Analyses of Commercial Fertilizers. 

 I. 



ANALYSES OF COMMERCIAL FERTILIZERS AND 



MANORIAL SUBSTANCES SENT ON FOR 



EXAMINATION. 



692—695. WOOD ASHES. 



I. Sent on by F. F. O'Neil, N. Sudbury, Mass. 



II. Sent on by Jonathan Ames, So. Lincoln, Mas*. 



III. Sent on by F. C. Davis, E. Longmeadow, Mass. 



IV. Sent on by B. W. Brown, Concord, Mass. 



Fer Cent. 

 I. 



Moisture at 100° C, 12.88 



Calcium oxide, 35.41 



Magnesium oxide, 2.75 



Ferric oxide, 1.65 



Potassium oxide, 6.17 



Phosphoric acid, 1.83 

 Insoluble matter (before calcination) 12.69 



"■ " (after calcination) , 11.60 



696—697. POTASH SALTS. 



I. Muriate of potash, sent on by Anson Wheeler, Concord, Mass. 



II. Sulphate of potash, sent on by J. F. Barn, Feeding Hills, Mass. 



Moisture at 100° C. 

 Magnesium oxide, 

 Potassium oxide, 

 Chlorine, 

 Sulphuric acid, 

 Insoluble matter. 



698. SALTPETRE WASTE. 



Sent on by Coolidge Bros., So. Sudbury, Mass. 



JPer Cent, 



Moisture at 100° C, .38 



Calcium oxide, .84 



