1889.] PUBLIC DOCUMENT — No. 33. 189 



manurial substances in our principal markets for a given 

 period of time. The results of the inquiries into the condi- 

 tion of the trade during the six months preceduig the 1st of 

 March, 1888, are embodied in the subsequent tabular state- 

 ment of cost of fertilizing ingredients for the opening of the 

 season of 1888. 



The market reports of centres of trade in New England, 

 New York and New Jersey, aside from consultation with 

 leading manufacturers of fertilizers, and notes on actual sales 

 of individual farmers and farmers' associations, etc., furnish 

 the necessary information regarding the current trade value 

 of fertilizing ingredients. The subsequent statement of cash 

 values in the retail trade is obtained by taking the average 

 of the wholesale quotations in New York and Boston, dur- 

 ing the six months preceding March 1, 1888, and increasing 

 them by twenty per cent., to cover expenses of sales, 

 credits, etc. 



Trade Values of Fertiltzixg Ingredients in Raw 

 Materials and Chemicals. 



188$. 

 Cents per Pound. 



Nitrogen in ammoniates, 17^ 



Nitrogen in nitrates, 15 



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



cotton-seed meal and castor pomace, 1G| 



Organic nitrogen in fine-ground bone and tankage, . . . IGi- 



Organic nitrogen in fine-ground medium bone and tankage, . 13 



Organic nitrogen in medium bone and tankage, .... lOJ 



Organic nitrogen in coarser bone and tankage, .... 8| 



Organic nitrogen in hair, horn-shavings and coarse fish scrap, . 8 



Phosphoric acid soluble in water, 8 



Phosphoric acid soluble in ammonium citrate,* .... 7^ 



Phosphoric acid in dry-ground bone, fish bone and tankage, . 7 



Phosphoric acid in fine medium bone and tankage, ... 6 



Phosphoric acid in medium bone and tankage, .... 5 



Phosphoric acid in coarser bone and tankage, .... 4 



Phosphoric acid in fine-ground rock phosphate, .... 2 

 Potash as high-grade sulphate, and in forms free from muriate 



and chlorides, 51 



Potash as kainite, 4J 



Potash as muriate, 4 J 



♦Dissolved from two grams of phosphate unground, by 100 C. C. neutral solu- 

 tion of ammonium citrate, sp. gr. 1.09 in thirty minutes at 65° C, with agitation 

 once in five minutes ; commonly called " reverted " or " back-gone " phosphoric acid. 



