510 



BOAED OF AGRICULTUEE. 



Valuation per two thousand pounds : — 



116.4 pounds of soluble phosphoric acid, 

 112.0 pounds of reverted phosphoric acid, 

 24.2 poirnds of insoluble phosphoric acid, 

 89.2 pounds of potassiiuu oxide, . 

 71.6 pounds of nitrogen, 



$9 31 



8 40 



73 



3 79 



12 53 



$34 76 



BrecJc's Lawn Dressing. 

 (Collected of Joseph Breck & Sons, Boston, Mass.) 



Guaranteed composition : Soluljle and reverted phos- 

 phoric acid, 8 to 9 per cent. ; potassium oxide, 4 to 6 per 

 cent. ; ammonia, 5 to 6 per cent, (equivalent to nitrogen, 

 4.1 to 5 per cent.). 



Per cent. 



Moisture at 100° C, 9.20 



Total phosphoric acid, 10.62 



Soluble phosphoric acid, ...... 7.38 



Reverted jihosphoric acid, 1.39 



Insoluble phosphoric acid, 1.85 



Potassium oxide, 5.38 



Nitrogen, . . . . . . . . . 5.31 



Insoluble matter, 2.98 



Valuation per two thousand pounds : — 



147.6 pounds of soluble phosphoric acid, 



27.8 pounds of reverted jihosphoric acid, 



37.0 pounds of insoluble phosphoric acid, 

 107.6 pounds of potassium oxide, . 

 106.2 pounds of nitrogen. 



?38 17 



Cumberland SuperpJiospJiate. 



(Cumberland Bone Company, Portland, Me. ; collected of Joseph Breck & Sons, 



Boston, Mass.) 



Guaranteed composition: Total phosphoric acid, 11 to 14 

 per cent. : soluble phosphoric acid, 5 to 7 per cent. ; re- 

 verted phosphoric acid, 1 to 2 per cent. ; insoluble phos- 

 phoric acid, 3 to 4 per cent. ; potassium sulphate, 2 to 3 

 per cent. ; nitrogen, 2 to 3 per cent, (equivalent to am- 

 monia, 2.43 to 3.08 per cent.). 



