No. 6. 



DEPARTAIENT OF AGRICULTURE. 



905 



Wholesale Cost per Pound of Fertilizer Constituents (New York). 

 I. Ingredients Supplying One Constituent. 



Material. 



Constituent Valued. 



Sulfate of ammonia, 



Nitrate of soda 



Dried blood, high grade. 



Concentrated tankage 



Refuse bone-black 



'Phosphate rock: 



(Peace River. 60 per cent.) 



(Tennessee, 78 per cent.), 



(South Carolina, 60 per cent.) 



Acid phosphate. Phosphoric acid available. 



Double manure salts Potash, 



Sulfate of pota?h j Potash, 



Muriate of potash, I Potash, 



Kainlt Potash, 



Nitrogen 



Nitrogen, 



Nitrogen, 



Nitrogen, 



Phosphoric acid total. 



Phosphoric acid total, 

 Phosphoric acid total, 

 Phosphoric acid total. 



14.30 



12.68 



13.59 



9.86 



3.36 



.41 

 .39 

 .53 

 3.13 

 4.20 

 4.28 

 S.56 

 3.55 



a 



17.16 

 16.22 

 18. Si 

 11.83 

 4.03 



.49 



.47 

 .67 

 3.76 

 &.04 

 B.14 

 4.27 

 4.26 



•The prices of phosphate rock are f. o. b. at the respective points of shipment, not New 

 York, and are taken from the reports of the Engineering and Mining Journal. The prices for 

 potash are taken from the schedule of the Syndicate and those of the remainder from the Oil, 

 Paint and Drug Reporter. 



The quotations for bone are given without specific reference to 

 (jualitj, so that it is impossible from these data to fairly apportion 

 their several wholesale values to the nitrogen and phosphoric acid 

 contained in this material. As compared with tankage, the general 

 tendency is to assign a higher commercial rating to the phosphoric 

 acid in bone and to the nitrogen a rating not very different from that 

 given in tankage. 



The quotations of Thos. J. White and Company show an average 

 wholesale rate in Baltimore during September, 1901, to March, 1902, 

 for crushed tankage to have been |2.2G per unit of ammonia and 

 $0.10 per unit of bone phosphate of lime. This is equivalent to 

 S2.74 per unit of nitrogen and |0.218 per unit of phosphoric acid. 

 The average composition of the ground bone and bone meal samples 

 analyzed last fall in Pennsylvania was: Phosphoric acid, 22.53 per 

 cent.; nitrogen, 2.94 per cent. The prepared bone contains less fat 

 and moisture and often less nitrogen than the ordinary "rough 

 bone;" but these differences tend, in a manner, to neutralize each 

 other. 



Assuming for the rough bone quoted in the New York market the 

 same composition as the bone meal sold in Pennsylvania andfor the 

 value of the nitrogen .f2.74 per unit, the values per pound of th*^ 

 several constituents would be* 



56 



