FIG 36 



FIG 3 7 



\ 



c. 



FIG 3 9 



Fig. 36. — An imperfectly rough guinea-pig. Produced by mating 

 the guinea-pig, shown in Fig. 32, with a particular smooth animal; 

 female, 2005. 



FiQ. 37. — A silvered guinea-pig. One in whose coat occur white 

 hairs interspersed with pigmented ones. The amount of the silver- 



