1913] Grinnellr-Swarth : Birds and Mammals of San Jacinto 203 



Dos Palmos Spring, Carrizo Creek, circles the western base of 

 this mountain, the rocky formation here once more forcing the 

 water to the surface. 



About three miles west of the spring lies the tremendous 

 gorge of Deep Canon, the walls of which drop from the sur- 

 rounding mesa to a depth of from five hundred to a thousand 

 feet, and so abruptly that from a distance of a few hundred 

 yards on the plain above, there is little or no indication of the 

 break in the topography. Throughout most of the year there is 

 a fairly large stream in the canon, but no grass or underbrush. 

 A few solitary cottonwoods and ash trees are scattered along 

 flic creek. 



This region was reached from Kenworthy by means of pack 

 animals. Camps were established here from May 25 to June 2, 

 June 18 to 23, and August 22 to 27. Heavy rains fell in the 

 interval between our second and third visit, swelling the stream 

 in Deep Canon and bringing up an abundance <»f bunch grass 

 everywhere on the mesa. 



Palm Canon 



Palm Canon extends for its entire length, some twelve or 

 thirteen miles, along the eastern base of the San Jacinto Moun- 

 tains, serving as the dividing line between that range and the 

 Santa Rosa Mountains. The canon is broad and open, affording 

 little shelter from the hot glare of the desert sun, and the 

 stream of water it contains is unpleasantly warm and brackish. 



Between June 11 and 18 three camps were established in this 

 region : at the mouth of the canon (about 700 feet altitude), near 

 "Little Paradise" (2500 feet), and at about 3000 feet. Our 

 reconnoiters did not include a stretch of about five miles imme- 

 diately below the head of the canon at Vandeventer Flat. 



The most conspicuous feature of the country at our lowest 

 camp was the forest of Washington palms (see pi. 9, fig. 2), which 

 extends in a narrow line along the stream, from the mouth of the 

 canon (700 feet) up to about 1000 feet. There was almost a 

 swamp of cat-tails and willows along the stream, while the banks 

 and nearby hillsides were covered with dense thickets of mesquite, 



