340 CAVE MEN. 



phenomenon. Nor, if we look at the question from a sci- 

 entific point of view, is there anything in this that ought to 

 excite our astonishment. Since the period at which these 

 caves were filled up, the changes which have taken place 

 have resulted rather in the extinction than in the creation of 

 species. The stag, the horse, the boar, the dog, in short, all 

 our existing forms of mammalia, were already in existence ; 

 and there would have been in reality more just cause for 

 surprise if man alone had been unrepresented. 



