40 



Journal of Agricultural Research 



Vol. XV, No. 1 



From unpublished data collected by Dr. A. H. Sturtevant, of Columbia, 

 and the writer on horses it was shown that the frequency of white on a 

 given leg was markedly different. The order of appearance is left hind, 

 right hind, left fore, and right fore. This conclusion agrees with what 

 Brewer (u) had already published in 1882, unknown to us, as to the 

 frequency of these marks. It has seemed, therefore, that in this study 

 the individual leg markings should be treated separately (Table XXI), 



Table XXII. — Pedigree of Flora's Golden Poetess 



5S 



No. 65780. S 

 Mabel's Poet. 

 Some white on 

 brisket; speck 

 on left side of 

 belly and patch 

 on belly near 

 left flank; black 

 tongue and 

 switch. 



No. 195762. 9 

 Fontaine's Brown 



Daisy. 

 Solid color, black 

 ton sru e an d 

 switch. 



No. P. S. 2591. c? 



Caiest. 



White under chest; fore 



legs, switch white. 



No. P. S. 63 1 1. 9 



Mabel ssth. 

 Solid color, red muzzle. 



No. P. S. 2591. 

 Caiest. 

 See above. 



No. P. S. 6325. 9 



Browny's Beauty. 

 Tongue and switch 

 black. 



No. 2207. S. Fontaine's Kino. J 

 White on each stifle; tail and tongue 

 white. 



No. 3582. D. Oxford Lass. 9 



White across withers; tongue black; 

 tail white. 



No. 1559. S. Boyle. c? 



White spot on forehead; tail and 

 tongue white. 



No. 3213. D. Mabel 23D. 9 



Tongue and tail black; dappled on 

 chine. ^ 



No. 1690. S. Marion. c? 



Solid color, black tongue and switch. 



No. F. S. 7623. D. Beauty 



Browny. 

 Black points. 



o "> 



is cl 



Z.2 



N0.6476S. c? 



Flying Fox's 

 Victor. 

 Solid color, black 

 ton gue and 

 switch. 



No. 61441. c? 



Champion Fi,ying Fox. 



Solid color, except white 

 on brisket; white tip 

 to black tongue; black 

 switch. 



No. P. S. 2160. Golden Fern's d" 

 Lad. 

 Wliite spot on forehead and withers; 

 tongue and switch black. 



No. 149740. Sultana's Rosette. 9 

 Solid color, black tongue and switch. 



No. F. S. S801. 9 



Dulce of Oakland. 

 Solid color, black tongue 

 and switch. 



No. 



No. 



No. 173908. 9 

 Imp. Lady Grandi 



flora. 

 Spot on left hip; 

 white on right 

 stifle and hind 

 fetlocks; black 

 tongue and 

 switch. 



No. 52915. S 



Mona's Glory. 

 Solid color, black tongue 

 and switch. 



No. P. S. 1242. Golden Lad. S 

 Solid color, tongue and switch black. 



No. P. S. 3983. MoNA 8th. 9 



Spots in forehead; tail white; white 

 patch on each stifle. 



No. 165772. 9 



Lady Grandiflora. 

 Solid color , black tongue 

 and switch. 



No. 1242. Golden L.'vd. _ <S 



Solid color, black tongue and switch. 



No. F. S. 6407. Gr.\ndiflora. 9 

 Solid color, tail and tongue black. 



The general conclusion is that these white areas are generally sup- 

 pressed in the offspring when the animal bearing them is crossed to a 

 solid-color animal. Should this be interpreted as being due to a single 

 recessive factor, several of the experimental animals have white markings 

 against this interpretation. Two of these animals are anomolous to this 

 in every foot. These are Crossbreds 1 1 and 35. Study of the pedigree 

 of Lakeland's Poet, the sire of these animals, shows that he had a good 



