The Bulletin. 7 



therefore, means that there is sufficient chlorine present in the ferti- 

 lizer from all sources to combine with the potash to the extent indi- 

 cated 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 

 intended 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 

 approximate, as the cost of fertilizing materials is liable to change 

 as other commercial products are, but they are believed to fairly rep- 

 resent the cost of making and putting fertilizers on the market. 

 They are based on a careful examination of trade conditions, whole- 

 sale and retail, and upon quotations of manufacturers. 



Relative value per ton, or the figures showing this, repi'esents 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. 



VALUATIONS FOR 1909. 



In Unmixed or Raiv 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 19V2 cents per pound. 



For potash ■ 51/2 cents per pound. 



The valuations decided on this season, for reasons already given, are: 



VALUATIONS FOR 1910. 



In Unmixed or Raiv Materials. 



For phosphoric acid in acid phosphate 4 cents per pound. 



For phosphoric acid in bone meal, basic slag 



and Peruvian guano 3^2 cents per pound. 



For nitrogen 18 cents per pound. 



For potash 5 cents per pound. 



