BIwACK COCHIN AND RUMPI.ESS GAME. 



63 



Beak Color. — In the hybrids the beak is sometimes yellow, sometimes 

 black, sometimes black-and-yellovv streaked. 



Uropygium. — Of 24 hybrids the uropygium is normal in 23 (fig. 47). 

 One chick taken from the egg is recorded as without tail, though tail gland 

 is present. It is doubtful if much stress may be laid on this record, as the 

 uropygium is always ver}' small in the unhatched bird. We may exclude it 

 from present consideration. This whole result was unexpected because 

 opposed to the earlier observations. It leads to the provisional hypothesis 

 that rumplessness is recessive in my strain. If full tail is recessive, then in 

 my strain the recessive condition is prepotent. Further discussion must be 

 deferred until the second hybrids have been bred. 



Foot Color. — This was 3'ellow in about half of the cases and willow or 

 dark in the other half. Recalling that the White Leghorn is heterozygous, 

 the result favors the hypothesis that yellow is dominant over willow. 



CONCLUSIONS. 



White plumage color seems to be dominant over game color. The hy- 

 potheses seem to be warranted that yellow beak and foot color are dominant, 

 and that rumplessness is recessive in this strain. 



Series XIII,— Black Cochin Bantam and Black Breasted Red Rumpless Game. 



STATEMENT OF PROBLEM. 



This cross was primarily to test the inheritance of rumplessness, and 

 secondarily of black against red plumage color. 



THE RACES AS A WHOLE. 



Concerning the Rumpless Game see page 61. The Black Cochins are 

 discussed at page 39. 



TABLE OF CHARACTERISTICS. 



MATERIAL. 



Mothers. — The Black Cochin Bantams Nos. 129 (fig. 26), 130, 131, and 

 132 were the same as those referred to at page 39. 

 Father. — The Rumpless Game is No. 117, referred to at page 62 (fig. 46). 



