348 



BOARD OF AGRICULTURE. 



Magnesia-Potash Sulphate, 



(Collected of Wm. n. Earle, Worcester, Mass.) 



Per cent. 



Moisture, 4.00 



Potassium sulphate, 51.30 



Potassium oxide, ■ . 27 77 



Magnesium oxide, 12.30 



Magnesium sulphate, 36.90 



Sulphuric acid, 47.90 



Insoluble matter, 1.18 



The consumption of this saline is apparently increasing ; 

 for tobacco and deep-rooting plants, it deserves a fair trial. 



Caiiada Ashes. 



(Messrs. Horton & Phelps, Northampton.) 



I. 



Per cent. 



Moisture 23.24 



Organic and volalile matter, 32.95 



Ash constituents, 67.05 



Phosphoric acid, 1.01 



Calcium oxide 32,27 



Potassium oxide, 3 55 



Insoluble matter, 8.26 



II. 



These two samples (I. and II.) are fair spocimens of the 

 Canada ash sold in western Massachusetts; the price in car- 

 loads of GOO to 675 bushels, is reported to be 34 cents per 

 bushel. 



III. 



(Sent from Whately, Mass.) 



Per cent. 



Moisture, 28.04 



Organic and volatile matter, 39.62 



Ash constituents, 60.38 



Phosphoric acid, . . . 0.68 



