E. J. Russell and J. A. Prescott 



89 



Table III. Amounts of P^O^ extracted from soil by 1000 c.c. of acids 

 of different strength at constant temperature. 



Agdell Soil. 



Temperature 23° C. 



Note. — Extractions were also made with acetic acid, but the amounts of P2O5 were 

 too small to be estimated. 



Hydrochloric acid 



