6o 



MOSTLY MAMMALS 



It was doubtless assumed that, had the experiment been 

 extended over a longer period, the white would have 

 gradually extended downwards till the whole hair became 

 blanched. But had this 

 the change from a black 

 it is obvious that animals 

 in which the coat is in I 

 lemming. So far, howeve 

 dition has ever been desc 



Moreover, it is perfect! 

 those which turn white 

 animals have a winter cc 

 as well as in length, from 

 for instance, is of a brilli; 

 winter it is grey-fawn wit 

 the buttocks. And it is 

 red to grey, and the deve 

 is due to the shedding of 

 replacement by the longer 

 fore, it is natural to expe 

 takes place in the case oi 

 winter. 



That the change in spr 

 is due to a shedding of 

 all hands, for it would o 

 long hairs to become s 

 brown. And even in ai 

 colour in any very markec 

 spring change of coat i 

 winter coat, owing to the long time it is carried and the 

 inclemency of the season when it is in use, becomes much 

 faded and worn by the time spring comes, and the con- 

 trast between it and the fresh and brilliant summer coat 



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