COMMERCIAL FERTILIZERS. 



315 



22.4 pounds of potassium oxide, .... 

 66.2 pounds of nitrogen, 



Glidden & Curtis' Soluble Pacific Guano. 

 (Collected of W. II. Earle, Worcester, Mass.) 



$0 95 

 11 24 



$31 25 



Guaranteed composition : Moisture, 10 to 20 per cent. ; 

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

 phoric acid, 6|^ to 8 per cent. ; reverted phosphoric acid, 1^ 

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

 monia, 2^ to 3| per cent.) ; potassium oxide, 2 to 2>\ per 

 cent. 



Per cent. 



Moisture at 100° C, 10.10 



Total phosphoric acid, . 

 Sohible phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Nitrogen (in organic matter), 

 Nitrogen (in nitrates), . 

 Potassium oxide. 

 Insoluble matter, 



13.43 

 8.57 



.74 

 4.12 

 2.32 



.47 

 2 81 

 6.76 



Valuation per two thousand pounds : — 



171.4 pounds of soluble phosphoric acid, 

 14.8 pounds of reverted phosphoric acid, 

 82.4 pounds of insoluble phosphoric acid, . 

 46.4 pounds of nitrogen (in organic matter), 

 9.4 pounds of nitrogen (in nitrates), . 

 56.2 pounds of potassium oxide, . 



DoWs Common Sense Ferlilizer, No. 2. - 

 (CoUeeted of E. H, Wood & Co., Lowell, Mass.) 



$35 54 



Guaranteed composition : Nitrogen, 2 to 5 per cent, 

 phosphoric acid, 4 to 6 per cent. ; potassium oxide, 3 to i 

 per cent. 



Per cent. 



Moisture at 100° C, 11.55 



Total phosphoric acid, 7.33 



Soluble phosphoric acid, .99 



Reverted phosphoric acid, 2.60 



Insoluble phosphoric acid, 3.75 



Potassium oxide, 3.51 



Nitrogen, 3.14 



Insoluble matter, 15.25 



