SOME RELATIONS OF ORGANIC MATTER IN SOILS 25 
The crops in rotation with legumes removed more nitrogen 
from the soil than did the crops in rotation without legumes. 
The plats kept in grass lost less nitrogen in the crops than 
did the plats in rotation with legumes. 
There is a close relation between the organic carbon and 
the nitrogen. The ratio is wider in the first foot of soil than 
in the second foot. 
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