SPALDING 
PLATE 1 
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The Tumamoc Hills from the south. Tumamoc Hill, on which the Desert Laboratory 
stands, on the left, connected by a ridge with Sentinel Hill on the nght. Santa Catalina 
Mountains in background. 
DSTI AE 

East side of Tumamoc Hill looking north; flood-plain of Santa Cruz River at right. In the 
foreground a heavy growth of Encelia farinosa, with other charactenistic vegetation. 
CAMPBELL ART CO., ELIZABETH, N. J. 
