COMMERCIAL FERTILIZERS. 



197 



Ammonium Sulphate. 

 (Collected of G. P. Smith, Sunderland, Mass.) 



Guaranteed composition : Ammonia 24 to 25 per cent, 

 (equivalent to nitrogen 19.75 to 20.50 per cent.). 



Per cent. 



Moisture at 100° C, 0.23 



Ammonia (equivalent to nitrogen, 20.4), . . . 24.80 



Sulphuric acid, , .61.60 



Insoluble matter, .05 



Valuation per two thousand pounds, .... $106.08 



Green Mountain Odorless Fertilizer. 

 (Geo. W. Maynard, Lawrence, Mass. Sent on from Salem, Mass.) 



Per cent. 



Moisture at 100° C, 19.40 



Calcium oxide, 33.39 



Sodium oxide, 7,55 



Magnesium oxide, 2.47 



Potassium oxide, .44 



Ferric oxide, . . . 1 .03 



Phosphoric acid, 1.37 



Chlorine, 7.69 



Sulphuric acid, ........ 2.61 



Insoluble matter, 5.15 



This article consists of ashes, salt and lime, and corres- 

 ponds well with a sample tested during the past year. 



II. — Fish and Fish-Potash. 



Dry Fish. 



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



Mass.) 



Guaranteed composition : nitrogen 7 to 10 per cent. 



Moisture at 100° C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, -v 

 Reverted phosphoric acid,/ 

 Insoluble phosphoric acid, 

 Nitrogen, .... 



Per cent. 

 7.63 

 6.48 



Valuation per two thousand pounds : — 



43.2 pounds of reverted phosphoric acid, 

 86.4 pounds of insoluble phosphoric acid, 

 173. pounds of nitrogen, . . . . 



2.16 



4.32 

 8.65 



$3 46 



5 18 



39 79 



$18 43 



