Issued June 14, 1912. 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF SOILS CIRCULAR No. 66. 



MILTON WHITNEY, Chief of Bureau. 



CITY STREET SWEEPINGS 

 AS A FERTILIZER. 



BY 



J. J. SKINNER AND J. H. BEATTIE.. 



Scientists in Soil Fertility Investigations. 



WASHINGTON: 



"GOVERNMENT PRINTING OFFICE. 

 1912. 



