Originally published in London 1925, this book contains a comprehensive study of the biology and genetics involved in all aspects of stock breeding whether it be fowl, sheep, pig, dog, horses, and cattle, supported with extensive illustrations. Many of these earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.