962 



Journal of Agricultural Research 



Vol. VI, No. 24 



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 « so 



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Fig. i. — Curves of the nitrate formation in soil of fertility plots at Columbia, Mo., in 1913-14, after 28 days' 

 incubation with the addition of 60 mgm. of nitrogen as cottonseed meal, but without the addition of 

 calcium carbonate. 



Table IV. — Ammonia and nitrate formation (in milligrams) in soil from different 

 fertility plots at Columbia, Mo., during 7 days' incubation without addition of calcium 

 carbonate 



■ T. = trace. 



