PROCEEDINGS OF THE CHEMICAL DEPARTMENT. 



181 



From these results the weight per acre of each of the 

 tuentti is calculated in the following table : — 



consti- 



100-00 



100-00 



100-00 



The total quantities of the different constituents removed, by 

 the crop, from an acre of land, in lbs., is : — 



Water . 



Albuminous compounds 



Other organic matters 



Peroxide of Iron 



Lime . 



Magnesia 



Chloride of Sodium 



Soda . 



Potash 



Sulphuric Acid 



Phosphoric Acid 



Sibcic Acid 



Total . 



