Constitution of the White Leghorn Breed. 



165 



Table 1. — Showing the results in Fi of crossing White Leghorn cf X Black 

 Hamburg 9 9 (1910 series.) 



♦Female not identified, but one or the other of the above. 



The data presented in Table 1 demonstrate that the white of the 

 W. L. in all instances dominated over the black of the B. H. The 

 progeny were not all pure w^hite, however, since more than one-half 

 of the Fi generation ( cf cf and 9 9 equally) showed black flecks 

 in the white feathers. When the chicks were in down-feather the 

 majority revealed one or more patches of black down on head, back 

 or sides. Table 1 also shows that of the 49 birds recorded, 4 possessed 

 one or more barred feathers, w^hich were usually located on the back 

 or among the wing coverts. In these cases the barring was usually 

 clear and definite, although the pattern never reached to the base of 

 the feather and frequently covered only the tip. No bird in Fi was 

 found to possess more than two or three such barred feathers. Of 

 the four birds so characterized, three were cf cf and one was a 9 * 

 In addition it should be noted that one bird showed a buff half-moon- 

 shaped splash at the tip of one of the saddle-feathers. 



Subsequent to making the series of crosses mentioned above, a 

 second series was obtained in 1911. In this case one of the two B. H. 

 99 was employed, but another W. L. d^ was used, and B. H. 99 

 from a different source were also introduced. The result of these 

 matings is shown in Table 2. 



2 



