290 



ILLINOIS STATE ACADEMY OF SCIENCE 



by both the Jones and Veitch methods. These seven soils 

 showing relatively high Hopkins values are for the most 

 part low in organic matter, being yellow silt loams or 

 sandy soils, although one is classified as black mixed 

 loam. There are six soils having a lime-requirement of 

 more than 1000 pounds per acre by the Hopkins method 

 and the other methods agree in showing these soils to be 



Clay loams and clays. 

 54ot 



Soils very high in organic matter 



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highly acid. They do not agree, however, in the degree 

 of acidity. These soils, with one exception, are of types 

 characteristically low in organic matter. It has been 

 generally observed that the majority of Illinois soils 

 actually need considerably larger applications of lime- 

 stone in order to grow the more acid-density crops than 

 are indicated by the results obtained by the Hopkins 

 method. 



