78 Dilute Acids and Phosphorus Compounds in the Soil 



Hoos 2C Soil. 



10 20 30 40 Q 50 60 70 80 90 100 

 P2O5 mgm. per 1000 c.c. of solution 

 Fig. 5 a. 



Fig. 5. 



10 20 30 40 c 50 60 70 80 



P2O5 mgm. per 1000 c.c. of solution 

 Fig. 5 6. 

 The effect of time, and of strength of acid, on the adsorption phenomena. 



