AGRICULTURAL EXPERIMENT STATION. 3 



and the muriate, unless the chlorine present in the fertilizer is not 

 sufficient to combine with it, in which case the excess of potash is 

 reckoned at the price of the sulphate. 



The valuation of a fertilizer is obtained by multiplying the 

 percentages of the several ingredients by twenty (which gives the 

 pounds per ton) , and these products by the prices per pound, and 

 the sum of the several final products is the market value of the 

 fertilizing ingredients in one ton. For instance the "station 

 valuation" of the Allen Corn Fertilizer No. 549 is obtained as 

 follows : 



2.34 per cent. Nitrogen equal 46.S lbs. per ton @ 17cts .$7.96 



5.05 •« Sol. phos. acid •' 101.0 lbs. " '• @ Sets 8.08 



1.48 " Rev. " " '■ 29.6 " " " @ 7Jcts 2.22 



1.96 " Insol. ' 39.2 " '• " @ 3cts 1.18 



.12 " Potash " 102.4 u " " @ 4£cts 4.61 



Valuation #24.05 



Change in Method. 



Heretofore separate analyses have been made of the three 

 samples representing the same fertilizer. This year equal quanti- 

 ties of the three samples have been mixed, and an analysis of this 

 mixture has been assumed to give the same result as would be 

 reached by averaging the analysis of the three samples, an 

 assumption which must be correct. 



