304 



BOARD OF AGRICULTURE. 



4 to 6 per cent. ; potash, 6 to 8 per cent. ; ammonia, 5 to 7 

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



Per cent. 



4.96 

 9.39 



4.26 



.85 

 4.28 

 5.94 

 2.84 

 2.88 

 1.64 



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). 



US 88 

 Bradley's XL Ammoniated Bone Stipcrjihosphaie. 



(Collected of Puffer & 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 t^vo thousand pounds : — 



143.8 pounds of soluble phosphoric acid, 

 68.4 pounds of reverted phosphoric acid, 

 39.2 pounds of insoluble phosphoric acid, 



