Breeding, Training, Management and Diseases of the Horse - And Other Domestic, With Ninety-Five Illustrations #252559

There are certain biological laws which relate to Re production, to which all animals are subject. Many of those laws have only been formulated within the past half century; in fact, to the influence of Charles Darwin more than any other man, or perhaps any ten men, is due the formulating of reproductive laws and the grouping of facts relating to them.