324 



BOAED 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. 



Per cent. 



Moisture at 100° C, 8.85 



Total phosphoric acid, . 

 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, 

 1G7 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), 



7.09 

 1.73 

 3.26 

 2.10 

 2.05 

 .43 

 3 89 

 8.36 

 1.80 



15 50 



Bradlei/'s 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. 



14.75 



13.57 



Moisture at 100" C, 

 Total phosphoric acid. 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide. 

 Nitrogen (in organic matter). 

 Nitrogen (in nitrates), . 

 Insoluble matter. 



Valuation per two thousand pounds : — 



168.8 pounds of soluble phosphoric acid, 

 46.8 iJounds of reverted phosphoric acid, 



8.44 

 2.34 

 2.79 

 1.59 

 2.97 

 .54 

 5.25 



$1G 88 

 4 21 



