No. 639] INHEIUTAXCE OF BLUE IX T'OULTRY 293 



It was also shown that both the rest I'irt iiiii' and the 

 rounding actions of R witc iiitcrftTt'd with in certain 

 regions of both bhie-sphishcd and l)hn' iiiah's. In both 

 color types the pigmented feathn-s of rlic nct-k (hacklr), 

 back, and saddle are black or Idnish-hlack instead of hhie 

 as on the remainder of the body. 'I'hc lilack ])i<inn'nt 

 graimles in these regions are for the most part rod- 

 shai)rd rather than round. It was suggested thai this 

 interfereiiee with the action of R is a seeon.lary sexnal 

 characteristie, presumably due to the presence of tes- 

 ticular or the absence of ovarian influence. 



II. PUEPOSE OF THE PeESEXT PaPER 



It is the purpose of this ])ai)er to i)resent further data 

 concerning the inheritaiu-e of hhie and it> relation- to 

 the sex glands, and to drawsneh eoiiehision- a- :he-e (h-ita 

 justify. A report is giveji of the hre,Mliim- behavior of 



breed., aad of certain crosses of th'e>e bree.l> with each 

 other and with ..thei- l)reeds. which d.) not possess bhie 

 varieties. The r.'hation. .)f the factors involved to cer- 

 tain factors ])resent in the non-bine varieties of .ither 

 breeds i> consi(hMvd and evidence concerning the relation 

 of the sex-glands to the action of the factor H presented. 



III. MATKia.M. AXI. Mf-.TIICDS 



The breeding stock n>ed was from several sources, 

 being in part from the ]iedigreed Hock of the University 

 of Wisconsin, where the work reported in the earlier 

 paper was done. It Avas al>o in part fi-oni the pediui'eed 

 flock of Kansas State Auricultni'al ('i-lle-e where th.e in- 

 vestigation wascont inned under t he ,li rect ion of Dr. Leon 

 J. Cole of the University of \Viscon>in. my indebte.lness 

 to whom it is a pleasnre to acknowledge. The >tock was, 

 In.wever. mo>tlv from nnj.edi-reed lines, tlionuh pure- 

 bred within the meaning ..f the poultryman. In no cas.' 

 were individual. UM'd which were not from familie. >how- 



