6 The Bulletin. 



In Mixed Fertilizers. 



Eor phosphoric acid 4% cents per pound. 



For ammonia 161/2 cents per pound. 



For potash 5i^ cents per pound. 



HOW EfiLATIVE 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 hun- 

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

 pounds). 



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

 available phosphoric acid 8 per cent, potash 2 per cent, and ammonia 

 2 per cent, the calculation is made as follows : 



Percentage or Lbs. Value Per Value Per Ton 



in 100 Lbs. ' 100 Lbs. 2,000 Lbs. 



8 pounds available pbospboric acid at 4i cents 0.36X20= $7,20 



2 pounds potash at 5.T cents 0.11X20^ 2.20 



2 pounds ammonia at 16^ cents 0.33X20= 6.60 



Total value 0.80X20= 116.00 



Freight and merchant's commission must be added to these prices. 

 Freight rates from the seaboard and manufacturing centers to inte- 

 rior points are given in the following table: 



