44 THE AMERICAN BOTANIST 



nesting sites for the pink-sided snowbird which is abundant. 

 The crystal-clear waters of the spring have a temperature of 

 about 15° above the freezing point. Near the spring were 

 found a new gigantic evening primrose, an Briogomim, and 

 perhaps others new to science. 



Aspen Springs. 

 One never gets entirely used to the sharp transitions from 

 moist land to desert that occurs in this region. A few paces 

 from the rill that runs down from War God Spring, the 

 mountain sides are almost deserts. To find any spot moist 

 enough to support mesophytic plants is an event. Passing 

 around the mountain side to the north, however, at or above 

 the 8,000 level, one arrives, in the course of a mile or two, at 

 two tiny swamps not far separated and surrounded by dense 

 aspen thickets. Here is a section apparently from a New Eng- 

 land thicket. The plant population consists of dog-bane, 

 meadow rue, geraniums, Anaphalis, and similar plants, and in 

 drier spots, the bracken. 



Hidden Spring. 

 Passing over the summit from War God Spring, one 

 comes to a great ridge of rock fragments sloping down on the 

 north to cliffs so high that though one is safely seated on some 

 great rock, he instinctively grasps surrounding objects to avoid 

 falling into the tremendous gulf. This is Lookout Ridge. 

 One may here look straight down for nearlv two miles. To 

 the northwest, but apparently not far away, is the great bridge, 

 now dwarfed by the cliffs that rise about it. On foot, it is not 

 more than half a day's journey away, but on horseback the 

 trip requires two days. From tlic ridge one may walk back to 

 Endischc in five or six hours. On our way back from the 

 bridge on foot, our water supply gave out when we were on the 

 north side of the mountain and a long way from anything to 



