TllK BULI.KTIN. 7 



potash. This costs something. For this reason it is thought well to 

 have two sets of valuations — one for the raw or unmixed materials, such 

 as acid phosphate, kainit, cotton-seed meal, etc., and one for mixed 

 fertilizers. 



The values used last season were : 



VALUATIONS FOR I'JIO. 



In Unmixed or Raw Materials. 



For phosphoric acid in acid phosphate 4 cents per pound. 



For phosphoric acid in bone meal, basic slag and 



Peruvian guano 3^ cents per pound. 



For nitrogen 18 cents per pound. 



For potash 5 cents per pound. 



In Mixed Fertilizers. 



For phosphoric acid 4^2 cents per pound. 



For nitrogen I9I/2 cents per pound. 



For potash 5% cents per poimd. 



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 

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

 1.65 per cent, the calculation is made as follows : 



Percentane or Lh'i in wn Lh-i Value Per Value Per Ton, 



feicentage 0/ Lbs. in luu Lbs. lOO Lhs. 2,000 Lbs. 



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



2 pounds potash at 5^/4 cents 0.11 X20:= 2.20 



1.65 pounds nitrogen at 19 1/2 cents 0.321x20= 6.42 



Total value 0.791 X20= $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 : 



