366 



BOAED OF AGRICULTURE. 



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

 ric acid, 4 to 7 per cent. ; ammonia, 3 to 4 per cent, 

 (equivalent to nitrogen, 2.5 to 3.3 per cent.). 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, . 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : 



108.8 pounds of soluble phosphoric acid, 

 35.2 pounds of reverted phosphoric acid, 

 34.2 pounds of insoluble phosphoric acid, 

 82. pounds of potassiiun oxide, . 

 56. pounds of nitrogen. 



Charles H. North's Animal Fertilizer. 

 (Collected of Charles H. North, Somerville, Mass.) 

 No guaranty given. 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoinc acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen, 

 Insoluble matter, . 



Valuation per two thousand pounds : 



77.6 pounds of reverted phosphoric acid, 

 133.2 pounds of insoluble phosphoi-ic acid, 

 120 4 pounds of nitrogen. 



Per cent. 



16.13 

 8.91 

 5.44 

 1.76 

 1.71 

 4.10 

 2.80 

 4.03 



$8 70 



2 64 

 1 03 



3 49 

 9 52 



$25 38 



Per cent. 



11.06 



1054 



none. 



3.88 



6.66 



6.02 



.52 



$5 82 



4 00 



20 47 



$30 29 

 Soluble Pacific Guano. 



(Collected of Pease & Easterbrook, Fall River, Mass.) 



Guaranteed composition : Moisture, 15 to 18 per cent. ; 

 total phosphoric acid, 12 to 14 per cent. ; soluble phosphoric 

 acid, Q\ to 8 per cent. ; reverted phosphoric acid; 1^ to 3 

 per cent. ; insoluble phosphoric acid, 2 to 4 per cent. ; po- 

 tassium oxide, 2 to 3 per cent. ; nitrogen, 2 to 3 per cent, 

 (equivalent to ammonia, 2\ to 3|^ per cent.). 



