324 



BOARD OF AGRICULTURE. 



5 to 6 per cent. ; potassium oxide, 5 to 7 per cent. : nitro- 

 gen, soluble, in organic matter, in ammonia, 4 to 6 percent. 



Tor cent. 



Moisture at 100° C, 8.85 



Total phosphoric acid, 7.09 



Reverted phosphoric acid, 

 Soluble phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen (in organic matter), 

 Nitrogen (in nitrates), . 

 Nitrogen (in ammonia salts). 

 Potassium oxide, 

 Insoluble matter, 



Valuation per two thousand pounds : — 



34 6 pounds of reverted phosphoric acid, 

 65.2 pounds of soluble phosphoric acid, 

 42. pounds of insoluble phosphoric acid, 

 167 2 pounds of potassium oxide, 

 41. pounds of nitrogen (in organic matter), 

 77 8 pounds of nitrogen (in ammonia salts), 

 8.6 pounds of nitrogen (in nitrates), 



$45 50 

 Bradleifs XL Ammoniated Bone Superphosphate. 

 (Collected of Sheldon & Newcomb, Greenfield, Mass.) 



Guaranteed composition : Nitrogen 2|^ to 3^ per cent, 

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

 acid, 11 to 14 per cent. ; soluble phosphoric acid, 7 to 8 per 

 cent. ; reverted phosphoric acid, 2 to 3 per cent. ; available 

 phosphoric acid, 9 to 11 per cent. ; insoluble phosphoric 

 acid, 2 to 3 per cent. ; potassium oxide, 2 to 3 per cent. 



Per cent. 



Moisture at 100° C 14.75 



Total phosphoric acid. 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide. 

 Nitrogen (in organic matter). 

 Nitrogen (in nitrates), . 

 Insoluble matter, 



13.57 

 8.44 

 2.34 

 2.79 

 1.59 

 2.97 

 .54 

 5.25 



Valuation per two thousand pounds : — 



168.8 pounds of soluble phosphoric acid, 

 46.8 pounds of reverted phosphoric acid. 



$16 88 

 4 21 



