EFFECTS OF LIGATING TESTES OF HEN-FEATHERED COCKS. 253 



is shown beside the other. As the change had not gone as far as 

 expected, had the ligation been entirely successful, 1 the bird was 

 opened on September 17. Its feathers at this time are shown in 

 Fig. 4, a 2 , lr, c~. Pieces of the testes were found present and an 

 attempt to remove them was made. During the winter the bird 

 showed somewhat further changes in his plumage as new feathers 

 developed. On March 13, 1920, he appeared as shown in Fig. 5. 

 The condition of his feathers is shown in Fig. 4, a 3 , b 3 , c z , d 3 . 



FIG. 8. Same bird as Fig. 6, November 15. 



These show that the change had gone much further, as the smaller 

 size of the comb would lead one to expect. He was killed on 

 March 17, and examined. On the left side there was a small 

 piece of testis about one fourth inch in diameter. On the right 

 side there was a chain of very small pieces of testis. The comb 

 measured two inches in length and one fourth inch in height. 

 The wattles measured three quarters of an inch in diameter. 



The third bird, (No. 270), was a rose comb, back-cross, hen- 

 feathered cockerel, a year old (Fig. 6). The bird looked some- 



1 The condition of the comb showed that some testicular tissue remained. 



