ANALYSIS OF THE GALVANIC PILE. 1 %$ 



Tlxese experiments, different from those of the former set, 

 having clearly decided the above question concerning the 

 condition of the shock, the whole together ascertains the fol- 

 lowing facts. 



1. When there is no calcination produced on the metals of General con- 

 the pile, though the electric fluid be put in motion, no cAe- c us;ons - 

 ?nical effect is produced in the water of the tubes. 



2. When that calcination is produced by pure water, 

 though these chemical effects take place, there is no shock? 

 the latter requiring the calcination to be produced by an 

 acid. 



3. When the electric fluid, in pervading the pile, is ren r 

 dered capable of producing either one, or both of these ef- 

 fects, its course \§ retarded through the water of the glass 

 tubes, and more in the latter case.. 



The last of these facts leads to the following conclusion. 

 When the electric fluid pervades a pile wherein the calcina- 

 tion of some metal is going on, the fluid itself undergoes 

 some modification, which is the cause of the concomitance 

 of these phenomena, a retardation of its course through the 

 water, and the production, with a very small quantity, of 

 effects which it cannot produce but with an incomparably 

 greater quantity, when set in motion by any other known 

 means. But before I come to this object, it is necessary to Presence of a 

 ascertain an essential point, which so far I have only men- fluid not no r 

 tioned, namely, that the motion of the electric fluid in the 

 pile does not depend on a separation of the binary groups of 

 metals by a liquid, or a wet body, but requires only that 

 the separation be produced by the best nonmetallic conduct- 

 ing substance ; and with the leading experiments concerning 

 this object I shall conclude ih\s first Part of the analysis. 



Exp. 19. I mounted the pile of 76 groups of zinc and E, p . 19. 

 silver; but instead of wet cloth to separate them, I used new ' 



cloth, which had stood some time iu my room, my hygrome- 

 ter being at about 40°. 



1. Electric signs were produced at the extremities of the. 

 pile, but weaker than when the pieces of cloth were wet. 



2. The glass tubes being applied, these signs ceased, but 

 there was no appearance of chemical effects in the water of 

 the tubes. 



Judging 



