$26 BOARD OF AGRICULTURE. 



H. J. Baker & Bro.'s Pelican Bone Fertilizer. 

 (Collected of T. E. Hall & Co., Pittsfield, Mass.) 



Guaranteed composition : Soluble phosphoric acid, 7^ to 

 9^ per cent. ; reverted phosphoric acid, 8 to 10 per cent. ; 

 potassium oxide, 2.25 to 3 per cent. ; ammonia, 2.25 to 

 3.75 per cent, (equivalent to nitrogen, 1.85 to 3.09 per 

 cent.). 



Per ceut. 



Moisture at 100° C, 17.40 



Total phosphoric acid, 10.62 



Soluble phosphoric acid, . " 9.47 



Reverted phosphoric acid, . . . . , . 1.15 



Insoluble phosphoric acid, none. 



Potassium oxide, 2.45 



Nitrogen, 3.06 



Insoluble matter, 1.08 



Valuation per two thousand pounds : — 



149.4 pounds of soluble phosphoric acid, . . $11 95 



23.0 pounds of reverted phosphoric acid, . . . 1 73 



49.0 pounds of potassium oxide, 2 08 



61.2 pounds of nitrogen, 10 71 



S26 47 



Chittenden's Universal Phosphate. 

 (Collected of T. E. Hall & Co., Pittsfield, Mass.) 



Guaranteed composition : Total phosphoric acid, 11 to 12 

 per cent. ; available phosphoric acid, to 11 per cent. ; 

 potassium oxide, 2 to 3 per cent. ; ammonia, 2.5 to 3.5 per 

 cent, (equivalent to nitrogen, 2.1 to 2.9 per cent.). 



Per cent. 



Moisture at 100° C, 12.46 



Total phosphoric acid, 13.82 



Soluble phosphoric acid, 5.79 



Reverted phosphoric acid, 3.65 



Insoluble phosphoric acid, 4.38 



Potassium oxide, 2.34 



Nitrogen, 3.35 



Insoluble matter, 6.20 



