This vintage text contains a comprehensive treatise on the general scientific principles which underline the genetics, fertility, growth and development of animals. This text is based on two series of lectures, given to inform the student and animal breeder of some of the results of scientific research - and its application to the practical problems of livestock production. Complete with practical, timeless information and profusely illustrated, this is a text that will be of much use to the modern farmer. The chapters of this volume include: 'General Principles', 'The Process of Reproduction', 'Fertility', 'Growth', 'Horses', 'The Breeding Season', 'Duration and Frequency of the Heat Periods', 'Changed in the Ovary', 'Fertility and Sterility', 'The Stallion and Artificial Insemination', 'Diagnosis of Pregnancy', 'Cattle', 'Causes for Sterility', etcetera. We are proud to republish this antique book now complete with a new introduction on farming.