COMMERCIAL FERTILIZERS. 



359 



Ash constituents 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Potassium oxide 

 Insoluble matter 



Valuation per ton of two thousand pounds 



186 pounds of soluble phosphoric acid 

 27.2 pounds of reverted phosphoric acid 

 60.8 pounds of insoluble phosphoric acid 

 58.2 pounds of nitrogen 

 16.6 pounds of potassium 



Guy^s German Plant- Food for Flowers. 

 (Collected of Guy Brothers, Boston, Mass.) 



Moisture at 100° C. 

 Organic and volatile matter 

 Ash constituents 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Potassium oxide 

 Insoluble matter 



Valuation per ton of two thousand pounds : — 



156.2 pounds of soluble phosphoric acid . 

 14.2 pounds of reverted phosphoric acid 



7.8 pounds of insoluble phosphoric acid 

 168.6 pounds of nitrogen 



5.4 pounds of potassium oxide . . 



Per cent. 



43.62 

 14.20 

 9.30 

 1.86 

 3.04 

 2.91 

 .83 

 3.31 



$23 25 



2 45 



3 65 

 13 97 



83 



144 15 



$62 01 



Peat. 

 I. 



(Collected of Mr. Tillson, Massachusetts Agricultural College.) 



Per cent. 



Moisture at 100° C 85.34 



Vegetable matter 13.14 



Ash constituents 1.52 



Nitrogen ......... .41 



In air-dry state, 20 per cent moisture, 2.314 per cent nitrogen. 



