THE BOSTON TERRIER 109 



sistently sires pups whose colors are indistinct 

 and run together, as it were. 



Remember, in closing this chapter, that as 

 "eternal vigilance is the price of liberty," so the 

 eternal admixtures of colors is the price of rich 

 brindles. If one has the time the works of an 

 Austrian monk named Mendel are of great in- 

 terest as bearing somewhat on this subject, and 

 the two English naturalists, Messrs. Everett and 

 J. G. Millais, whose writings contain the result 

 of extensive scientific experiments on dogs and 

 game birds, are of absorbing interest also. 



