SPALDING atte 
~~ 

Salt-spot in Salton Basin. Clumps of Allenrolfia near the center and masses of Alriplex 
nearer the margin, as seen at the left. This area, now covered by water, was photo- 
graphed before the last invasion of the Salton Sea. 

The wash northwest of Desert Laboratory. Lining its banks are Cercidium torreyanum, 
Acacia greggii, A. constricta, Prosopis velutina, and Celtis pallida. 
CAMPBELL ART CO., ELIZABETH, WN. J, 
