BUREAU OF SOILS. 



MILTON WHITNEY, Chief of Bureau. 

 ALBERT G. RICE, Chief Clerk. 



SCIENTIFIC STAFF. 



FRANK K. CAMERON, in charge of Physical and Chemical Investigations. 

 CURTIS F. MARBUT, in charge of Soil Survey. 

 OSWALD SCHREINER, in charge of Fertility Investigations. 

 W J McGEE, iu charge of Soil Water Investigations. 

 [Cir. 22] 

 2 



