PRJEVALSKY'S HORSE. 



645 



almost white on the underneath surface of the trunk. 

 With advancing years, this change of colour becomes less 

 marked. The summer hair of the coat is smooth, and is 

 much shorter than the hair in winter. It is of a dun colour 

 on the back and on the upper sides of the body ; but, on 

 proceeding downwards, it gradually becomes lighter, until 

 it reaches the lower part of the trunk, where it is of a cream 

 colour. In this lack of uniformity of colour, which some- 

 times occurs in the domestic horse (p. 332), there is no 



Photo hy] [O. A. EWAKT. 



Fig. 610. — Professor Ewart's 2h year-old Prjevalsky's horse 



in winter coat. 



comparatively sharp line of demarcation, as in the 

 domestic ass (Fig. 397). The hair of the neck and the 

 part of the head which is above the nostrils, is of the 

 same colour as that of the back. The muzzle and lips are 

 white, and the inner surface of the ears is covered with 

 white hair. The hair of the legs becomes darker on 

 approaching the fetlocks and pasterns, both of which are 

 more or less black. The shade of the dun colour of the 

 coat is by no means uniform. The colour, length and 



