COMMERCIAL FERTILIZERS. 



355 



Nitrogen 

 Potassium oxide 

 Insoluble matter 



Per cent. 



2.70 



None. 



4.40 



Valuation per ton of two thousand pounds 



150.4 pounds of phosphoric acid 

 26.8 pounds of reverted phosphoric acid 



10G.2 pounds of insoluble phosphoric acid 

 54 pounds of nitrogen .... 



Bay-State Bone Superphosphate. 

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



Moisture 



Organic and volatile matter 

 Ash constituents . 

 Total phosphoric acid 

 Soluble phosphoric acid . 

 Reverted phosphoric acid 

 Insoluble phosphoric acid 

 Nitrogen 

 Potassium oxide 

 Insoluble matter 



Valuation per ton of two thousand pounds 



165.6 pounds of soluble phosphoric acid 

 20.6 pounds of reverted phosphoric acid 

 18.8 pounds of insoluble phosphoric acid 

 52.8 pounds of nitrogen 

 23.2 pounds of potassium oxide . 



118 80 



2 41 



6 37 



12 96 



^40 54 



Per cent. 



24.86 



64.44 



35.56 



10.25 



8.28 



1.03 



.94 



2.64 



1.16 



1.26 



$20 70 



1 85 



1 13 



12 67 



1 16 



137 51 



