WOOD ASHES. . 



229-232. I. Sent on from North Andover, Mass. 



II. Sent on from Westboro', Mass. 



III. Sent on from South Amherst, Mass. 



IV. Sent on from South Lancaster, Mass. 



Moisture at 100° C, 

 Potassium oxide, 

 Phosphoric acid, 

 Insoluble matter. 



Some fifty samples of wood ashes have been analyzed thus far 

 during the present year. The following statement contains the vari- 

 ations noticed with reference to Potassium oxide, Phosphoric acid 

 and Calcium oxide (lime). 



The amount of Potassium oxide varied according to the following 

 percentages : 



The majority of dealers in unleached wood ash guarantee from 

 4.5 to 6 per cent of potassium oxide. The higher grades of wood 

 ashes are frequently obtained from home sources. It is well to see to 

 it that the quantity of both potassium oxide and phosphoric acid 

 are separately mentioned with reference to their percentage, as our 

 laws require. 



