524 



BOARD OF AGRICULTURE. 



Dole's Perfect Food for Fruit Trbes and Vines. 



(Collected of M. A. Stone, Reading, Mass.) 



Guaranteed composition : Total phosphoric acid, 9 to 12 



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



potassium oxide, 8 to 10 per cent. ; nitrogen, 3 to 5 per 



cent, (equivalent to ammonia, 4 to 6.5 per cent.). 



Vex cent. 



Moisture at 100° C, 9.04 



Total iDhosphoric acid, 9.74 



Soluble phosphoric acid, 2.37 



Reverted phosphoric acid, 2.81 



Insoluble iDhosphoric acid, 4.56 



Potassium oxide 5.24 



Nitrogen, 2.44 



Insoluble matter, . . . . . . . . 6.66 



Valuation per two thousand pounds : — 



47.4 pounds of soluble phosphoric acid, 

 66.2 pounds of reverted j^hosphoric acid, 

 912. pounds of insoluble phosphoric acid, 

 104.8 poimds of potassium oxide, . 

 48.8 pounds of nitrogen, 



$3 79 

 4 22 

 2 74 

 4 45 

 8 54 



$23 74 



Bowker's Dissolved Bonehlack. 

 (Collected at Amherst, Mass.) 



Guaranteed composition : Total phosphoric acid, 15 to 18 

 per cent. 



Moisture at lOO'' C, 

 Total phosphoric acid, . 

 Soluble i)hosphorie acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Insoluble matter, . 



Per cent. 



1G.05 

 17.47 

 14.77 



2.00 

 ,71 



4.82 



Valuation per two thousand pounds : 



295.4 pounds of soluble phosphoric acid, 

 40.0 i^ounds of reverted i)hosphoric acid, 

 14.2 pounds of insoluble phosphoric acid. 



$23 63 



3 00 



43 



f27 06 



