84 J- M. ESSENBERG. 



PLATE IV. 



FIGS. 1724. Portions of transverse section of the epithelium of the ovarian 

 cavity showing transformation of epithelial cells into definitive germ cells. 

 X 1600. 



Symbols : 



a-f Various stages of transformation of epithelial cells into definitive 

 germ cells. 



oc Ovarian cavity. 



