182 GALVANIC POWER. 



on the furface *. As this eledrated hidrogen (if I may l)« 



allowed the expreflion) does not move through the liquid with 



the facility of the ele£lricity itfelf, the neceffity of a furface of 



copper equal to that of the zinc is obvious. It is plain that 



only a proportionate quantity will be carried through the whole 



Olgeftion to the feries. This fad I have afcertained in attempting to render 



Jcnb?d^nour the apparatus propofedby Mr. Wilkinfon ?ind yourfelf ufeful 



Vol. VIII. p. 3. for all experiments. The (liock is even lefs when the furfiace 



of Voita'!"'°"''*' ^^ ^^PP^^ '^ '^^' ^^^^"^ ^^"^""^ '"^^^• 



How the e'cc- The quantity of ele6trated hidrogen in each cell increafes 



tricitv increafes f^^^ ^j^^ copper end to that of the zinc in an arithmetical pro., 



the hidrogen in , . . . . 



.the eyct^rior gremon. The eledricity only exifts in its fimple form while 



f5^» it is paffing from the copper furface through the two metals tq 



the zinc furface. It there combines with another portion of 



hidrogen, which it le^aves at the next copper furface,, and fo 



on accumulating in quantity the longer the feries it has to pafs 



through. In the decompoiition of water by the galvanic 



trough, the veffels in which this is performed may be confidered 



as one cell in the feries. The eleflricity feizing the hidrogen 



at the pofitive wire and giving it out at the negative. 



XI. 



Memoir on the Origin of Wax •\'. By Francois Huber, 

 AJ ember of the Society of Natural Philofophy q,nd Natural 

 Hijiory of Geneva. 



IT has been thought flrange that the word wax fhould feldom 

 occur in a book which treats of bees alone : but neverthelefs as 

 in the courie of my obfervations, I had not attended to the 

 products of their induftry, I could only have repeated what 

 had been faid by Swammardam and Jleauraur, and that did 

 not feem to me to be neceflary. 

 Mechanical I knew that thefe infe6ls colleded abundantly upon the an- 



operations of therx of flowers, that they are acquainted with the method of 



the bees, . ■ • [ 



•This faft is very obvious when the copper furface is very clean. 

 The hidrogen under contrary circumftances is employed to reduce 

 the oxide. 



f From Journal dePhyfiquc, &c. Pluviofe, An. XII. 



opening 



