376 



BOARD OF AGRICULTURE. 



Valuation per two thousand pounds : 



13.4 pounds of soluble phosphoric acid, 

 67.2 pounds of reverted jahosphoric acid, 

 60.8 pounds of insoluble 2:)hosphoric acid, 

 171.8 jDounds of nitrogen, 



37 14 



Lister Brothers' United States Phosphate. 

 (Collected of W. S. Westcott, Amherst, Mass.) 



Guaranteed composition : Soluble and available phospho- 

 ric acid, 6 to 7 per cent. ; insoluble phosphoric acid, 1 to 1^^ 

 per cent. ; potassium oxide, 2 to 2| per cent. ; ammonia, 1 

 to 2 per cent, (equivalent to nitrogen, .82 to 1.65 per cent.). 



Per cent. 



Moisture at 100° C, 17.68 



Total phosphoric acid, , 

 Soluble phosphoric acid, 

 Reverted phosphoi'ic acid, 

 Insoluble phosj^horic acid. 

 Potassium oxide, .... 



Nitrogen, 



Insoluble matter, ... 



Valuation per two thousand pounds : 



131 8 pounds of soluble phosphoric acid, 

 31.6 pounds of reverted i^hosiihoric acid, 

 15. pounds of insoluble phosi^horic acid, 

 50. pounds of potassium oxide, 

 38 6 pounds of nitrogen, 



$22 05 

 Lister's Ammoniated Dissolved Bone Phosphate. 

 (Collected ofW. S. Westcott, Amherst, Mass.) 



Guaranteed composition : Available phosphoric acid, 8 to 

 10 per cent. ; insoluble phosphoric acid, 2 to 3 per cent. ; 

 potassium oxide, \\ to 2 per cent. ; ammonia, 2 to 2^ per 

 cent, (equivalent to nitrogen, 1.6 to 2 per cent.). 



