The book "The Breeding of the American Bison" by William T. Hornaday is a detailed scientific study of the tragic history of the breeding of the American bison to the brink of extinction. The author reveals historical events and factors that led to the mass slaughter of bison, tells about the influence of settlers, hunters and railroad workers on the population of these powerful animals. In addition, the book includes data on bison recovery efforts and the importance of their conservation to the North American ecosystem. The Extermination of the American Bison is an important work that reminds us of the importance of preserving wildlife and maintaining balance in natural ecosystems.