Teachings of Thomas Huxley 19 



second, the Pliohippus or horse of the Ameri- 

 can Pliocene epoch; third, the Protohippus; 

 fourth, the Miohippus, which corresponds quite 

 closely to the European Anchitherium ; and 

 fifth, the Orohippus from the Eocene epoch, 

 the oldest known member of the equine series. 

 It is unnecessary to go into the osteological 

 differences of these types, suffice it to say that 

 they form a distinct and connected series from 

 the four-toed Orohippus to the one-toed type 

 which we in these days know as a very useful 

 and trusted friend. "It has become evident," 

 says Huxley, "that, so far as our present knowl- 

 edge extends, the history of the horse-type is 

 exactly and precisely that which could have 

 been predicted from a knowledge of the prin- 

 ciples of evolution. And the knowledge we 

 now possess justifies us completely in the an- 

 ticipation, that when the still lower Eocene de- 

 posits and those which belong to the Cretaceous 

 epoch have yielded up their remains we shall 

 finally come to the five-toed animals in which, 

 if the doctrine of evolution is well founded, 

 the whole series must have had its origin." 



CONCERNING MR. DARWIN's HYPOTHESIS. 



One of Professor Huxley's characteristics 

 was his honest desire for truth apart from any 

 feelings of sentiment or friendship. In the 

 light of this fact it became somewhat difficult 



