234 



BOARD OF AGRICULTURE. 



Valuation per ton of two thousand pounds : — 



100.4 pounds of soluble phosphoric acid 

 28 pounds of insoluble phosphoric acid 

 76 pounds of nitrogen ..... 



178.4 pounds of potassium oxide .... 



$37 46 



IV. 



Bowker's Hill and Drill Phosphate. 

 (Collected of Mr. Wescott, Amherst, Mass.) 



Moisture lost at 100° C. 

 Organic and volatile matter 

 Ash constituents . 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted pliosphoric acid 

 Insoluble phosphoric acid 

 Total nitrogen 

 Insoluble matter . 



Valuation per ton of two thousand pounds : — 



174 pounds of soluble phosphoric acid 

 32 pounds of reverted phosphoric acid 

 57 pounds of insoluble phosphoric acid 

 58.2 pounds of nitrogen 



Per cent. 



9.34 



57.89 



42.11 



13.15 



8.70 



1.60 



2.85 



2.91 



10.48 



$20 88 



2 88 



3 42 

 11 64 



$38 82 



V. 



Bosworth Brothers' Ammoniated Bone Superphosphate. 

 (Collected of Messrs. J. Clark & Son, Worcester, Mass.) 



Moisture lost at 100° C. 

 Organic and volatile matter 

 Ash constituents . 

 Total phosphoric acid . 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Total nitrogen 

 Insoluble matter . 



A'aluation per ton of two thousand pounds : — 



105.4 pounds of soluble phosphoric acid 



82.2 pounds of reverted phosphoric acid 

 112 4 pounds of insoluble phosphoric acid 



49.8 pounds of nitrogen 



$36 76 



