EFFECT OF DRYING SOILS ON WATER-SOLUBLE CONSTITUENTS 



TABLE 8 



Nitrate recovered from ground quartz and while silt loam 



{Nitrate solution, 100 p. p. m. or 0.1 mgm. per cc.) 



203 



* Average of four determinations. 

 t Average of eight determinations. 



TABLE 9 



Nitrate recovered from ground quartz 



{Nitrate solution, 500 p. p. m. or 0.5 mgm. per cc.) 



* Average of four determinations. 



A glance at tables 8 and 9 shows that the recover of nitrate was less 

 complete with the more dilute solution, the average percentage of recovery 

 being 76.3 for the moist quartz and 70.7 for the oven-dry quartz, compared 



