14 



The state of moisture exerts a no less important influence on the 

 pecuniary value in case of one and the same kind of substance. 

 Two samples of fish fertilizers, although equally pure, may differ 

 from 50 to 100 per cent, in commercial value, on account of mere 

 difference in moisture. 



Crude stock for the manufacture of fertilizers, and refuse materials 

 of various descriptions, have to be valued with reference to the 

 market price of their principal constituents, taking into consideration 

 at the same time their general fitness for speedy action. 



TRADE VALUES OF FERTILIZING INGREDIENTS IN RAW 



MATERIALS AND CHEMICALS. 



1890. 



Cents per pound. 



Nitrogen in ammoniates, 17 



" " nitrates, IA\ 



Organic nitrogen in dry and fine ground fish, meat, blood, 17 

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



" " " fine ground bone and tankage, 16| 



" " " fine ground medium bone and tankage, 13 



" " " medium bone and tankage, 10^ 



" " " coarser bone and tankage, 8i 



" " '' hair, horn-shavings and coarse fish 



scraps, 8 



Phosphoric acid soluble in water, 8 



" " soluble in ammonium citrate, 1\ 



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



" " in fine medium bone and tankage, 6 



" "in medium bone and tankage, 5 



" "in coarse bone and tankage, 4 



" "in fine ground rock phosphate, 2 



Potash as High Grade Sulphate, and in forms free from 



Muriate or Chlorides, Ashes, etc. 6 



" " Kainite, 4^ 



" " Muriate, 4i 



The organic nitrogen in siiperpJios2yhates, special manures and 

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

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

 materials, namely, 17 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 



