240 



BOARD OF AGRICULTURE. 



XVI. 



Riverside Superphosphate. 



(J. A. Whitten, Cambridge, Mass.; collected of George Upton, Boston, 



Mass.) 



Per cent. 



13.34 



45.87 



54.13 



18.64 



1.46 



5.13 



12.05 



4.30 



.94 



Moisture lost at 100° C. 

 Organic and volatile matter 

 Asli constituents . 

 Total phosphoric acid . 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Total nitrogen 

 Insoluble matter . 



Valuation per ton of two thousand pounds : — 



29.4 pounds of soluble phosphoric acid 

 102.6 pounds of reverted phosphoric acid 

 241 pounds of insoluble phosphoric acid 



86 pounds of nitrogen 



$43 63 



XVII. 



Bradleifs Sea-Fowl. 

 (Collected of Mr. "Warner, Greenfield, 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 . 



Pi-T cent. 



12.77 



49.53 



50.47 



10.38 



7.28 



.41 



2.69 



3.27 



3.16 



5.72 



Valuation per ton of two thousand pounds : — 



145.6 pounds of soluble phosphoric acid 

 8.2 pounds of reverted phosphoric acid 

 53.8 pounds of insoluble phosphoric acid 

 65.4 pounds of nitrogen 

 73.2 pounds of potassium oxide . 



«37 82 



