented and illustrated, are grouped together into chapters on the basis of their subject (chemical and immunological aspects of hormones, hormones affecting environmental adjustment, regulation of pigmentary phenomena, neuroendocrine phenomena, hormonal control of reproductive and adaptive behavior, integration of reproductive functions, and endocrine regulation during development). This, along with a panel discussion of prospectives in endocrinology, imparts some cohesion to this array of papers. The review nature of some of the contributions is also a feature attractive to the reader who