Note 4 — PROLEGOMENA.

It is impossible to desire a stronger or a more beautiful illustration of the modern theory of fecundation, than we find in the preparation here alluded to. It is the impregnated uterus (between two and three months) of a female who died of hydrophobia. Both the ovaria are laid open. In the left there are no appearances, beyond the Vesiculæ Graafianæ hardened by the alcohol: but in the right, namely, the ovarium of that side on which it is supposed that the fecundated Ovulum entered the womb, (from the circumstance of the placenta being implanted in that quarter,) we find not only a scar still red on the surface of the ovarium, but corresponding with it, and beneath it, in the thickness of the ovarium, a large shallow depression or hollow from which the Ovulum had escaped, and which is beginning to fill with the substance that is to constitute the corpus luteum destined to stop up the gap in the ovarium.