THE EGG OF THE DOMESTIC CAT 



149 



approximate height of the folds into which the membran a pro- 

 pria is thrown. In other words, the section of the young corpus 

 luteum shows with variable distinctness the sinuous outline of 

 the membrana propria, following the curves of which, on the 

 inner side, there is a thin layer of granulosa cells. Often large 

 blood spaces occur in the apex of the folds of the membrana, 



Ex. 



'O/, 





(^ 



,A a if ' o *.o "• ^' ° ■ ?y/ \ ■;■■■■ ■■.. ■ — ~^i.° .",">» ' 



C.t. 



^.^d^^ 



( 



Fig. 2 Recently ruptured follicle, i.e., young corpus luteum. Semi-dia- 

 grammatic. B.S., blood space; C.t., connective tissue elements of theca interna 

 forming axis of fold; Ex., coagulum of extruded liquor folliculi; G.c, layer of 

 granulosa cells; S., free surface of the ovar3^ X 32. 



or in the cores of connective tissue, upon which depends the more 

 or less lobulated condition of the section of the corpus luteum 

 next older. This condition is shown in fig. 2. 



Fig. 7 shows the section of an egg which was found escaping 

 from the ovary. It will appear at once that in a number of details 



