Bui. 49, Bureau of Forestry, U. S. Dept. of AgriculU 



PLATE III. 



FIG. 1. VIEW IN A CEDAR BRAKE. 



The adobe soil and rocks are covered with a thin layer of brown soil and forest dC'bris, showing 

 capacity of cedar to accumulate soil even on the arid slopes of crumbly limestone. 



FIG. 2. CHARACTERISTIC OCCURRENCE OF CEDAR UPON A STEEP SLOPE COVERED BY 

 LOOSE LIMESTONE TALUS, UPON WHICH MOST VEGETATION is UNABLE TO ESTABLISH 

 ITSELF. 



JJrv bed of Bull Creek. 



