306 



BOARD OF AGRICULTURE. 



Valuation per two thousand pounds. : — 



90 2 pounds of soluble phosphoric acid, 

 58.2 pounds of reverted phosphoric acid, 

 83.6 pounds of insoluble phosphoric acid, 

 23 6 pounds of potassium oxide, 

 42.8 pounds of nitrogen (in organic matter), 



m 58 



Quinnipiac Go.''s Extra Superphosphate. 

 (Collected of B. L. Bragg & Co., Springfield, Mass.) 



Guaranteed composition: Nitrogen 1| to 2|^ per cent, 

 (equivalent to ammonia, 2 to 3 per cent.) ; total phosphoric 

 acid, 10 to 12 per cent. ; soluble phosphoric acid, 6 to 8 

 per cent., available phosphoric acid, 8 to 10 per cent. ; sul- 

 phate of potash, 2 to 4 per cent, (potassium oxide, 1.2 to 

 2.4 per cent.). 



Per cent. 



Moisture at 100° C, ....'... 19.88 

 Total phosphoric acid, 11 61 



Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide. 

 Nitrogen (in ammonia salts), 

 Nitrogen (in organic matter), 

 Insoluble matter, 



Valuation per two thousand pounds : — 



77.4 pounds of soluble phosphoric acid, 

 88.4 pounds of reverted phosphoric acid, 

 66.4 pounds of insoluble phosphoric acid, 

 41.2 pounds of potassium oxide, 

 46.6 pounds of nitrogen (in organic matter), 

 16.2 pounds of nitrogen (in ammonia salts), 



8.87 

 4 42 

 3.32 

 2.06 

 .81 

 2.33 

 6.98 



$7 74 

 7 96 



2 99 

 1 75 

 9 32 



3 56 



$33 32 

 Ohittendeii^s Complete Fertilizer (Corn). 

 (Collected of Puffer & Wilder, Springfield, Mass.) 



Guaranteed composition : Ammonia, 4|^ to 5| per cent, 

 (equivalent to nitrogen, 3.7 to 4.53 per cent.) ; total phos- 

 phoric acid, 8 to 10 per cent. ; soluble and reverted phos- 

 phoric acid (available), 6 to 8 percent.; potassium oxide, 

 5 to 7 per cent. 



