168 



Bulletin No. 155.— 1913. 



Table 4.— Showing the results obtained in F2 from the mating of White Leg- 

 horn X Black Hamburg cross-breds (1912 series). 



It is further apparent in Table 4 that among the ''dark" birds, 

 the blacks (including the grays) and barred birds appeared in tlie 

 ratio 7 : 24. It should be said here, however, that several of tiie 

 chicks which are recorded as black were described when they WTre 

 in down-feather. It is certain that had they lived barring would 

 have appeared in some of them, and the ratio of barred to black 

 birds would have been changed somewhat in favor of the barred 

 group. 



There was a marked variation in the amount of barring present 

 in the barred individuals. The pattern invariably found clearest 

 expression in the hackle feathers, Aving coverts and tail coverts; the 

 primaries always showed a barring that was inferior to that of the 

 secondaries. It was also observed that the ground-color of the 

 feathers was not so light as in the case of feathers from a Barred 

 Plymouth Rock, but contained more gray or blue-gray, so that the 

 pattern was less distinct. But aside from these differences the type 

 of barred pattern observed in F2 differed in no important respect 



