8 The Bulletin 



ft 



The values used last season were: 



Valuations fob 1914 



In Unmixed or Raw Materials 



For phosphoric acid in acid phosphate 4 cents per pound 



For phosphoric acid in bone meal and Peruvian Guano 



and basic slag 4 cents per pound 



For nitrogen 19i^ cents per pound 



For potash '. 4 cents per pound 



In Mixed Fertilizers 



For phosphoric acid 4i^ cents per pound 



For nitrogen 21 cents per pound 



For potash 5 cents per pound 



Valuations for 1915 



In Unmixed or Raw Materials 



For phosphoric acid in acid phosphate 4 cents per pound 



For phosphoric acid in bone meal and Peruvian Guano 3i^ cents per pound 



For nitrogen 19 cents per pound 



For potash 8 cents per pound 



• In Mixed Fertilizers 



For phosphoric acid 41/2 cents per pound 



For nitrogen 20 cents per pound 



For potash 8l^ 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 : 



Yalue per Value per Ton, 

 Percentage or Lbs. in 100 Lbs. 100 Lbs. 2.000 Lbs. 



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



2 pounds potash at 81/2 cents ; 0.17X20 3.40 



1.65 pounds nitrogen at 20 cents 0.33X20 6.60 



Total value 0.86X20 $17.20 



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



