EFFECTS OF CASTRATION OF HEN-FEATHERED CAMPINES. 243 



piece of the testis has been left, to the influence of a secretion 

 other than that produced by the luteal cells." 



An adult cock of the stock from which my young males came 

 is photographed in Fig. 8, A. For comparison I have introduced 

 a figure of a Campine female from Wright's " New Book oi 

 Poultry" Fig. 8, B. Except for the neck feathers, the plumage 

 of these two birds is barred throughout. The peculiarities of the 

 barring in different regions can best be seen in the single feathers 

 (Fig. 3, a-d). 



The tail coverts of the hen-feathered cock are barred and 

 longer than those of the hen. In this breed these feathers are 





FIG. 10. Four feathers from back of a hen-feathered Campine cock of another 

 flock. Three of the feathers show indications of cock-feathering. 



not so much kept down as they are in the Sebright. The saddle 

 feathers of the hen-feathered male are also fairly long, but broad 

 and rounded at the end and are without hackles. The shoulder 

 and wing bow are barred and without hackles. 



The cock-feathered Campine male is shown in Fig. 9, from 

 Wright's book. The long white neck feathers, the white back 

 and rump feathers (both kinds pointed and with hackles), the 

 black tail coverts, and the white shoulder are points in which the 

 cock-feathered differs from the hen-feathered bird, and are 

 exactly the same features that appear when the hen-feathered 

 male is castrated. 



GENERAL CONCLUSIONS. 



It has been shown in the Sebright that hen-feathering is in- 

 herited. When crossed to a cock-feathered race (Game Ban- 

 tams) all F i birds are hen-feathered, though some of them not 



