SHREVE 



Plate 25 



A. Looking toward south face of Mount Lemmon from crest of Marshall Gulch, near sitr of s.lioil 

 elimatological station. Pinus arizonica and scrul) of Qucrcu.s rvticulaln. 



B. Looking southwest into ALushall Gulch. The open area in the f 



/'n/iuhix tnmi/loidcs 



