132 



HATCH EXPERIMENT STATION. 



[Jan. 



The following statement regarding the amount of phos- 

 phoric acid applied in the case of each plat, and also the 

 amount removed from them by the crops raised, shows ap- 

 proximately how much of the former is still stored up in the 

 soil in each plat. 



PJiosphoric Acid applied to and removed from Field (Pounds) . 



Phosphoric Acid applied to and removed from Field (Pounds) — 



Concluded. 



The amount of phosphoric acid left in the soil at the close 

 of the season of 1895 is lowest in Plat 5, where dissolved 

 bone-black, the most costly phosphate used in the experi- 

 ment, has served as its source. The experiment will be 

 continued until a final answer is obtained. 



