No. 639] INIIEEITANCE OF BLUE IN POULTRY 



321 



blue when received and showed some evidence of barring, 

 though this was not very distinct. Number 768 was much 

 lighter in shade than 767 and showed no evidence of bar- 

 ring. In contrast with ordinary blue she would, from a 

 little distance, be mistaken for a white. The pigment 

 granules in both cases were round. 



The results of mating these birds in various ways are 

 presented in Table VII. The numbers are rather small 



TABLE VII 



Showing the Breeding Behavior of Two Blue Leghorn Females, whex 

 Mated with Various Males of Known Factorial Compdsitiox 



but two facts .s.'cm fairly evident. First, that 767 and 

 768 are alike with respect to the factors under discussion 

 in this paper, and second, that they give no indication of 

 being different in their make-up with respect to the fac- 

 tors K and P from ]mn-])nMl ])iue Andahnians. 



The app.'.-ii-aiHM- of th.- l.hit' nff.priii- ..f 7(;s (which it 

 will hi- tvcnllcd \va< wry iiuhu \\\u-u mnlrd witli black 

 or blue Andahisian>, ua^ ^ich a^ to .nuu-t \\u- ].o<si- 

 bility that a<'cess()i'\ factor--, iipcr^-a ly for the pro.liic- 

 tion'of blue of normal ^li;idf. were Mippli.'d !>> th.' Anda- 



