Recent Progress in Hormone Research, Volume I covers the proceedings of the Laurentian Hormone Conference, held in Mont Tremblant, Quebec. This symposium brings together theoretical and experimental studies on the various aspects of hormone research. This book is organized into four sections encompassing 13 chapters. The opening section deals first with the role of acetylcholine in the mechanism neuro-humoral activity, followed by an overview of the dependence of mating activities on particular endocrine secretions. The succeeding two sections describe the chemical, physiological, and metabolic aspects of adrenal hormones. The last section surveys the relation of the hormones to human osteogenesis and carcinogenesis. This section also looks into the factors influencing the rate and duration of child growth. This book will prove useful to endocrinologists and developmental biologists.