COMMERCIAL FERTILIZERS. 



307 



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 : — 



89.6 pounds of soluble phosphoric acid, 

 28.8 pounds of reverted phosphoric acid, 

 58. pounds of insoluble phosphoric acid, 

 131. pounds of potassium oxide, 

 82. pounds of nitrogen. 



H. J. Baker & Bros. Grass and Lawn Dresser. 

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



No guaranty obtained. 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosj^horic acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, 

 Nitrogen (in organic matter), 

 Nitrogen (in ammonia salts), 

 Nitrogen (in nitrates), . 

 Insoluble matter, 



Valuation per two thousand pounds : 



13.3 pounds of 



14.4 pounds of 

 14.8 pounds of 



117.4 pounds of 



49.4 pounds of 



33.6 pounds of 



6.8 pounds of 



soluble phosphoric acid, 

 reverted phosphoric acid, 

 insoluble phosphoric acid, 

 potassium oxide, 

 nitrogen (in organic matter) , 

 nitrogen (in ammonia salts), 

 nitrogen (in nitrates), . 



Per cent. 

 15.20 



8.82 

 4.48 

 1.44 

 2.90 

 6.55 

 4.10 

 2.95 



$8 96 

 2 59 

 2 61 

 6 57 



16 40 



$36 13 



Per cent. 



17.40 



8.11 



6.65 



.72 



.74 



5.87 



2.47 



1.68 



.34 



2.02 



$13 30 

 1 30 

 67 

 99 

 88 

 39 

 22 



$38 75 



L. B. Darling^s Animal Fertilizer. 

 (Collected of Parker & Gannett, Boston, Mass.) 



Guaranteed composition : Nitrogen, 4 to 6 per cent. ; 

 phosphoric acid, 10 to 12 per cent. ; potassium oxide, 5 to 

 6 per cent. 



