PLATE 9 



Representative plates from i to 40,000 bacterial dilution of acid dark-brown peat 

 kept at different moisture contents: 



Ap — Aerobic plates from soil kept one-fourth saturated. 



Hi. — Anaerobic plates from soil kept one-fourth saturated. 



Ci. — Aerobic plates of carbon-dioxid-siu-viving organisms from soil kept one-fourth 

 saturated. 



Aj. — Aerobic plates from soil kept one-half saturated. 



Hj. — Anaerobic plates from soil kept one-half saturated. 



Cj. — Aerobic plates of carbon-dioxid-surviving organisms from soil kept one-half 

 saturated. 



A3. — Aerobic plates from soil kept fully saturated. 



H3. — Anaerobic plates from soil kept fully saturated. 



C3. — Aerobic plates of carbon-dioxid-surviving organisms from soil kept fully 

 saturated. 



