The Hormones: Physiology, Chemistry and Applications, Volume I covers roles of hormones in a wide diversity of vital processes. This volume consists of 16 chapters that discuss the chemistry of hormones, their role in organisms other than mammals, and some aspects of the animal physiology. After a brief history of hormone research studies, this book goes on exploring the chemistry, physiology, assay, and mechanism of action of plant, insect, and crustacean hormones. The subsequent chapters examine the biochemistry, physiology, and assay methods of hormones of the gastrointestinal tract, parathyroid gland, pancreas, and ovary. These topics are followed by discussions on the chemistry and metabolism of other hormones, such as progesterone, androgens, and adrenal cortical and anterior pituitary hormones. The final chapters consider the role of ovarian, pituitary, and thyroid hormones in mammary growth, as well as the mechanism of hormonal control of lactation. Endocrinologists, applied biologists, physiologists, biochemists, and researchers in various fields of medicine will find this book of great value.