516 



BOAED OF AGRICULTUKE. 



^ 



to 3| 



ammonia 



2 to 2.9 per cent.) 



per cent, (equivalent to nitrogen, 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds 



83.8 pounds of 

 75.6 pounds of 

 40.4 pounds of 

 52.4 i^ounds of 

 CO.O i^ounds of 



soluble phosphoric acid, 

 reverted phosphoric acid, 

 insoluble phosphoric acid, 

 potassium oxide, 

 nitrogen. 



Per cent. 



15.97 

 9.99 

 4.19 

 3.78 

 2.02 

 2.62 

 3.00 

 .63 



?26 31 



Maynard's Perfect Mineral Fertilizer. 

 (Maynard Fertilizer Company, Lawrence, Mass. ; collected at works.) 



Guaranteed composition : Moisture, 19.4 percent.; total 

 phosphoric acid, 1.37 per cent. ; potassium oxide, .44 per 

 cent. ; insoluble matter, 5.15 per cent. ; chlorine, 7.69 per 

 cent. ; sulphuric acid, 2.61 per cent. ; carbonic acid, 22.25 

 per cent. ; sodium oxide, 7.55 per cent. ; calcium oxide, 

 33.39 per cent. ; ferric oxide, 1.03 per cent. 



Moisture at 100° C, 

 Total phosphoric acid. 

 Potassium oxide, . 

 Calcium oxide. 

 Sodium oxide. 

 Ferric oxide, . 

 Magnesium oxide, . 

 Chlorine, 

 Sulphuric acid. 

 Carbonic acid. 

 Insoluble matter. . 



Per cent. 



16.76 

 1.10 

 1.12 



29.82 

 8.25 

 .82 

 3.33 

 7.20 

 5.19 



15.51 



Consists of a mixture of common salt, wood ashes and 

 gypsum ; valuation depends on local conditions. 



