THE ANCESTORS OF THE HORSE 



in the complex pattern of his teeth. But 

 immense numbers of extinct horses and horse- 

 hke creatures have been dug up, and we now 

 know quite clearly all the stages leading from 

 living horses back to four-toed and ultimately 

 to five-toed ancestors. First of all I will put 



^ 



Fig. 90. — Photograph of a model of a thoroughbred English 

 horse, by Vashtag ; one of a series in the Natural History 

 Museum. 



before you a photograph of a very beautiful 

 model of an English thoroughbred (Fig. 90). 

 There are a set of these models, both of horses 

 and cattle, in the Natural History Museum : 

 each is carefully modelled to one-fourth the 



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