Johann van Neck (1636-1714) painted the portrait of Frederick Ruysch (1638-1731) demonstrating the circulation of the placenta and the child, while his son, Hendrik Ruysch, himself later a physician, stands next to him holding a skeleton of an infant. The lace and rich clothing suggest that the lot of the physician in those days brought material rewards.
Ruysch sold his collection of anatomic preparations to Peter the Great for 30,000 gulden. His name is associated with the membrane underlying the choroid, the injection of anatomic preparations, the vessels connecting the placenta and child and other anatomic structures. The photograph is by Hanfstaengl.