316 



BOAED OF AGRICULTURE. 



Valuation per two thousand pounds : — 



19.8 pounds of soluble phosphoric acid, 

 52. pounds of reverted phosphoric acid, 

 75. pounds of insoluble phosphoric acid, 

 70.2 pounds of potassium oxide, . 

 62.8 pounds of nitrogen, . . . 



$25 58 

 RandaWs Field and Farm Fertilizer. 

 (Boston Fertilizer Co., Boston, Mass. ; collected of W. E. Livingston.) 



Guaranteed composition: Total phosphoric acid, 10 to 14 

 per cent. ; soluble phosphoric acid, 7 to 8 per cent. ; re- 

 verted phosphoric acid, 1 to 2 per cent. ; nitrogen, 2 to 2.9 

 per cent, (equivalent to ammonia, 2| to 3|- per cent.); 

 potassium oxide, 2 to 3 per cent. ; moisture, 10 to 14 per 

 cent. 



Per cent. 



Valuation per two thousand pounds : — 



98.8 pounds of soluble phosphoric acid,! 

 QQ). pounds of reverted phosphoric acid, 

 42.6 pounds of insoluble phosphoric acid, 

 18. pounds of potassium oxide, . 

 41.8 pounds of nitrogen (in organic matter), 

 6.6 pounds of nitrogen (in ammonia salts), 



$28 31 

 Ames Rato Bone Superphosphate. 

 (Collected by Chas. H. Preston, Assistant of Inspector.) 



Guaranteed composition : Total phosphoric acid, 13 to 15 

 per cent. ; soluble phosphoric acid, to 11 per cent. ; re- 

 verted phosphoric acid, 2 to 3 per cent. ; ammonia, 3|- to 4| 

 per cent, (equivalent to nitrogen, 2.9 to 3.7 per cent.). 



