Bui. 1291, U. S. Dept. of Agr 
Plate IV 
Fig. I. — Aspen on Site Quality 3, at the Lower Limit of the Type 
Where it Breaks into an Oak Brush-Sagebrush Mixture 
About 50 years old and 30 feet tall 
Fig. 2. — Aspen on Site Quality 5, on a Thin Rocky Soil 
The stand is 40 years old and about 20 feet tall 
