STUDIES ON THE CILIARY MOVEMENTS OF THE OVIDUCT

抄録

1. A reverse ciliary movement beating towards the cranial end of the oviduct was noticed on both the frog and the tortoise. In the frog, it exists on the fixed side with mesotubarium of the oviduct and occupies about 1/4 of the whole width of the inner surface. In the tortoise, it exists on a narrow zone corresponding with the line fixed with mesotubarium and on its opposite side.
2. The rate of the descending current was about two times faster than that of the ascending. The mean rates of locomotion of egg, erythrocyte and charcoal powder were 12-6.5mm. per minute in descending and 4.0-6.6mm. per minute in ascending on the frog, while they were ten times slower on the tortoise
3. The ascending current puts the egg in a continuous rotation and may serve in its uniform coating with egg-jelly.