Photo bx Edtnund Heller. 



Fig. ICO. A rear guard of the buttalo herd crossing the Lamar Vallej- in winter. 

 The storm-swept heights of Specimen Ridge and the Fossil Forest beyond. 



Photo by Edmund Heller. 



Fig. loi. At the buffalo ranch in winter, where the "tame herd" now number- 

 ing about 600 is fed in immense corrals. In spring the herd is released and 

 disperses to its natural grazing range on the mountain slopes. 



