COMMERCIAL FERTILIZERS. 



349 



Per cent. 



Calcium oxide, 3i.43 



Potassium oxiile, 2 49 



Insoluble matLer, 3.35 



This sample is less valuable than the previous sample 

 is desirable that wood-ash should be sold by an analysis. 



IV. 



Ashes. 



it 



(Sent on for examination from Concord.) 



Moisture, .... 

 Organic and volatile matter, 

 Ash constituents, 

 Potassium oxide, 

 •Ferric oxide, 

 Phosphoric oxide. 

 Calcium oxide, . 

 Insoluble matter. 



Per cent. 



1.59 

 29.50 

 70.50 



0.25 

 Traces 

 Traces 

 18.00 

 36.02 



The composition of this article (IV.) corresponds more 

 with that of a leached wood-ash. 



Soot. 



(Sent on for examination from Concord.) 



Per cent. 



Moisture, 5.54 



Organic and volatile matter (not moisture), . . . 16.36 



Ash cor.stituents, 78 10 



Potassium oxide, 1.83 



Ferric oxide, Traces. 



Insoluble matter, 35.34 



The source of this material was not stated ; the large 

 percentage of insoluble matter, and the small percentage of 

 potassium oxide point toward coal-ash as the principal con- 

 stituent of the article. 



Onondaga Oypsum. 



(Sheldon & Newcombe, Greenfield.) 



Moisture, . 

 Calcium oxide, 

 Sulphuric acid, . 

 Magnesium oxide, 

 Chlorin?, . 

 Insoluble matter, 



Per cent. 



0.85 

 30.14 

 32.69 

 6.06 

 0.33 

 8.28 



