THE AMERICAN BOTANIST 45 



eat. After an extended search I found, late in the evening, a 

 narrow ledge where a layer of harder rock forces an under- 

 ground streamlet to come to the surface for a few feet. It is 

 so well concealed in a small and almost perpendicular cleft in 

 the mountain that we have since referred to it as Hidden 

 Spring. Climbing up through this cleft the next day we found 

 ourselves at the western end of Lookout Ridge and not far 

 from the summit. There are, of course, no springs on the 

 summit and the discovery of this spring will make it possible 

 to camp there in future without carrying water for a long 

 distance. To reach the spring from the forest area at the 

 western end of the ridge, one descends nearly to the base of 

 the talus slope and takes the first sharp ravine on the left. The 

 water is almost at the head of this ravine. We later visited 

 the spring from Lookout Ridge when I found, growing on the 

 rock above the spring, a Henchera new to science. 



Rdd Lake. 



A long run from Kaibato or Tuba over bare rocks and 

 traveling sand dunes brings one to Red Lake. There is a 

 single house at Red Lake, perched on the top of a sandy hill 

 and overlooking much dune country. The lake is a "playa 

 lake" and visible during the wetter part of the year only. At 

 the time of our second visit, the water was several feet deep 

 in the lake and alive with water birds whose indifference to 

 human kind was doubtless due to their unfamiliarity with 

 them. On the sand dunes grew gilias, pentstemons, abronias 

 and the like, and near the lake was a species of buttercup ! An 

 apparently new species of Astragalus wes secured here. A 

 striking feature of the Red Lake landscape was the hemi- 

 spherical clumps of Chrysothamnns which catch and hold the 

 sand in tinv hillocks. 



