344 



BOARD OF AGRICULTURE. 



Valuation per ton of two thousand pounds : — 



432.4 pounds of phosphoric acid . 

 72.2 pounds of nitrogen .... 



n. 



Moisture lost at 100° C. 

 Organic and volatile matter 

 Ash constituents . 

 Total phosphoric acid 

 Total nitrogen 

 Insoluble matter 



Valuation per ton of two thousand pounds 



230 pounds of phosphoric acid 

 34.8 pounds of nitrogen .... 



Darlin(fs Lawn- Dressing. 

 CCoUected by JJessis. Parker & Gaunet, Springfield, Mixss.) 



Moisture 



Organic and volatile matter 



Ash constituents . 



Nitrogen 



Total phosphoric acid 



Potassium oxide 



Soluble phosphoric acid . 



Reverted phosphoric acid 



Insoluble phosphoric acid 



Insoluble matter . 



$22 15 



Per cent. 



9.58 



41.39 



58.61 



3.15 



14.62 



7.02 



1.39 



4.16 



9.07 



1.00 



Valu-ation per ton of two thousand pounds 



27.8 pounds of soluble phosphoric acid . 



83.2 pounds of reverted phosphoric acid 

 181.4 pounds of insoluble phosphoric acid 



63 pounds of nitrogen 

 140.4 pounds of potassium oxide . 



$43 98 

 Riverside Superphosphate. 



(J. O. Whitten, Cambridge, Mass. ; collected of George Upton, Esq., Boston, Mass.) 



Per cent. 



Moisture at 100°-105° C 6.70 



Organic and volatile matter ...... 49.30 



Ash constituents . . . . . . . .50.70 



Total phosphoric acid 18 13 



