108 DESCRIPTION OF PLATES. 



Plate 9. 



Figs. 1, 1a. Typical feathers of hackle and saddle from hen-feathered bird (No. 68) 



plate 3, figure 2, that changed over to the cock-feathered bird of plate 3, 

 figure 3. 



Figs. 2, 2a. Typical feathers of an Fi male (2) that changed over partly as a result of degen- 

 eration of his testes, into a cock-feathered bird (2a) . The change was not so 

 great as it is after castration. 



Figs. 3, 3a. Typical feathers of Sebright male that slightly changed towards cock-feathering 

 (old hackle feather missing). 



Plate 10. 



Figs. 1, 1a. Old (1) and new (1a) wing-coverts of normal Sebright (1) and castrated (1a). 

 Figs. 2a, 2b. Upper row, to right, "Transitional" hackle feathers (2a), and a slightly 



later changed-over feather from wing-bow (2a), and from back (2b). Second 



row, to left, old (2), transitional {2a), and changed-over feather (26), from 



saddle of Sebright. 

 Fig. 3. Three feathers (tail-covert, wing-bow, and saddle) of an F 2 hen-feathered game-like 



male. 

 Fig. 4. A series of breast feathers from an F 2 bird. At one end of the series (the left) the 



feather is spangled, at the other barred. 

 Fig. 5. A series of breast feathers from another F 2 bird. At one end of the series (the 



left) the feathers are penciled, at the other end they are barred. 



