Dec. 
Auc. Sept. Oct Nov. 
Jury 
CARBON DIOXIDE IN THE SOIL ATMOSPHERE AT PUSA. 
June 
Marcw Aprit May 
FEB. 
JAN. 
Sea ts (Sign OD Ge SSO FF SH SF AR TS 
“3SWNIO0A AG “99 IN39Y3q 
Grassed down 
Grassed down but partially 
PLATE I. 
ee ew ee ee ee ee 
aerated by trenches 
Surface cultivated 
