126 



THE GUIDE TO NATURE. 



"WE SPENT SEVERAL MONTHS WITH OUR HORSES, WAGON AND TENT" 



horn. While farther back in the roof 

 and floor of the mouth are great maga- 

 zines holding 2,000 teeth. The cutting 

 edges of these teeth are arranged like 

 a pair of scissors on each side of the 

 mouth, and as the duck-bill crops the 



rank vegetation they are cut by the 

 teeth behind, as an old-fashioned straw 

 cutter used to cut the straw pushed 

 through it. But the huge lizard, for it 

 is a lizard, is hungry, so resting with 

 his hind limbs planted firmly on the 



A ELOCK OF SHEEP ON GREASEWOOD CREEK, CONVERSE COUNTY, WYOMING 



Photograph by Geo. F. Sternberg. 



