326 



BOARD OF AGRICULTURE. 



53.8 pounds of nitrogen (in organic matter), 

 27.4 pounds of nitrogen (in nitrates), . . . 

 156.6 pounds of potassium oxide, . 



flO 76 

 4 93 

 6 66 



$37 82 

 Bradley^s XL Ammoniated Bone Superphosphate. 

 (Collected of R. T. Prentiss, Holyoke, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 7 to 8 

 per cent. ; reverted phosphoric acid, 2 to 3 per cent. ; nitro- 

 gen, 2% to 3| per cent. ; potassium oxide, 2 to 3 per cent. 



Per cent. 



10.65 

 12.53 



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 : — 



168.8 pounds of soluble phosphoric acid, 

 19.6 pounds of reverted phosphoric acid, 

 62.2 pounds of insoluble phosphoric acid, 

 58.6 pounds of nitrogen (in organic matter) 

 5.8 pounds of nitrogen (in nitrates), . 

 32. pounds of potassium oxide, . 



8.44 

 .98 

 3.11 

 2.93 

 .29 

 1.60 

 5.10 



$16 88 



1 76 



2 80 

 $11 72 



1 04 

 1 36 



S35 50 



Stockbridge''s Manures {Tobacco.') 

 (Collected of C, F. Brown, Northampton, Mass.) 



Guaranteed composition : Nitrogen, 3.25 to 4.25 per cent, 

 (ammonia, 4 to 5 per cent.) ; soluble and available phos- 

 phoric acid, 8 to 10 per cent. ; calcium oxide, 8 to 10 per 

 cent. ; potassium oxide, 5 to 6 per cent. 



Moisture at 100° C , 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Revei'ted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen (in organic matter). 

 Nitrogen (in nitrates), . 

 Potassium oxide, 

 Calcium oxide. 

 Insoluble matter, 



Per cent. 



14.98 

 11.55 

 6.17 

 1.18 

 4.20 

 2.10 

 1.09 

 5.09 

 16,26 

 6.39 



