William Hunter on the anatomy of human pregnancy, 1774. This page, showing a human foetus in the uterus close to full term, is from 'Anatomia uteri humani gravidi' (The anatomy of the human gravid uterus) by Scottish anatomist William Hunter (1718-1783). Hunter was the leading obstetrician of the time, and this was his most famous publication. His approach to anatomical illustration was modelled on that used by Leonardo da Vinci.