SECT. XXXI. EXPERIMENT OF FARADAY. 321 



extend to common light ; and, as it belongs to light made in a 

 certain respect more precise in its character and properties by 

 polarization, it collates and connects it with these powers in that 

 duality of character which they possess, and yields an opening, 

 which before was wanting to us, for the appliances of these to the 

 investigation of the nature of this and other radiant agencies." 

 Thus Dr. Faraday's experiment not only shows the increasing 

 connexion between the sciences, but the tendency of all the 

 forces of nature to merge in one great and universal power. 



In the action of a magnet upon the stratifications of an elec- 

 trical discharge Mr. Gassiot has discovered a new instance of the 

 connexion between magnetism and light. 



P 3 



