232 



BOAKD OF AGRICULTURE. 



Bradley's XL Ammonialed Bone Super phos^phale. 

 (Collected of Parkei- and Gannet, Springfield, Mass.) 



Guaranteed composition : soluble phosphoric acid, 7 to 8 

 per cent. ; reverted phosphoric acid, 2 to 3 i)er cent. ; in- 

 eolnble phosphoric acid, 2 to 3 percent; potassium oxide, 

 2 to 3 per cent. ; nitrogen, 2.5 to 3.25. 



Moisture at 100° C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, 

 Reverted pliosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide. 

 Nitrogen, .... 

 Insoluble matter, 



Tcr cent. 

 15.80 

 12.31 

 8.37 

 1.03 

 2.91. 

 2 64 

 3.10 

 4.25 



Valuation per two thousand pounds : 



167.4 pounds of soluble phosphoric acid, 

 20.G pounds of reverted phosphoric acid, 

 68.2 pounds of insoluble phosphoric acid, 

 52.8 pounds of potassium oxide, . 

 62. pounds of nitrogen, 



;i8 41 



1 65 

 3 49 



2 24 

 14 26 



$iO 05 

 Bowkefs Hill and Drill Phosphale. 

 (Collected of Fuller and Newton, Springfield, Mass.) 



Guaranteed composition : total phosphoric acid, 10 to 12 

 per cent. ; soluble and reverted phosphoric acid (availuble), 

 8 to 10 per cent. ; potassium oxide (in form of sulphate), 2 

 to 4 per cent. ; ammonia, 2.0 to 3.5 per cent, (equivalent to 

 nitrogen, 1.7 to 2.88 per cent.). 



Moistureat 100° C, • . . . 



Total phosphoric acid, .... 

 Soluble phosphoric acid, .... 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 



Potassium oxiile, 



Nitrogen, 



Valuation per two thousand pounds : 



90.8 pounds of soluble phosphoric acid, 

 35.4 pounds of reverted phosphoric acid, 

 80. pounds of insoluble phosphoric acid, 

 26. pounds of potassium oxide, . 

 44.4 pounds of nitrogen. 



Per cent. 



14.22 



10.31 

 4.54 

 1.77 

 4.00 

 1.30 

 2.22 



$9 99 

 2 83 

 4 80 

 1 82 



10 21 



$29 65 



