i3 



simply shows its cost in our general markets. The agricultural 

 value of a fertilizer shows its capacity in producing certain agricul- 

 tural crops, and depends not only upon the condition of the fertility 

 of the soil upon which the fertilizer is used, but also upon the phys- 

 ical condition of the soil, the mode of cultivation, the season and 

 the crop to be raised. Experience alone can determine the general 

 fitness and approximate agricultural value of compound commercial 

 fertilizers and fertilizing: materials. 



