A FIVE-TOED HORSE. }3 



sometimes have two, three, or four, as the case may 

 be. In some, as in the tapirs, there are four toes on 

 the front feet and only three on the hind limbs. 



A comparison of the hand of man with that of the 

 horse seems quite absurd, and yet it becomes simple 

 and intelligible when systematically carried out. The 



ELBOW, NEAR FORE- LEG (SEEN FROM LEFT SIDE). 



reader must carefully keep in mind the fact that the 

 so-called knee of the horse is really the wrist, and 

 that the rest of the limb is really the modified hand. 



The earliest horse known to geologists had five 

 toes or fingers. It was quite a little creature, scarcely 

 larger than an ordinary terrier dog. Then there 

 came an animal in which the characteristics of the 



