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The above schedule of trade values is based upon the condition 

 of the fertilizer market in centers of distribution in New England 

 during the six months preceding March 1900 and refers to the current 

 market prices of the leading standard raw materials which enter 

 largely into the manufacture of our commercial fertilizers. 



The following is a list of such materials : 



Sulphate of Ammonia, 

 Nitrate of Soda, 

 Azotiire, 

 Dried blood, 

 Cotton seed meal, 

 Castor pomace. 

 Linseed meal, 

 Dry ground fish, 

 Bone and tankage, 

 Dry ground meat. 



Dissolved bone. 



Ground phosphate rock. 



Acid phosphate. 



Refuse bone black, 



High grade sulphate of potash. 



Muriate of potash. 



Sulphate of potash-magnesia, 



Kainit, 



Sylvinite, 



Crude saltpetre. 



Valuation. The approximate value of a compound fertilizer or 

 any material used for fertilizing pur|)oses is obtained by calculating 

 the value of each of the three essential elements of plant food (nitro- 

 gen, phosphoric acid and potassium oxide, including the different 

 forms of each wherever different forms are recognized in the table), 

 in one hundred pounds of the fertilizer and multiply each product by 

 twenty to change it to a ton basis. The sum of these values will 

 give the total value of the fertilizer per ton at the principal places 

 of distribution. 



