"Animal breeding has been a science only since the turn of the 20th century when Mendel's work was rediscovered," said Dr. W. A. Craft, recently in speaking on the subject "Systems of Animal Breeding" before the local chapter of the Junior Veterinary Medical Association. In spite of the fact that race preservation is one of the basic things in life, we have made little progress in its study, according to Dr. Craft, who is the present Director of the Federal Swine Breeding Laboratory on the Farm.