G The Bulletin. 



In Mixed Fertilizers. 



For phosphoric acid 41/2 cents per pound. 



For ammonia 161/2 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 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 phosphoric acid at 4 J cents 0.36 X 20= |7. 20 



2 pounds potash at 5i cents 0.11X20= 2.20 



2 pounds ammonia at 16^ cents 0.3.'^X20= 6.60 



Total value 0.80X20= $16.00 



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 : 



