THE 



AMERICAN NATURALIST 



Vol. XLVI January, 1912 No. 541 



TUN INIIKRITANOF OF COLOR IX SHORT 

 HORN CATTLE 



II. 



I n order to adduce further evidence bearing upon the 

 problem of the inheritance of color in cattle the foilow- 



sive whites in other animals ;ire reported. Many species 

 of animals have some strains with solid white coat, and 

 others with coats made up of both white and pigmented 

 areas. The white in such latter coats is always possessed 

 in a somewhat definitely arranged and progressive system 



the first of these areas until the entire ImI.I.v is covered. 

 Thus in the guinea pig the whitening process begins with 

 the underline and large " centripetal" body blotches and 

 spreads until the hair, skin and hody pigments are 

 entirely removed, the eye and the " rentri f'n-al " coat pig- 

 ments persisting the longest. En the domestic cat the 

 process begins with the anterior underline and collar, 

 from whirl, areas it spreads in large blotches. The 

 rabbit 's pigment areas behave similarly. With the parti 

 colored dog of any or no breed, the whitening process 

 begins with a white line down the middle of the face, a 



