POULTRY NOTES — 1909. II5 



1. The barred color pattern is found to be inherited in a 

 sex-limited fashion, equivalent to a phenomenon of segrega- 

 tion in the F^ generation. 



2. The percentage fertility of eggs is found to be much 

 higher when the cross is made in one direction (B. P. R. (^ x 

 C. I. G. 2) than in the reciprocal. 



3. The hatching quality of the fertile eggs is not found to 

 be greatly diiTerent in the cross and its reciprocal. In both 

 cases, however, the hybrid matings gave a much higher average 

 percentage of fertile eggs hatched than did the pure matings. 



4. Study of the sex ratios indicates that proportionally more 

 males were produced among the hybrid chicks than among those 

 from pure matings. The difference in the sex ratios cannot, 

 however, be regarded as significant in comparison with their 

 probable errors. 



5. The mortality records show that the percentage mortal- 

 ity of hybrid chicks from Cornish mothers was about the same 

 as that of pure Cornish chicks. Similarly the percentage mor- 

 tality of hybrid chicks from Barred Rock mothers was about 

 the same as that of pure Barred Rock chicks. The percentage 

 miOrtality of all chicks whether hybrid or pure from Cornish 

 mothers was somewhat greater than that of all chicks of corre- 

 sponding matings from Barred Rock mothers. 



6. The hybrid pullets fall into two distinct classes in regard 

 to winter egg production according to the direction of the cross, 

 rjybrid pullets from Game mothers are relatively good layers. 

 Whereas hybrid pullets from Barred Rock mothers are rela- 

 tively poor layers. A Mendelian discussion of this result is 

 given. 



7. Shank and beak color are shown to be inherited in a sex- 

 limited fashion as is the barred color pattern. 



8. The down color of the chicks is different in the F^ 

 hybrids from what it is in either of the pure breeds crossed. 



9. Dominance of pea comb over single is found to be far 

 from perfect. The hybrids show a perfectly graded series of 

 comb types ranging from the perfect single to the perfect pea 

 condition. 



TO. In shape of body the hybrid males are essentially like 

 the pure Cornish Indian Game males. The hybrid females are 

 intermediate in shape of body between the females of the two 

 pure breeds crossed. 



