Fig. 280. 



Figs. 277, 278, 279, and 280. From sections of cat's ovary, showing ova and 

 follicles in different stages of development ; X 22 5 : a i a i a t a > Germinal spots ; />, b, b, 6, 

 germinal vesicles ; c, f, c, c, ova ; </, </, d, zonx pellucidse ; e, e, e, e, corona radiata ; 

 f,f, f,f, thecse folliculorum ; g, beginning of formation of the cavity of the follicle. 



348 



