34 



Journal of Agricultural Research 



Vol. XV, No. I 



since this appears to be the only animal known to four generations 

 which could transmit this white to Flying Fox's Flora. Tennessee's 

 Landseer, Fauntleroy, and Buna's First have white marks on the flanks. 

 In connection with the development of the separate factor argument 

 for the individual white spot, the animals Bangor Maid, Boyle, and 

 Sarabond are of interest. 



MARKINGS OP THE FLANK 



Markings on the flanks of dairy cattle generally consist rather of 

 extension areas from the white on the legs than they do of definitely 

 centered spots. However, from the evidence brought forward by 

 Allen (j) it would appear that this is a definite area. It consequently 

 will be treated as such. Table XVII gives such treatment of the paren- 

 tal and Fj generation. 



Table XVII. — Behavior of the white markings on the flanks in the parental and first 



filial generation 



Sire. 



Taurus Creamelle Henger- 

 veld. 



Do 



Do 



Do 



Kayan 



Do 



Lakeland 's Poet 



Do 



Minor crosses: 



Crossbred o 



Do 



Do 



Crossbred lo 



Lady Primrose's Governor 



of the Fountain. 

 Johanna Lad Manor de Kol 

 Columbia 's Fox 



Description of mating. 



Spotted left flank X solid 



color. 



Spotted X spotted 



Spotted X Fi solid color 



carrying spotted. 



Spotted X Fi spotted 



Solid color X solid color. . 

 Solid color X spotted 



flanks. 

 Solid color X spotted 



flanks. 

 Solid color X solid color. . 



Fj solid color carrying 

 spotted flanks X Fj spot- 

 ted flank. 



Fj solid color carrying 

 spotted flanks X solid. 



Fj solid color carrying 

 spotted flanks X Fi 

 spotted flanks carrying 

 solid color. 



Fj solid color carrying 

 spotted flanks X spot- 

 ted flanks. 



Spotted flanks X solid 



color. 

 do 



Solid color X solid color. 



Offspring. 



3 spotted, lo solid color. 



I solid color. 



1 spotted. 



Do. 

 9 solid color. 

 13 solid color. 



2 solid, I left flank spotted. 



3 solid color. 



2 spotted flanks. 



2 solid color. 

 I solid color. 



Do. 



Do. 



I spotted right flank. 

 I solid color. 



Here, again, the white areas are generally suppressed in the offspring 

 when an animal bearing them is crossed to a soHd-color animal. There 

 are six cases apparently at variance with this conclusion. Five of them 

 may be easily seen by their pedigrees to have had an animal carrying the 

 mark so close that either the aberrant parent would be heterozygous or 

 else had an even chance for a single dose of the factor. Of the four 



