Figure 63 represents an old engraving showing the birth of Eve.

Bartholinus, the Ephemerides, Otto, Paullini, Schurig, and Plot speak of instances of fetus in fetu.

Ruysch describes a tumor contained in the abdomen of a man which was composed of hair, molar teeth, and other evidences of a fetus.

Huxham reported to the Royal Society in 1748 the history of a child which was born with a tumor near the anus larger than the whole body of the child; this tumor contained rudiments of an embryo.

Young speaks of a fetus which lay encysted between the laminae of the transverse mesocolon, and Highmore published a report of a fetus in a cyst communicating with the duodenum.