Plate 



Stages in the development of the oocyte of Paluilina (after POPOFF, 1907). 

 <?. Zygotene stage of chromatin threads. 



b. Chromatin threads beginning to break up. 



c . The nucleus has reverted to a network with scattered chromatin. Production of 

 " chromidia " in preparation for deposition of yolk in cytoplasm *. 



d. Cytoplasmic growth and deposition of yolk. 



* The "chromidia" stain with osmic acid like Golgi apparatus, and are 

 probably of the same nature (PoPOFF). 



