COMMERCIAL FERTILIZERS. 



315 



22.4 pounds of potassium oxide, 

 56.2 pounds of nitrogen, 



$0 95 

 11 24 



$31 25 

 Glidden & Curtis'' Soluble Pacific Guano. 

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



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 3| per 

 cent. 



Per cent. 

 10.10 



Moisture at 100° C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid. 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid, 

 Nitrogen (in organic matter), 

 Nitrogen (in nitrates), . 

 Potassium oxide. 

 Insoluble matter. 



Valuation per two thousand pounds : — 



171.4 pounds of soluble phosphoric acid, 

 14.8 pounds of i-everted 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, . 



13.43 



8.57 

 .74 



4.12 



2.32 



.47 



2 81 

 6.76 



$35 64 



BoWs Common Sense Fertilizer, No, 2. 

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



Guaranteed composition: Nitrogen, 2 to 5 per cent.; 

 phosphoric acid, 4 to 6 per cent. ; potassium oxide, 3 to 5 

 per cent. 



Moisture at 100<^ C, 

 Total phosphoric acid, . 

 Soluble phosphoric acid, 

 Reverted phosphoric acid. 

 Insoluble phosphoric acid. 

 Potassium oxide, 

 Nitrogen, 

 Insoluble matter, 



Per cent. 



11.55 



7.33 



.99 



2.60 



3.75 



3.51 



3.14 



15.25 



