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UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 704 
Ceniribution from the Bureau of Public Roads 
LOGAN WALLER PAGE, Director 
Washington, D. C. PROFESSIONAL PAPER August 30,1918 
TYPICAL SPECIFICATIONS FOR NON- 
BITUMINOUS ROAD MATERIALS ~ 
By 
_ PREVOST HUBBARD, Chemical Engineer, and 
FRANK H. JACKSON, JR., Assistant Testing Engineer 
CONTENTS 
Introduction 
Specifications 
Methods of Testing 27 | Detailed Table of Contents 
Index of Materials and Use 
WASHINGTON ) 
GOVERNMENT PRINTING OFFICE 
1918 | 
