“Oestrus and Ovulation”, 1936

This series includes reprints of articles and books covering his pioneer research in the fields of embryology, morphology, zoology, veterinary medicine, and anatomy from 1906-1936. The articles include his famed studies in eyes of fish and chick embryos, the affect of alcohol on embryos, germ cells and offspring, and studies on physical inheritance. Also included is George Papanicolaou's Sexual Cycle in the Human Female as Revealed by Vaginal Smears. (1933). This study was influenced by Stockard's studies on the sexual cycle of guinea pigs.