364 



BOARD OF AGRICULTURE. 



Ammoniated Superphosphate. 



(Preston & Bon Fertilizer Co., New Tork; collected of Charles Parsons, Jr., Conway, Mass.) 



Per cent. 



12.17 

 44.33 



Moisture, .... 

 Organic and volatile matter, 

 Ash constituents, 

 Total phosphoric acid. 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Nitrogen, . . . ■ . 

 Potassium oxide. 

 Insoluble matter. 



65.67 

 12.42 



7.40 

 1.60 

 3.42 

 2.69 

 .50 

 8.78 



Valuation per ton of two thousand pounds : — 



148.0 pounds of soluble phosphoric acid,. 

 32.0 pounds of reverted phosphoric acid, 

 68.4 pounds of insoluble, 

 53.8 pounds of nitrogen, .... 

 10.0 pounds of potassium oxide, 



Bowker's Phosphate. 



(Collected of Messrs. Puffer & Wilder, Springfield, 



Moisture, .... 

 Organic and volatile matter. 

 Ash constituents. 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid. 

 Nitrogen, .... 

 Potassium oxide, 

 Insoluble matter, 



$18 50 



2 88 



4 10 



12 91 



50 



$38 89 



Per cent. 



13.58 



49.91 



50.09 



8.00 



3.39 



2.43 



2.18 



3 00 



3.86 



4.06 



Valuation per ton of two thousand pounds : — 



67.8 pounds of soluble phosphoric acid, . 

 48.6 pounds of reverted phosphoric acid, 

 43.6 pounds of insoluble phosphoric acid, 

 60.0 pounds of nitrogen, .... 

 77.2 pounds of potassium oxide, 



$33 73 



