This early work on animal physiology is both expensive and hard to find in its first edition. At over one thousand pages, it comprehensively details functions of animal anatomy such as circulation, respiration digestion and many more. This is an in depth scientific work and is highly recommended for anyone interested in domestic animal biology. Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.