Abstract
In the series of the studies on the physiology of ascaris eggs, here the cytoand histochemical observations of their oögenesis and egg-shell formation were carried out. On the histological as well as gross structures of the female reproductive organ of ascaris, only few works were available (Ida, 1930; Suzuki, 1938; Murata, 1950; Izumi, 1952; Yamaguchi, 1952) .
The object of this paper is to clear up the detailed structure of the whole female reproductive organ of pig ascaris.
