8 The Bulletin. 



With an 8 — 2 — 1.65 goods, which means that the fertilizer con- 

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

 nitrogen 1.65 per cent, the calculation is made as follows : 



Percentage, or Lbs. m 100 Lbs. ^ame^^f ^"'roO^^Lb^' 



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



2 pounds potash at 5% cents 0.11 X20= 2.20 



1.65 pounds nitrogen at 19 14 cents 0.321x20= 6.42 



Total value 0.791x20= $15.82 



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

 Freight rates from the seaboard and manufacturing centers to interior 

 points are given in the following table : 



