No. 629] 



INHERITANCE OF WHITE SPOTTi: 



475 



(a.b.m.yY), there were produced a lined orange male 

 (B'M.Y) and a lined tortoiseshell female (B'.M.Yy)- 



When he was crossed (58) to a tortoiseshell female 

 (80) (a.B.M.Yy) he sired two ornii^v lined males 

 (B'.M.Y), one little-ticked, lined male (A.IV.NF.y), and 

 two lined females,— one tortoiseshell with so umch yellow 

 that degree of ticking could not be made out (B'.M.Yy), 

 and one non-yellow^ with so much white that degree of 

 ticking could not be made out (B'.M.y). 



The crosses of this Gaffer cat are reciprocal to those 

 summarized above, crosses of ''vellow" males ( VX — ) 

 by '^black" (yX yX) and by - to.loi>rsheir ' i VX yX) 

 females. Here we have a "black" male ( _\ X ) by '^yel- 

 low" females (YX YX) giving live •'yellou-" males 

 (YX -) and three "tortoiseshell" females (YX yX) and 

 a "l)laek" male (yX — ) by "tortoiseshell" females (YX 

 yX) gi\ ing three "l)laek" males (yX — ) and seven "yel- 

 low" males ( VX — ) and four "tortoiseshell" females 

 ( VX yX ) and three "black" females (yX yX). It may 

 l)e seen, therefore, that the principle of sex linkage a])- 

 plies in all these cases. 



The progeny of the ("affer cat (l'U ai-e of interest also 

 from the point of view of tickinu' and l)anilinu-. The es- 

 sential characteristic of ("affei- is the narrow !)ande(l or 

 "lined" condition. I^aiKhnm- of int.'rmediate width, 

 "striping," acts as a reces<i\c as iire\ i.)n>ly shown ami 

 the widest bands, "blotches." are rece>>i\-e to lioth 

 "lines" and "stripes." The i)ai-eiits ( is. lii) ,.f \\u< cat 

 were both lined, but ])ro.lnce(l bloti-he.l off^prin- a> well 

 as lined. Kvidentlv this cat i2]) is the honn.zy-on> seg- 

 regate, for twenty-foui- of ]ii> twmty-livc oflVprin- are 

 certainly lined and in the othei' (oi'.:'.) th.-re is >o mnch 



the fenialr> to 

 IV blotched, and 



