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A Study of the Vegetation of 



and wilting coefficient, that they are considered in connection 

 with the plant communities which they support. 



TOPOGRAPHY AND DRAINAGE 



Viewed from the top of a bordering mountain, or, better, from 

 the summit of an isolated butte, the surrounding plateau looks 



FIG. i. Map of southeastern Washington and adjacent Idaho. The shaded 

 areas indicate coniferous woodland. Most of the outlying timbered areas are 

 characterized by yellow pine. West of the dotted line and in the canyon 

 of Snake River much of the area is characterized by scab-land covered 

 with sagebrush or bunch-grass. 



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