L>* TIAVT. 



nied ty Voita, the athor of the pik, and indeed of the 

 science which, like the continent of America, has borne 



of a liqmoi copahk of decomposing one or other of the 

 both supposed to be equally necessary to the 



of the electric stream. 



which were numerous and admirably devised 

 laboriously conducted, now showed that the 

 of two metals was not required to pr 

 the electricity. One metal,, and one other substance 

 paiated firom M^ with a fluid acting upon either the 

 metal or the substance; or a metal separating two fluids, 



1 C7 



oar of which acts upon k ; nay, one metal exposed to 

 the sMne ftud, but acted upon differently on its diffe- 

 ioot sides or Jiifatm by the fluid's strength differing 

 on the diflmnt sides ; or one and the same metal 

 in difigt pieces plunged into the same fluid, at 

 an interval of time were all found to be combina- 

 tion which gave the galvanic (or voltaic) shock, the 

 one in kind, though varying in _ih. In all 



these cases, and m every production of electricity 

 W the roltaic process, the chemical action of a fluid 



oonco- 



Durin: tike fiwe following years Davy continued his 

 i; and in the autumn of 1806 he coinniu- 

 to the Boyal Society his discovery of the con- 

 ends of the electric circle 



