[vanderleck] 



-BACTERIA OF FROZEN SOILS 



Experiment I. 

 Table la. 

 Field Manured and Plowed. 

 Average number of bacteria (in millions) per gram of soil at different depths. 



Experiment I. 



Table lb. 



Field Manured and Plowed. 



Average number of bacteria (in millions) per gram of soil at different depths 

 on different media. 



