236 



BOARD OF AGRICULTURE. 



Vlir. 



Bradler/s XL Superphosphate of Lime. 

 (Collected of Mr. Wescott, Amherst, 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 

 Potassium oxide 

 Insoluble matter, sand, etc. 



Valuation per ton of two thousand pounds : — 



175.6 pounds of soluble phosphoric acid 

 1.8 pounds of reverted phosphoric acid 

 32.4 pounds of insoluble phosphoric acid 

 66.4 pounds of nitrogen 

 98.4 pounds of potassium oxide . 



Per cent. 



17.32 



43.97 



66.03 



10.49 



8.78 



.09 



1.62 



3.32 



4.92 



2.55 



$21 07 



16 



1 62 



13 28 



4 43 



$40 56 



IX. 



E. Frank Coe^s Ammoniated XX Superphosphate. 



(Collected of Messrs. Arms & Co., Greenfield, Maes.) 



Per cent. 



Moisture lost at 100° C 



Organic and volatile matter . . . . .57.99 



Ash constituents ....... 42.01 



Total phosphoric acid ...... 12.97 



Soluble phosphoric acid ..... 9.96 



Reverted phcsphoric acid . . . . . 1.18 



Insoluble pliosphoric acid ..... 1.83 



Total nitrogen 2.82 



Insoluble matter . . . . . . . 1.82 



Valuation per ton of two thousand pounds : — 



199.2 pounds of soluble phosphoric acid . . $23 91 



23.6 pounds of reverted phosphoric acid . . 2 13 



30.6 pounds of insoluble phosphoric acid . . 2 20 



50.4 pounds of nitrogen 11 28 



$39 52 



