304 



BOARD OF AGRICULTURE. 



4 to 6 per cent. ; potash, 6 to 8 per cent. ; ammonia, 5 to 

 per cent, (equivalent to nitrogen, 4.1 to 5.76 per cent.). 



Per cent. 



4.96 



Moisture at 100° C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Potassium oxide, 

 Nitrogen (in organic matter) 

 Nitrogen (in ammonia salts), 

 Nitrogen (in nitrates), . 



Valuation per two thousand pounds : — 



85.2 pounds of soluble phosphoric acid, 

 17. pounds of reverted phosphoric acid, . 

 85.6 pounds of insoluble phosphoric acid, . 

 118.8 pounds of potassium oxide, 

 66 8 pounds of nitrogen (in organic matter) , 

 57.6 pounds of nitrogen (in ammonia salts), 

 32.8 pounds of nitrogen (in nitrates). 



9.39 

 4.26 

 .85 

 4.28 

 5.94 

 2.84 

 2.88 

 1.64 



$8 52 

 1 53 

 3 85 

 5 05 



11 36 



12 67 

 5 90 



$18 88 

 Bradley's XL Ammoniated Bone Stiperphosphnte. 



(Collected of PuflFer & Wilder, Springfield, Mass.) 



Guaranteed composition : Nitrogen, 21 to 3| per cent, 

 (equivalent to ammonia, 3 to 4 per cent. ) ; soluble phosphoric 

 acid, 7 to 8 per cent. ; reverted phosphoric acid, 2 to 3 per 

 cent. ; insoluble phosphoric acid, 2 to 3 per cent. ; total 

 phosphoric acid, 11 to 14 per cent. ; potassium oxide, 2 to 

 3 per cent. 



Moisture at 100" C, 

 Total phosphoric acid. 

 Soluble phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Nitrogen (in organic matter), 

 Nitrogen (in nitrates). 

 Potassium oxide. 

 Insoluble matter. 



Valuation per two thousand pounds : — 



143.8 pounds of soluble phosphoric acid, 

 68.4 pounds of reverted phosphoric acid, 

 39,2 pounds of insoluble phosphoric acid. 



Per cent. 



15.60 

 12.57 

 7.19 

 3.42 

 1.96 

 2.88 

 .37 

 2.40 

 4.86 



$14 38 

 6 16 

 1 76 



