368 



BOARD OF AGRICULTURE. 



Church's Standard Fertilizer. 

 (Collected of Globe Coal Company, Fall River, Mass.) 



Guaranteed composition : Total phosphoric acid, 11 to 12 

 per cent. ; soluble phosphoric acid, 6 to 7 per cent. ; re- 

 verted phosphoric acid, 1 to 2 per cent. ; insoluble phospho- 

 ric acid, 3 to 4 per cent. ; potassium oxide, 4 to 5 per cent. ; 

 nitrogen, 2 to 3 per cent, (equivalent to ammonia, 3 to 4 

 per cent. ) . 



Moisture at 100° C, . 

 Total phosphoric acid. 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . . . 



Per cent. 

 21.66 

 10.60 

 7.36 

 1.41 

 1.73 

 3.54 

 3.33 

 5.10 



Valuation per two thousand pounds : — 



147.2 pounds of soluble phosphoric acid, 

 28.2 pounds of reverted phosphoric acid, 

 34.6 pounds of insoluble phosphoric acid, 

 70.8 pounds of potassium oxide, . 

 66.6 pounds of nitrogen, 



$29 27 



Soluble Pacific Ouano. 

 (Collected of H. D. Mantor & Co., Plymouth, Mass.) 

 Guaranteed composition : Moisture 15 to 18| per cent. ; 

 total phosphoric acid, 12 to 14 per cent. ; soluble phosphoric 

 acid, 6^ to 8 per cent. ; reverted phosphoric acid, 1-| to 3 

 per cent. ; insoluble phosphoric acid, 2 to 4 per cent. ; po- 

 tassium oxide, 2 to 3 per cent. ; nitrogen, 2 to 3 per cent, 

 (equivalent to ammonia, 2^ to 3^ per cent.). 



Per cent. 



Moisture at 100° C, 20.56 



Total pho.sphoric acid, 12.61 



Soluble phosphoric acid, 8.32 



Reverted phosphoric acid, 1.76 



Insoluble phosjihoric acid, 2.o3 



Potassium oxide, 1.60 



Nitrogen, 2.10 



Insoluble matter, 8.74 



