'7 



and New Jersey Experiment Stations at a conference held during the 

 month of March, 1904, and is based upon the condition of the fer- 

 tiHzer market in centers of distribution in New England, New York 

 and New Jersey during the six months preceding March, 1904, and 

 refers to the current market prices, in ton lots, of the leading stand- 

 ard raw materials, which furnish nitrogen, phosphoric acid and pot- 

 ash, and which enter largely into the manufacture of our conmiercial 

 fertilizers. The following is a list of such materials : — 



Sulphate of ammonia. Dissolved bone, 



Nitrate of soda. Ground phosphate rock, 



Azotine, Acid phosphate. 



Dried blood, Refuse bone black, 



Cotton seed meal, High grade sulphate of potash, 



Castor pomace. Muriate of potash. 



Linseed meal. Sulphate of potash-magnesia, 



Dry ground fish, Kainite, 



Bone and tankage, Sylvinite, 



Crude saltpetre. 



A comparison of the market cost of the different essential ingredi- 

 entsof plant food for 1904, with the previous year, shows the following 

 variation : Nitrogen in form of nitrates is a cent higher per pound. 

 The higher grades of organic nitrogen, including nitrogen classed in 

 high grade mixed fertilizers, are a half cent higher in cost than for 

 the year 1903. The cost of the different forms of phosphoric acid 

 and potassium oxide remains the same as in the previous year. 



Valuation. The approximate value of a compound fertilizer or any 

 material used for fertilizing purposes is obtained by calculating the 

 value of each of the three essential elements of plant food (nitrogen, 

 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 multiplying each product by 

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

 the total approximate value of the fertilizer per ton at the principal 

 places of distribution. 



In figuring the commercial value of a compound fertilizer, a suit 

 able amount should be added to cover the expenses incurred in the 

 manufacture and sale of the goods. 



