Outlines of a V'le'UJ of Galvamfm, 3,55 



To compofe a. galvanic batterv, feries oF the conduAors 

 Capable of forming fimplc circles arc required. j\nd they 

 muft be arrantrcd in luch a manner, that the conductors of 

 the fame clals in every icries may be in contact: with each 

 other, in one or more points, at the fame time that they are 

 rcfpcotively connected will) different conductors of the other 

 clafs, and one of them belonging to the fame feries, a re- 

 gular alternation being obferved. 



Thus, the order of a-conipound calvanic circle is. condu6lor 

 of the one clafs, conductor of the one clafs, conductor of the 

 other clafs; conductor of the one clafs, and fo on, in uni- 

 form arraiiLremciit. 



§ 2. The compound galvanic circles, like the fimplc cu"- 

 cles, may be divided into two general orders. 



The ^w'^x. order is compofcd of feries, containing, at leaft, 

 two perflot conductors, and one imperfect conductor. The 

 fccond is formed by arrangements, confilting of not lefs than 

 two imperfect conductors, and one pcrfe«Sl conductor*. 



Tluis, if plates of zinc, and of lilver, and pieces of cloth, 

 of the fize of the jilates, moiflcned in \yater or diluted mu- 

 riatic acid, be arranged in the order of zinc, filver, clolh ; 

 zinc, filver, cloth: and fo on, till twenty feries are perfectly 

 connected, a galvanic battery is formed of the firft clafs f. 



And if plates of copper, and pieces of cloth, mdiftened, 

 fome in water and fome in folutlon of fulphuret of potafli, 

 be connected in a circle, in the order of copper, cloth 

 Tuoiltened in water, cloth nioifiened in folulion of iulphuret 

 ot" puiaih, and fo on, a compound circle will be formed of 

 the fecund clafs %. 



The moft elegant mode, however, of arranging the metals 

 of compound circles with fluids, is by means of vellels com- 

 pofcd of elec};rical nonconductors, fuch as glalles, or boxes 

 formed of baked wood. 



Thu?, plates of copper and of zinc, paired, and foldered 

 together at their edges, may be cemented into a trough com- 

 pofcd of baked wood, in regular alternation, and in fuch a 

 manner as to leave a number of water-tight cells corre- 

 fponding to the number of feries. And this arrangement 

 will become adlivc when the cells arc filled with water or 

 faline I'olutions, and when the extreme metals arc properly 

 connected §. 



Or, infteail of th<j dcvible plates, finL'lc plates of copper 

 and of horn, or glafs, maybe ufed in uniforni alternation ; 

 when the cells nmit be filled with, difierent fluid chemical 

 asfcnts iu the retridar older, fo as to be contieftcd tosiethcr 



• D. + Volia. ; D. § Mr.Cruikfkink. 



6 by 



