CO^OIERCIAL FERTILIZERS. 



201 



Valuation per two thousand pounds : 



97 6 pounds of soluble phosphoric acid, 

 1 4 pounds of reverted phosphoric acid, 

 51.2 pounds of insoluble phosphoric acid, 

 90.4 pounds of potassium oxide, 

 54. pounds nitrogen, .... 



Fish and Potash. 



74 



11 



3 07 



3 84 



12 42 



$30 18 



(Geo. W. Miles* Co., Milford, Ct. ; collected of P. F. Bridges, South Deerfield, 



Mass.) 



Guaranteed composition : total phosphoric acid, 5 to 8 

 per cent. ; potassium oxide, 3 to 5 per cent. ; nitrogen, 2.5 

 to 3.5 per cent. 



Moisture at 100° C, . 

 Total phosphoric aci'd. 

 Soluble phosphoric acid. 

 Reverted phosphoric acid 

 Insoluble phosphoric acid, 

 Potassium oxide. 

 Nitrogen, . . . . 

 Insoluble matter, 



,} 



Per cent. 



27.69 



4.52 



1.14 



3.38 

 2.57 

 2.77 

 2.00 



Valuation per two thousand pounds : — 



22.8 pounds of reverted phosphoric acid, 

 67.6 pounds of insoluble phosphoric acid, 

 51.4 pounds of potassium oxiSe, 

 55.4 pounds of nitrogen, 



Fish and Potash. 



$1 82 

 4 06 

 2 18 



12 74 



120 80 



(Geo. W. Miles' Co., Milford, Ct.; collected of P. F. Bridges, South Deerfield, 



Mass.) 



Guaranteed composition : soluble and reverted phosphoric 

 acid (available), 5 to 8 per cent. ; potassium oxide, 4 to 6 



