368 



BOARD OF AGRICULTURE. 



Bone and Potash Phosphate. 



(Judson and Sparrow, Boston, Mass.) 



Moisture, .... 

 Volatile and organic matter, 

 Ash constituents, 

 Total phosphoric acid. 

 Soluble phosphoric acid. 

 Reverted phosphoric acid, 

 Insoluble phosphoi'ic acid, 

 Nitrogen, . 

 Potassium oxide, 

 Insoluble matter, 



Per cent. 



15 80 



60.00 



40.00 



11.23 



9.72 



.42 



1.09 



3.73 



4.03 



.58 



Valuation per ton of two thousand pounds : — 



194.4 pounds of soluble phosphoric acid, . . . $24 30 



8.4 pounds of reverted phosphoric acid, ... 76 



21.8 pounds of insoluble phosphoric acid, . . . 1 31 



74.6 pounds of nitrogen, 17 90 



80.6 pounds of potassium oxide, 4 30 



f48 30 



Quinniinac Co. Phosphate, 



(Collected of Wm. H. Earle, Worcester, Mass.) 



Moisture, .... 

 Organic and volatile matter. 

 Ash constituents. 

 Total phosphoric acid, 

 Soluble phosphoric acid, . 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, 

 Nitrogen, .... 

 Insoluble matter. 



Per cent. 



20.05 



53.00 



47.00 



10.55 



7.44 



.87 



2.24 



3.80 



3.31 



2.91 



Valuation per ton of two thousand pounds : — 



148.8 pounds of soluble phosphoric acid, . 

 17,4 pounds of reverted phosphoric acid, 

 44.8 pounds of insoluble phosphoric acid, 



66.2 pounds of nitrogen, 



76.0 pounds of potassium oxide, .... 



$42 55 



