24 



TRADE VALUES OF FERTILIZING INGREDIENTS IN 

 RAW MATERIALS AND CHEMICALS. 



1901 1902 



CENTS PER POUND 



Nitrogen in ammonia salts, 16.5 16.5 



" nitrates, 14.0 15.0 



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



and in high-grade mixed fertilizers, 16.0 16.5 



" " " fine bone and tankage, 16.0 16.0 



" " " medium bone and tankage, 12.0 12.0 



Phosphoric acid soluble in water, 5.0 5.0 



" " soluble in ammonium citrate, 4.5 4.5 



" " in fine ground fish, bone and tankage, 4.0 4.0 



" " in cottonseed meal, castor pomace and 



wood ashes, 4.0 4.0 



" " in coarse fish, bone and tankage, 3.0 3.0 



" " insoluble (in water and in am. cit.) 



in mixed fertilizers, 2.0 2.0 



Potash as Sulphate, free from Chlorides, 5.0 5.0 



" " Muriate, 4.25 4.25 



The market value of low priced materials used for manurial pur- 

 poses, as salt, wood ashes, various kinds of lime, barnyard manure, 

 factory refuse and waste materials of different description, quite fre- 

 quently does not stand in close relation to the current market value 

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

 cost varies in different localities. Local facilities for cheap trans- 

 portation and more or less advantageous mechanical conditions for a 

 speedy action, exert as a rule, a decided influence on their selling 

 price. 



The market cost of the different essential elements of plant food 

 remains the same as in 1901, with the exception of the nitrogen in 

 form of nitrates and the higher grades of organic nitrogenous fertil- 

 izing materials, which show a somewhat higher cost as compared with 

 the previous year. 



i 



