37^ Galvanifm. 



*' The confcioufnefs of contributing in their fphere to the 

 public good, and to the improvement of a favourite branch 

 of natural faience, is the fole remuneration which the Mem- 

 bers of the Society look forward to ; and they will efteem 

 the time and expenfe employed in the analyfis of minerals 

 amply repaid, if thofe whom they have thus ferved will exert 

 their perfonal aftivity and influence among their workmen, 

 in furthering the execution of the above defign, by the com- 

 munication of illuftrative fpecimens and explanatory lifts of 

 technical terms. 



" It is the intention of the Society to aflbciate as corre- 

 fponding Members a fele6l number of fuch perfons, com- 

 petently fkilled in mineralogy, as may be zealous to afTift its 

 views ; and that proprietors of mines, who have it much in 

 their power to furnifti fuch fafts and fpecimens as are of 

 principal importance to the Society, fliall be confidered as 

 eligible to the clafs of correfpondiug Members ; all of whom, 

 though they are to be fubje6l to no pecuniary contribution, 

 (hall be allowed free accefs to the meetings and to the 

 cabinet." 



GALVANISM. 



Mr. Carlifle has lately made fome intcrefting experiments 

 which prove the identity of the ele6tric and galvanic fluid. 

 A number of plates of filver (fay, 40 or 50 crowns or half- 

 crowns) piled alternately with plates of zinc, with pieces of 

 wetted pafteboard between each to complete the galvanic 

 chain, will not only give an eleftric fliock to the perfon who 

 touches the top and bottom of the feries, but continue to 

 give an uninterrupted (tream of the electric fluid, which 

 being pafled through water, decompofes it completely. If 

 gold, filver, or platina wire be employed to carry the elc6lric 

 matter into and from the water, both oxygen and hydrogen 

 are liberated j but if oxydable metals are employed, hydrogen 

 onlv. 



INDEX 



