TEACT No. 1. 



ON 



ELECTRO-CHEMISTRY, 



WITH 



POSITIVE KESULTS; 



AND 



NOTES ON THE TWO ELECTRICITIES.* 



1 . ARE the two electricities material elements ? 



The late Dr. Turner, in his Elements of Chemis- 

 try, states that the "effects of electricity are so 

 similar to those of a mechanical agent it appears 

 so distinctly to emanate from substances which 

 contain it in excess, and rends asunder all obstacles in 

 its course so exactly like a body in rapid motion, that 

 the impression of its existence as a distinct material 

 substance, sui generis, forces itself irresistibly on the 

 mind. All nations, accordingly, have spontaneously 

 concurred in regarding electricity as a material prin- 

 ciple ; and scientific men give a preference to the 

 same view." 



* The substance of this tract is embodied in a pamphlet which 

 I published at the close of 1849, entitled, " Thoughts on Elec- 

 tricity." 



