The Bulletin. 7 



of the chlorine. The term potash from muriate in our analyses, there- 

 fore, means that there is sufficient chlorine present in the fertilizer 

 from all sources to combine with the potash to the extent indicated by 

 the analyses. 



VALUATIONS. 



To have a basis for comparing the values of different fertilizer 

 materials and fertilizers, it is necessary to assign prices to the three 

 valuable constituents of fertilizers — ammonia, phosphoric acid, and 

 potash. These figures, expressing relative value per ton, are not in- 

 tended to represent crop-producing power, or agricultural value, but are 

 estimates of the commercial value of ammonia, phosphoric acid and 

 potash in the materials supplying them. These values are only approxi- 

 mate, as the cost of fertilizing materials is liable to change as other 

 commercial products are, but they are believed to fairly represent the 

 cost of making and putting fertilizers on the market. They are based 

 on a careful examination of trade conditions, wholesale and retail, and 

 upon quotations of manufacturers. 



Relative value per ton, or the figures showing this, represents the 

 prices on board the cars at the factory, in retail lots of five tons or 

 less, for cash. 



To make a complete fertilizer the factories have to mix together in 

 proper proportions materials containing ammonia, phosphoric acid and 

 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 1912. 



In Unmixed or Raiv Materials. 



For phosphoric acid in acid phosphate 4 cents per pound. 



For phosphoric acid in bone meal, basic slag, and Peru- 

 vian guano SV 2 cents per pound. 



For nitrogen 19% cents per pound. 



For potash 4 cents per pound. 



In Mixed Fertilisers. 



For phosphoric acid 4% cents per pound. 



For nitrogen 21 cents per pound. 



For potash 5 cents per pound. 



VALUATIONS FOR 1913. 



In Unmixed or Raw Materials. 



For phosphoric acid in acid phosphate 4 cents per pound. 



For phosphoric acid in bone meal and Peruvian Guano. 3 1 /. cents per pound. 



For phosphoric acid in basic slag 4 cents per pound. 



For nitrogen 19% cents per pound. 



For potash 4 cents per pound. 



