674 ANNUAL REPORT OF THE OflE. Doc. 



In ammoniates such as dried blood and fish guano, the unit is of 

 ammonia, of which 82.35 per cent, is nitrogen; in acid phosphate, the 

 unit is of phosphoric acid (phosphorus pentoxid). 



There has been a slight increase' in prices in blood, bone and tank- 

 age, due to the increased demand for this class of ammoniates caused 

 by the export business, which has taken practically all of the cotton- 

 seed meal out of the country. 



Nitrate of soda and sulphate of ammonia, however, showed a 

 gradual falling off in price. 



Acid phosphate is slightly higher, while phosphate rock shows a 

 decrease in price compared with last year, the price per short ton hav- 

 ing remained constant throughout the year at |5.25, for Tennessee 

 phosphate. 



Potash Salts: The reports of the U. S. Bureau of Statistics show 

 the following entries for consumption during the fiscal year 1908 and 

 1909: 



IMO 



Muriate (pounds) — 238,949,008 297,887,838 



Kieserit, kainit, etc., (tons) 



The price of potash salts remained the same as last year until the 

 middle of February, when sales were made at slightly lower figures 

 than the old schedule called for, the syndicate having issued no defi- 

 nite new price schedule up to date. 



Muriate, 80 per cent., per 100 pounds _. 1.885 



Sulphate, 48 per cent., per 100 pounds, — _ 2.17 



Double manure salt, 48-53 per cent., per 100 pounds, 1.16 



Kainit, 12.4 per cent. , actual potash, per ton, S.Zi) 



Manure salt, 20 per cent, potash, per ton 14.68 



Composition of Raw Materials.— In order to form a correct idea 

 of the cost per pound of the fertilizer constituents of these ma- 

 terials, it is needful to determine their composition or, in other 

 words, the quantities of valuable constituents each contains. The 

 following table shows the composition of the raw materials used 

 in the manufacture of fertilizers. No analysis of these materials, 

 with the exception of ground bone and dissolved rock, have been 

 made in Pennsylvania. The figures in the following table include 

 the averages of the results of analyses made in Connecticut, New 

 Jersey and Massachusetts during the past year, except in the case of 

 ground bone and dissolved rock phosphates, where Pennsylvania re- 

 sults alone are included. 



