150 



GEORGE W. CORNER 



ing from 3.5 to 6.5 mm. when not distended by hemorrhage. 

 Most frequently the ruptured follicles are ovoid in form, about 

 4x4x5 to 5x5x6 mm. in diameter. Owing to the collapse of 

 the follicle and to the contraction of the theca externa, the inner 

 walls of the cavity are no longer smooth, but are thrown into 

 folds whose complexity varies from that of low ridges in those 



Point of rupture 



Cavity of 



corpus luteu 



Unripe 



? 



follicle _aR| 





Theca externa 



~s Theca interna 



Granulosa 



Theca externa in N^ 



interior of cavity 





0edematou6 spaces in theca mterr\a 



Fig. 9 Diagram of ruptured Graafian follicle (sow in heat, ova in tubes), 

 illustrating complete collapse with much infolding of walls. X 14. (Compare 

 with figure 8.) 



follicles where much follicular fluid still lingers (fig. 8) to elab- 

 orately interwoven folds such as those shown in figure 9. 



Microscopically, the follicular wall is found to consist of the 

 same layers as before rupture (fig. 10). There is no sign of any 

 degeneration of the granulosa, which is now somewhat thicker, 



