ABSORPTION OF SALTS BY SOILS. 



119 



Materials recovered from noil used in ammonia absorption 

 experiments. 



The soil also contained .0059% ammonia, .0105% nitric acid 

 and .0673% total nitrogen. Four strengths of solution were 

 used in the ratio of 1, 2, 4 and 10, and 100 grams of soil were 

 digested 3 days in 250 c. c. of solution. The results appear in the 

 next table. 



Amounts of ammonia absorbed by a soil from different strengths of 



ammonia salts. 



