8 The Bulletiis'. 



In Mixed Fertilizers. 



For phosphoric acid 4^2 cents per pound. 



For nitrogen 21 cents per pound. 



For potash 51/2 cents per pound. 



HOW RELATIVE VALUE IS CALCULATED. 



In the calculation of relative value it is only necessary to remember 

 that so many per cent means the same number of pounds per hundred, 

 and that there are twenty hundred pounds in one ton (2,000 pounds). 



With an 8-2-1.65 goods, which means that the fertilizer contains avail- 

 able phosphoric acid 8 per cent, potash 2 per cent, and nitrogen 1.65 

 per cent, the calculation is made as follows : 



^^ . ^^^ -r. Value Per Value Per Ton, 



Percentage or Lhs. m 100 Lbs. jqq ^j,^ 2,000 Lbs. 



8 pounds available phosphoric acid at 4^^ cents. . . 0.36 X20=: $ 7.20 



2 pounds potash at ^Vz cents 0.11 X20= 2.20 



1.65 pounds nitrogen at 21 cents 0.347x20= 6.94 



Total value 0.817x20= ?16.34 



Freight and merchants' commission must be added to these prices. 

 Freight rates from the seaboard and manufacturing centers to interior 

 points are given in the following table. 



