The Cloud-Capped Co7itiiiental Divide . . 144 



Ptarmigan .158 



Summer at an Altitude of 12,000 Feet . . 178 

 A Typical Lodge-Pole Forest . . . . 1 84 



Aspens 204 



A Grove of Silver Spruce ..... 208 

 Ouray, Colorado, a Typical Mitiing Town . . 218 

 Estes Park and the Big Thompson River from the 



Top of Mt. Olympus 238 



In the Uncompahgre Mountains . . . 244 



A Grass-Plot among Engelmanii Spruce . .250 



