238 



BOARD OF AGRICULTURE. 



XII. 



Bay- State Ammoniated Superphosphate. 



(J. Tucker, Boston, Mass.; collected of Messrs. Clark & Son, Worcester, 



Mass.) 



Per cent. 



Moisture lost at 100° C. 

 Organic and volatile matter 

 Ash constituents . 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Insoluble phosjihoric acid 

 Nitrogen 



Valuation per ton of two thousand pounds : — 



177 pounds of soluble pliosphoric acid . 

 32 pounds of insoluble phosphoric acid 

 44 pounds of nitrogen 



?21 24 

 1 92 



8 80 



$31 96 



XIII. 



'■'■ Americus''^ Ammoniated Bone Superphosphate. 



(Messrs. Rafferty & Williams, New York ; collected of Messrs. Houghton, 



Garland, & Sears, Worcester, Mass.) 



Per cent. 



14.53 



47.59 



52.41 



12.47 



7.32 



1.61 



3.54 



3.50 



2.43 



4.66 



Moisture lost 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 : — 



146 4 pounds of soluble phosphoric acid 

 32.2 pounds of reverted phosphoric acid 

 70.8 pounds of insoluble phosphoric acid 

 48.6 pounds of potassium oxide 

 70 pounds of nitrogen 



$40 91 



