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. 



Phosphoric 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. 



