qiiontly does not stand iu a close relation to the market value of the 

 amount of essential articles of plant food they contain. Their cost 

 varies in different localities. Local facilities for cheap transportation 

 and more or less advantageous mechanical condition for a speedy 

 action, exert as a rule, a decided influence on their selling price. 



The mechanical condiiion of any fertilizing material, simple or 

 compound, deserves the most serious consideration of farmers, when 

 articles of a similar chemical character are offered for their choice. 

 The degree of pulverization controls, almost without exception, under 

 similar conditions, the rate of solubiHty, and the more or less rapid 

 diffusion of the different articles of plant-food throughout the soil. 



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

 l)ecuniary value, in case of one and the same kind of substance. 

 Two samples of fish fertilizei's, although equally pure, may difl^er from 

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

 ence in moisture. 



Crude stock for the manufacture of fertilizers, and refuse materials 

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

 ket 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. 1889. 



Cents per pottnd. 



Nitrogen in ammouiates, 19 



" " nitrates, 17 

 Organic nitrogen in dry and fine ground fish, meat and blood, 19 



" " '• 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, 8^ 



'• '' '• hair, horii shavings and coarse fish scraps, 8 



Phosphoric acid soluble in water, 8 

 '■ '• soluble in ammonium citi'ate, 71 



" "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 Muriates or Chlorides ; Ashes, etc., 6 



" " Kainite, 4| 



" " Muriate, Ah 



