Bui 
249, U. S. Dept of Agriculture. 
Plate V. 
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Fig. 1 .—Bituminous Wearing Surface in Fair Condition After About One 
Year's Service. 
Fig. 2.— Showing Unsatisfactory Condition of Bituminous Wearing Surface 
After Less than One Year's Service. 
EXPERIMENTAL CONCRETE ROAD, CHEVY CHASE, MD. 
