i6 



TRADE VALUES OF FERTILIZING INGREDIENTS IN RAW MATERIALS 

 AND CHEMICALS FOR I907, 



Nitrogen. 



Cents per pound. 



Nitrogen in ammonia salts, 

 " " nitrates, 



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



and in high-grade mixed fertilizers, 20^ 

 " " " fine bone and tankage, 205^ 



" " " coarse bone and tankage, 15 



Phosphoric Acid. 



Phosphoric acid soluble in water, 5 

 " " soluble in ammonium citrate, (reverted 



phosphoric acid), 4^ 



" '• in fine ground bone and tankage, 4 



" " in coarse bone and tankage, 3 



" " in cottonseed meal, linseed meal, castor 



pomace and ashes, 4 

 " '• insoluble (in neutral citrate of ammonia 



solution) in mixed fertilizers, 2 



Potash. 



Potash as sulphate, free from chlorides, 5 



'* " muriate (chloride), 4^4^ 



" " carbonate, 8 



The method of obtaining the retail cash prices pub- 

 Retail Cash lished in the following tables is as follows : 



Prices. The collector ascertains the price of each brand of 



fertilizer by inquiry of the agent or his representa- 

 tive, at the time the samples are taken ; these prices are verified 

 later by communicating with each agent. The results of analysis of 

 each brand, together with prices and other data, are reported to the 

 agent as well as to the manufacturer, to give opportunity for cor- 

 rections and explanations. 



