F. A. E. Crew 163 



Spermatic tissues. 



1. Normal healthy spermatic tissue (represented as Sp. 1). 



2. Healthy spermatic tissue with ova and pi(,nnent included within 

 its structure. (Sp. 2.) 



Ovarian tissues. 



1. Normal healthy ovarian tissue. (Ov. 1.) 



2. Ovarian tissue in which a considerable proportion of the ova were 

 degenerate and in which there was overgrowth of the connective-tissue 

 and an increase of the pigment. (Ov. 2.) 



3. Ovarian tissue in which the degenerative changes were more 

 pronounced, the ova being all degenerate and the hyperplasia of the 

 connective-tissue and the density of the pigment being more marked. 

 (Ov. 3.) 



4. Ovarian tissue in the extreme stages of degeneration. No ova 

 remained and all that was left was a nodular mass of pigment and 

 fibrous tissue. (Ov. 4.) 



Using these grades, it is possible to arrange the cases as on p. 162. 



Reviewing only the cases of abnormality in Rana it is seen that 

 the various forms of ovarian and spermatic tissues furnish gonads as 

 follows : 



Case and gonad Totals 



