S. C. Harland 1 1 1 



HolsU'in iMittom — tin- S*mIHI<« form (ty|M's e ami /' of Spillinun), utui 

 5 of tht' I^irj^' vyv spi»t.t4Hl ty|M». It will Ix' nrtj that, th*- SjuMU* lonn 

 Imni triu' while the I^ir^» vyv s|x)ttr<l pmvcMl to Ix* hrtcinzv^nHis. Id 

 m»j»i\»gatin^ fiiinilieH the ratio of // to A apiM'und to hr of tin- \'> : 1 

 ty|K\ 



4. Ni» fainiliej* wimh' ohtaiurd showin^^ tin- lu-havioiu nl the Small 

 eye fbnn in A*,. 



To sum up: on tJn' wholr. thr cvidriicr from this cross is in favour 

 of the view that it is of the nature W H, H. I>y w h, h... 



..... I . (Brown eye;. 

 Cross :\. Hed Solid by -1 , ,, ^ 

 •^ (Small eye. 



Thi* h\ of this er(»ss was Solid. In the F. scgretrat ioii oecurred into 

 Solid. Watsson, Holstein (Sad<IIe and Lir^^c rye s|M»ti<'d) and Small ey«'. 

 The results are presented in Table XII. 



The ratio of II' to ir w;vs a<(ain approxiujatdy .S — I. while the latio 

 of// t-o /* w;vs lOG to I(). From a pr<liminary surxcy of these figures 

 it seenus probable that the civkss is of the same type as Cross 2, i.e. 

 W H, H._. by w h, h... The ratio between the four types w;is near to 

 •io : 8 : 15 : 1. In the F^ a large number of familii's were grown from F, 

 Holstvins in order to obtain more exact figures as to the mimber of 

 types which were pure and heterozygous respectively. Broadl}- speaking 

 the Holsteins were classified into two groups, (a) the Large eye spotted 

 form, and {b) the Saddle form {e and/of Spillman). 



Of 106 Holsteins examined in F. ^)2 were; of the former and 54 were 

 of the latti'r ty|K'. 



The F, 



The /'.; residts ai-e pi-e.sented in Table XIII. Th<' main [joints are 

 as follows : 



1. The residts obtaim-d conform generally to tho.se of Cross 2. 



2. The families from F., Solids wei-e 2^^ in nundier. The number 

 of families which bred true, segregated into *S', If, //, and .S'A'. into 

 «S' an<l IF and into *S' and //, was again in accordance with the two 

 H faet^»r hviM>th<'sis, as will hv seen from the summarized lesulis IkIow. 



