Dr. A. S. Alexander, the writer and compiler of "Horse Secrets," has had upward of 25 years' experience in matters pertaining to agriculture, horse breeding, veterinary science, press writing and teaching. He was the author of the first stallion service legislation and inspection regulation in America, the first law of the kind having been written by him and enacted by the Wisconsin Legislature in 1905. Similar legislation now is in force in some 16 other states, and it is accomplishing much for the improvement of horse breeding.