324 



BOARD OF AGRICULTURE. 



Per cent. 



Insoluble phosphoric acid .60 



Potassium oxide ....... .24 



Sand, &c *. 3.60 



Valuation per ton of two thousand pounds : — 



62.6 pounds of nitrogen 

 147.8 pounds of soluble phosphoric acid 

 62.2 pounds of reverted phosphoric acid 

 12.0 pounds of insoluble phosphoric acid 

 4.8 pounds of potassium oxide . . 



IV. 



Russel Coe's Ammoniated Superphosphate. 



$36 77 



Valuation per ton of two thousand pounds : — 



68.0 pounds of nitrogen .... 



183 8 pounds of soluble phosphoric acid 

 17.0 pounds of reverted phosphoric acid 

 81.8 pounds of insoluble phosphoric acid 



V. 



$13 60 



22 06 



1 53 



4 91 



$42 10 



The " Americus Brand" of Ammoniated Bone Superphosphate. 



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

 Houghton, & Sears, Worcester, Mass.) 



Moisture at 100° C. 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Potassium oxide 

 Insoluble matter . . 



