SHREVE 



Plate 25 



A. Looking toward .south face of Mount Lommon from crest of Marshall Gulch, near site of 8,000-foot 

 climatological station. Pinits arizonica and .scrub of Quercua reticulnta. 



B. Looking southwest into Marshall Gulch. The open area in the forest is a thicket of Populus tremuloides. 



