324 



EVOLUTION OF THE HORSE. 



ancestors of the horse had, on each foot, three toes^ two of 

 which were more or less rudimentary ; we have the still 

 stronger evidence afforded by fossils of horse-like animals 



Fig. 187. — Left Fore 

 Foot of H. Gracile 

 (ith real height). 



Figs. 188 AND 189. — Left 1-oi;i: /vnd Kicnr Hi-xn 

 Foot of same H. Gracile (-^th real height). 



{^Hippai'ion, see Fig. 186), whose feet were in this condition 

 {see Figs. 187, 188, 189 and 190). Figs. 191 and 192 give 

 front views of the horse's foot. Sir William Flower points 

 out that the European representative {Hipparion gracile) of 



