36 AGRICULTURAL EXPERIMENT STATION. 



corn grower finds it necessarj^ to decide between the two fertilizers 

 he should not be long in doubt. 



Two main considerations, then, should control in the purchase of 

 commercial fertilizers, the composition and the market value. No 

 farmer can afford to purchase material he does not need, and it is 

 equally unwise to pay $35 per ton for a fertilizer whose valuation is 

 only $15,87. 



The figures which show the composition of the various fertilizers 

 analyzed represent the pounds of ingredients found in one hundred 

 pounds of the fertilizer. 



