COMMERCIAL FERTILIZERS. 



347 



Price per ton of 

 2,0(X) pounds, 

 Name of Material. in dollars. 



Acid Phosphate, containing from 12 to 14 per cent, of soluble 



phosphoric acid, 25-28 



Lobos Gua 0, yielding from 4 to 6 per cent, of ammonia, and 



containing from 18 to 20 per cent, of phosphoric acid, . 55-60 



Peruvian Guano (guaranteed), yielding from G to 8 per cent. 

 of ammonia, and containing from 12 to 14 per cent, of 

 phosphoric acid, . . 60-65 



Muriate of Fotish, containing from 80 to 85 per cent, of that 

 compound, equal to from 50 to 53.7 per cent, of potassium 

 oxide 36-40 



Muri (te of Potash (Doughlasshall), containing 80 per cent, of 

 that compound, equal to 50 per cent, of potassium oxide, 

 and about 10 per cent, of sulphate of magnesia, . . 40-45 



Sulphate of Polassa, containing 80 per cent, of that com- 

 pound, which is equal to 43.3 per cent, of potassium 

 oxide, 60-65 



Sulphate of Potassa, containing from 60 to 65 per cent, of that 

 compound, which is equal to 32.3 to 35 per cent, of 

 potassium oxide, ........ 40-45 



German Pota.-h Salt, containing from 28 to 32 per cent, of 

 sulphate of potassa, which is equal to from 15 to 17.3 per 

 cent, of potassium oxide, 18-20 



Kainit (low grade), containing 22 to 26 per cent, of sulphate 

 of potassa, which is equal to 11.9 to 14 per cent, of 

 pota^^sium oxide, . . 9-12 



Sulphate of Magnesia (Kieserite), containing from 60 to 70 



per cent, of that compound, 18-22 



Sulphate of Magnesia, containing from 50 to 55 per cent, of 



that compound, 14-15 



Fine-ground Gypstim, containing from 95 to 98 per cent, of 



that compound, 9-10 



Muriate of Potash. 



(W. H. Earle, Worcester, Mass.) 



Moisture, . 

 Potassium oxide, 

 Sodium oxide, . 

 Magnesium oxide. 

 Sulphuric acid, . 

 Calcium oxide, . 



Per cent. 



2.15 



50.25 



11.26 



0.90 



0.50 



Trace 



This potash compound is more and more used as a potassa 

 source in field and garden cultivation. 



