No. 6. 



DEPARTMENT OF AaRICUDTURE. 



537 



Under these conditions, the wholesale cost per pound in New York of the val- 

 uable constituents of such materials as furnish but a single fertilizing element, 

 these materials being assumed to be in the state of preparation and in the 

 packing in which the manufacturer purchased them, are given in the following 

 table; also a figure representing a fair retail price at the factory, the materials 

 havmg undergone no change in treatment or packing and the allowance for ex- 

 penses and profit in retailing being 20 per cent. 



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

 I. Ingredients Supplying One Constituent. 



Material. 



Sulphate of ammonia, , Nitrogen 



Nitrate of soda, ' Nitrogen. 



Dried blood, high grade, , Nitrogen 



Concentrated tankage, Nitrogen 



Refuse bone black: 



Oil ' Phosphoric acid. 



Sugar j Phosphoric acid, 



Phosphate rock:* 



Tennessee, 7S per cent., Phosphoric acid. 



South Carolina, 60 per cent | Phosphoric acid, 



Acid phosphate Phosphoric acid. 



Double manure salts. 

 Sulphate of potash. 

 Muriate of potash, 

 Kainit 



Potash, 

 Potash, 

 Potash, 

 Potash, 



total, ... 

 total 



total 



total 



available. 



15.26 

 16.53 

 16.73 

 14 51 



2.48 

 3.19 



2.97 



IS. 31 

 19. S4 

 20.08 

 17.41 



2 98 

 3. S3 



88 

 1.39 

 3.83 

 5.26 

 5.42 

 4.48 

 3.56 



♦The prices of phosphate rock are f. o. b. at the prespective points of shipment, not New York. 

 The prices for potash are taken from the schedule of the syndicate. The prices for concentrated 

 tankage are taken from the reports of Thos. J. White & Co., and those of the remainder from 

 the Oil, Paint and Drug Reporter. 



The quotations for bone are given without specific reference to quality, 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 com- 

 pared 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 dif- 

 ferent from that given in tankage. 



In previous years the value assigned to the nitrogen has been the same as 

 that quoted on crushed tankage c. a. f. Baltimore. 



Quotations for crushed tankage not being available at this time, the present 

 value for nitrogen is based upon quotations for ground tankage, 11 per cent, 

 ammonia, 15 per cent, bone phosphate, f. o. b. Chicago, which, according to the 

 reports of Thos. J. "WTiite & Co., Baltimore, during September, 1906, to March, 

 1907 ,• have been $2.52 per unit of ammonia. 



During the three proceeding years, quotations on crushed tankage, c. a. f. 

 Baltimore, have been on an average 12.67 per cent, in advance of those on 

 ground tankage, 11 and 15 f. o. b. Chicago. Increasing the price of ground tank- 

 age as quoted above by this percentage, we have .$2,839 per unit of ammonia as 

 the value assigned to the nitrogen in bone. 



This is equivalent to $3.44 per unit in nitrogen The average composition of the 

 ground bone and bone meal samples analyzed last fall in Pennsylvania was: 

 Phosphoric acid, 22.00 per cent.; nitrogen, 3.26 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 com- 

 position as the bone meal sold in Pennsylvania, and for the value of the nitro- 

 gen $3.44 per unit, as previously stated, the values per pound of the several 

 constituents would be: 



36 



