T. H. MORGAN 



PLATE 6 



Hackle 



Bow 





la 



Back 



la 





Crop 



Saddle 



la 



Back 



Saddle 



Bow 



V a 



Z a 



JULIUS BIEN, N.Y. 



Feathers of "light" colored Sebright (1, '2) that changed to cock-feathers 

 after castration ( l a , 2 a ). 



