326 



BOARD OF AGRICULTURE. 



53.8 pounds of nitx'ogen (in organic matter), 

 27.4 pounds of nitrogen (ia nitrates), . 

 156.6 pounds of potassium oxide, . 



flO 76 

 4 93 

 6 66 



$37 82 



Bradley''s XL Ammonialed 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. 



Moisture at 100° C, 

 Total pliosphoric 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 pliosphoric acid, 

 58.6 pounds of nitrogen (in organic matter), 

 5.8 pounds of nitrogen (in nitrates), . 

 32. pounds of potassium oxide, . 



Per cent. 



16.65 



12.53 



8.44 



.98 



3.11 



2.93 



.29 



1.60 



5.10 



$16 88 



1 76 



2 80 

 111 72 



1 04 

 1 36 



$35 56 

 Siockbridge''s Mamires (Tobacco.) 



(Collected of C. F. Brown, Noribampton, 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. 



Per cent. 



Moisture at 100° C , 14.98 



Total phosphoric acid, 11.55 



Soluble phosphoric acid, 6.17 



Reverted phosphoric acid, 1.18 



Insoluble phosphoric acid, 4.20 



Nitrogen (in organic matter), 2.10 



Nitrogen (in nitrates), 1.09 



Potassium oxide, 5.09 



Calcium oxide, 16.26 



Insoluble matter, 6.39 



