^Ca--' 



Fig. 5. — Map of North America, showing the original distribution of the Bison (lightly 

 shaded), the range of the same animal after the completion of the Union Pacific 

 Railroad (darkly shaded), and the present range in Yellowstone Park (black). 

 (Reproduced with Dr. Hornaday's permission.) 



\_Toface p. 65. 



