THE 



AMERICAN NATURALIST 



Vol. LV. Juhj-Augmt, 1921 No. 



FUETHEE DATA ON THE INHEEITAXCE OF 

 BLUE IN POULTEYi 



PROFESSOR WILLIAM A. LIPPINCOTT 

 Kansas Agricultural Expkri.mext Statiox,, Maxhattax, Kaxsas 

 I. Previous Work 

 The principal facts concerning the genetic behavior of 

 blue in the Andalusian breed of domestic lowl were ])re- 

 sented in an earlier paper (Lippincott, ]!)1S(7). Pre- 

 vious work on tlie irenetics of the blue Aiulalusinii was 

 reviewed and a liiiiilcd minihcr ot tnrthcf data were 

 offered. 



The latfcr sliexvrd that hlu.' Andahisiaiis aiv like l.laek 

 Andalii^ai,. ni that tn, \ ai. Il , nh.n d Mux ai.. on 

 tlie other liaiid. like the hh.e-s| .h-i>hed A iida hisiaiis in that 

 h..m..N>uou-^ putn. iittd U ith iii hoth ^. \. ^ ha\( the 

 same eondition with refeivm'.^ In ilie rest riet in,, nf pig- 

 nu-iit ill thi" feather >1nictiiiv. The 1:1': 1 ratin nhtamnd 

 from iiiatino- hhie AiKhahisians In-ether iiiav he inter- 

 pi( ted a- thi (oinhiii itmn <.t tun \ tn 1 latin^ '1 h( -.e 

 relationships are sliowii iii fhir. 1. 



The restriction ol l)hack pmineiit iii the leather struc- 

 ture to give the l)hie appearance Inuiid iii hhi.' and in 

 blue .l)hi-hed AndahiMaii^ ^hnun tn h, dm tn the 



aetinii nf a dniniiiaiit faetnr Tile extension of black 

 pmiiieiit tn all feathers (»1 the l)nd\- as 111 hnth ])lack and 



