UNITED STATES DEPARTMENT OF AGRICULTURE 
BULLETIN No. 257 
Contribution from the Office of Public Roads 
LOGAN WALLER PAGE, Director 
Washington, D. C. PROFESSIONAL PAPER July 12, 1915. 
PROGRESS REPORTS OF EXPERIMENTS 
SOS ae 
IN oe T PREVENTION AND ROAD 
= =|PRESERVATION, 1914 
4 
<< 3 Fs 
raat 
: CONTENTS 
: jee 2 ‘ Page 
Eaerimeats at at a City, Fla. . . . 1 | Sepplementary Report of Experiment 
- Experiments.at_West Palm Beach, Fla. . Made at Boise, Idaho, 1910... .. 
Supplementary Report of Experiments at Sapplementary Report of Experiment 
Miami Bla Wis. 6 es 16 Made at Ames, Iewa,1910.... . 
Sisleniontary Report of Expetinents Supplementary Report of Experiments 
on Reckville Pike, Maryland,1913 . . Made at Knoxville, Tenn., 1910 . 
Supplementary Report of Experiments at Supplementary Report of Experiments 
Washington, D.C.,1912 . ... Made at Youngstown, Ohio, 1903 . . 
Supplementary Repert of me ernenis at Supylementary Report of Experiments 
Cirevy Chase, Md.,1912. ...,. Made at Newton, Mass.,1908 . . 
Supplementary Report of Experiments at Supplementary Report of Experiments 
Chevy Chase, Md., 1911 Project. . . Made at Garden City, Dodge City, 
Supplementary Report cf Experiments - - Bucklin, and Ford, Kans.,19@8 .. . 
Made at Jamaica, N.Y.,1911.... Supplementary Report of Experiment 
Supplementary Report of Experiments Made at Bowling Green, Ky., 1907. . 
Made at New York, N. Y., and Ridge- 
WOOGEIN esd DEO re nae eee ae 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
1915 
1h 
ie 
