BULLETIN No. 18. 
ees PE RPAR EMENT OF AGRICULTURE, 
DIVISION OF FORESTRY. . 
EXPERIMENTAL TREE PLANTING 
IN THE PLAINS. 
BY 
CLEAR ES A. KEEFER, 
Assistant Chief of the Division. 
PREPARED UNDER THE DIRECTION OF B. E. FERNOW, 
COTEE OF THE DIVISION OF FORESTRY. 
WASHINGTON : 
GOVERNMENT PRINTING OFFICE, 
SIRO) coher 
