174 



Bulletin No. 155. — 1913. 



From the data presented in Table 9 it is apparent that, as was the 

 case with the W. L. X B. H. and the W. L. X B. S. cross-breds, 

 here also we have both black and barred birds thrown out in F2. 

 But, whereas in the earlier matings the dark : light ratio came very 

 close to Mendehan expectations, in the present case the departure 

 is more noticeable. It is probable, however, that observation of a 

 larger number of birds would have yielded results closer to the 

 expected. 



The one barred bird resulting from this cross, 313 C, was a cf . Its 

 general coloration was gray but barring was well manifested in 

 feathers of the hackle and back and in the wing coverts. No barring 

 was present in the primaries but it could be distinguished faintly in 

 the secondaries. 



Case 3b. — [White Leghorn cf X Black Minorca 9 ] c^ X Black 

 Minorca 9. Nature of mating: CcBbffli X CCbbFfii. (For dis- 

 cussion, see p. 194). 



In addition to the foregoing, the results of a cross between an 

 Fi cf and pure-bred. Black Minorca 99 may be reported. The 

 cf 200 C as previously stated showed on the right flank a feather 

 barred over one-half. The B. M. 99 were those used in the Ft 

 matings. In Table 10 are presented the data relative to this back- 

 cross. 



Table 10. — Showing the results of the cross: [White Leghorn cf X Black 

 Minorca 9 ] cf X Black Minorca 9 . 



