THE RELATION BETWEEN AM1TOSIS AND MITOSIS. 



IOI 



d 



FIG. 5. 



mostly in other sections. On the right is a typical case of 

 mitosis in late anaphase ; this is the earliest case of mitosis seen 

 in the ovary ; c is a very distinct case of amitosis, b is a second 

 case. The smaller nuclei also show two cases of amitosis. 

 Whenever mitosis occurs in the developing ovary other nuclei 

 dividing amitotically are found near it. 



V. GROWTH OF THE OVARY. 



The further development of the ovary consists in increase in 

 size of the proliferating area and a little later the outgrowth 

 from its margins of finger-like follicles which elongate and give 

 the ovary its characteristic form. A follicular membrane differ- 

 entiates, apparently from the cytoplasm of the cells about the 

 periphery of the proliferating region, thus separating the ovary 

 from the general parenchyma. Fig. 6 shows a stage in the 

 later development of the ovary in which the follicles have attained 

 almost complete development. 



