THE BOSTON TERRIER 107 



No. 6. Mouse color. Use same process as 

 for gray brindles. 



No. 7. Yellow. A very undesirable shade, 

 but easy to eliminate. Breed to mahogany brin- 

 dle dog as dark as can be obtained, and bitches 

 from this mating breed to a seal brindle dog. 



No. 8. Steel and tiger brindles I class to- 

 gether, as the process is the same and results 

 are easy. Breed first to a red brindle dog; 

 bitches from this union to a dark mahogany 

 brindle, and then use seal brindle dog on bitch 

 from last mating. 



No. 9. Red brindle. No skill is required here. 

 Breed first to mahogany brindles, and bitches 

 from this union to seal brindles. 



We have now enumerated practically all the 

 less desirable shades, but let me observe in 

 passing, in the process of color breeding that 

 the law of atavism, or "throwing back," often 

 asserts itself, and we shall see colors belonging 

 to a far-off ancestry occasionally presenting 

 themselves in all these matings. Once in a while 

 a dog will be found that no matter what color 

 bitches he may be mated with, he will mark a 

 certain number of the litter with the peculiar 

 color or markings of some remote ancestor. Just 

 a case apropos of this will suffice. We used in 

 our kennels a dog of perfect markings, coming 

 from an immediate ancestry of perfectly marked 



