TRADE VALUES 



OF EERTILJZING INGREDIENTS IN RAW MATERIALS 



AND CHEMICALS. 



1891. 



Cents per pound. 



Nitrogen in ammouiates, 18A 



" " nitrates,* 14^ 



Organic nitrogen in dry and fine ground fish, meat, blood, 15| 

 " " " cotton-seed meal and castor pomace, 15 



" " " fine ground bone and tankage, 15 



" " " fine ground medium bone and tankage, 12 



" " " medium bone and tankage, 9^ 



" " " coarser bone and tankage, 7i 



" " " hair, horn-shavings and coarse fish 



scraps, 7 



Phosphoric acid soluble in water, 8 



" " soluble in ammonium citrate, 7| 



" " in dry ground fish, fine bone and tankage, 7 



" "in fine medium bone and tankage, 5^ 



" "in medium bone and tankage, 4^ 



" "in coarse bone and tankage, 3 



Potash as High Grade Sulphate, and in forms free from 



Muriate or Chlorides, Ashes, etc., 5^ 



" " Kainite, 4i 



" " Muriate, 4i 



The above trade values are the figures at which in the six months 

 preceding March, 1891, the respective ingredients could be bought 

 at 7'etail for cash in our large markets^ in the raw materials^ which are 

 the regular source of supply. 



TRADE VALUES 



IN SUPERPHOSPHATES, SPECIAL MANURES AND MIXED 



FERTILIZERS OF HIGH GRADE. 



The organic nitrogen in superphosphates^ special manures and 

 mixed fertilizers of a high grade is usually valued at the highest fig- 

 ures laid down in the trade values of fertilizing iugredienis in raw 

 materials, namely, 15|^ cents per pound ; it being assumed that the 

 organic nitrogen is derived from the best sources, viz., animal matter, 

 as meat, blood, bones, or other equally good forms, and not from 

 leather, shoddy, hair, or any low-priced, inferior form of vegetable 

 matter, unless the contrary is ascertained. The insoluble phos- 

 phoric acid is valued in this connection at two cents. 



*The cost stated represents the average of the six montlis preceding March, 1891;— it is 

 higher at present on account of the civil war iu Chili. 



