ABSORPTION 01 >AI.ls i;v SOILS. 



L6Q 



same amount of chlorine in both cases and absorbing most nitric 

 nc id where it was combined with lime. 



Lime was thrown into solution by the soils under good and 

 poor corn, where it went in as chloride but was absorbed as the 

 nitrate ; while the "no corn" soil showed the reverse relation. 



Magnesia was absorbed in largest amount by the soil under 

 good corn and in least amount by that under poor corn. 



Nitric acid was; thrown into solution by the poor soil in both 

 cases, but in largest amount when it went in with the lime. It 

 was absorbed in much the largest amount from the potash salt 

 by the good corn soil but in least amount as the lime nitrate. 



The good corn soil has absorbed more phosphoric acid than 

 the poor corn soil in both cases and more than the "no corn" soil 

 in one case. 



Another set of these same! soils were treated with the same 

 solution in the same manner, except that they were left in con- 

 tact over night or during about 18 hours, instead of 20 minutes, 

 as in the preceding case. The results of these determinations 

 are given in the next table. 



Salts absorbed from a solution during 18 hours by black marsh 

 soil in three productive conditions. 



