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GUY C. ROBSON 



yolk content, usually with a clear slightly-granular 

 nucleus and a deeply-staining nucleolus. 



(b) Ovarian cells only distinguished from (a) by the less 



intense staining of the yolk and their smaller size. 



(c) Small cells of various sizes, free or attached to the epithe- 



lium of the follicles with darkly-staining cytoplasm, 

 clear nucleus, and dark nucleolus. 



Text-figs, 8-9. 



Fig. 8. — Female genitalia, a, ac- 

 cessory gland ; o, oviduct ; og, 

 oviducal gland ; rs, receptaculimi 

 semiiiis ; v, vagina. 



Fig. 9. — Section of oviducal 

 gland. 7n, outer muscular 

 layer ; (/, gland. 



(d) Cells of the germinal epithelium in various stages, either 

 very small and irregular or enlarged and approximating to (c). 



The germinal epithelium was never found in the regular 

 columnar condition seen in Bregenzer's figure U ; and it is 

 sometimes very difficult to interpret, being full of liiasses of 

 deeply-staining material of irregular disposition and uncertain 

 nature and often flattened out by the pressure of the ripening 

 oogonia. The various types of ovarian cell with all the inter- 

 mediate stages are frequently met with in one and the same 

 follicle, and the gradual transition seems to indicate the 



