OF EVOLUTION. 



69 



animals. In the early cervine animals of the 

 Middle Miocene period, as has been so clearly 

 stated by Prof. Boyd Dawkins, the horn is a simple 



2. 



4- 



Stages in the geological development of the deer's antler. 

 1 (Dicrocerus) , Miocene ; 2, Upper Miocene ; 3, Pliocene ; 

 4, 5 (5, Cervus Sedgwickii], Newer Pliocene. 



forked crown; in the Upper Miocene it becomes 

 more complex, but is still small and erect, as in 

 the roe ; in the Pliocene it becomes larger and 



