PLATE 2 



Representative plates from i to 400,000 bacterial dilution of acid whitish silt loam 

 and acid brown silt loam cropped and held under optimum moistiu-e conditions: 



A. — Aerobic plates, acid whitish silt loam, tmtreated. 



B. — Aerobic plates, acid whitish silt loam, treated with 3 tons of calcium carbonate. 



C. — Aerobic plates, acid whitish silt loam, treated with 500 pounds of acid phos- 

 phate. 



D. — ^Aerobic plates, acid brown silt loam, untreated. 



E. — Aerobic plates, acid brown silt loam, treated with 3 tons of calcium carbonate. 



F. — Aerobic plates, acid brown silt loam, treated with 500 poimds of acid phosphate. 



G. — ^Anaerobic plates, acid brouTi silt loam, im treated. 



H. — Anaerobic plates, acid brown silt loam, treated with 3 tons of calcium carlxtnate. 



I. — Anaerobic plates, acid brown silt loam, treated with 500 poxmds of acid phos- 

 phate. 



