U. S. DEPARTMENT OF AGRICULTURE. 



BUREAU OF SOILS— BIILTON WHITNEY, Chief. 



SOIL SURVEY OF 

 THE MIDDLE GILA VALLEY AREA, 



ARIZONA. 



BY 



E. C. ECKAIANN, In Charge, MAKK BALDWIN, and 

 E. J. CARPENTER. 



MACY H. LAPHAM, Inspector, Western Division. 



[Adyance Sheets — Field Operations of the Bureau of Soils, 1917.] 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1920. 



