808 



BOAED OF AGEICULTURE. 



Moisture at 100° C, 

 Total phosphoric acid, 

 Soluble phosphoric acid, 

 Reverted phosphoric acid, 

 Insoluble phosphoric acid, 

 Potassium oxide, 

 Nitrogen (in organic matter). 

 Nitrogen (in ammonia salts) , 

 Nitrogen (in nitrates), . 

 Insoluble matter, 



Per cent. 



13.46 



13.96 



.68 



2.44 



10.94 



4.39 



2.14 



.64 



.28 



6.23 



Valuation per two thousand pounds : — 



11.6 pounds of 

 48.8 pounds of 

 218.8 pounds of 

 87.8 pounds of 

 42.8 pounds of 

 12.8 pounds of 

 6.6 pounds of 



$31 62 



Quinnipiac Go's Phosphate. 



(Collected of Robinson & Brooks, Palmer, Mass.) 



Guaranteed composition : Nitrogen, 2^ to 3| per cent, 

 (equivalent to ammonia, 3 to 4 per cent. ) ; insoluble phos- 

 phoric acid, 1 to 3 per cent. ; soluble and reverted phos- 

 phoric acid (available), 8 to 10 per cent. ; potassium oxide, 

 2 to 3 per cent. 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Potassium oxide. 



Valuation per two thousand pounds : 



139.4 pounds of soluble phosphoric acid, 

 15.2 pounds of reverted phosphoric acid, 

 88.6 pounds of insoluble phosphoric acid, 

 63.6 pounds of nitrogen, .... 

 49.4 pounds of potassium oxide, . 



J31 87 



