SO'h HISTORY OF GALVANISM. 



the production of hidrogen and the oxidation of the zinc end 

 when he ufed a communication of copper ; and when he em- 

 ployed a wire which was not oxidablc, he obtained both hidro- 

 den and oxigen according to the obfervation of Mr. Nicholfon. 

 Redu&ion of He permitted the influence to pafs through a folation of a me- 

 thcir ablution. tumc ^y an ^ found after ibme time, that the metal began to 



be revived at the filver end of the apparatus. 



Mr. W. Henry Mr. William Henry, of Manchester, fubmitted concentrated 



phuric and nitric folphuric acid to the influence of galvanifm : he made ufe of a 



acids, but not wire of platina. Not only the water which always enters 



t e muriatic. mtQ ^ Q com p fi*i on f this acid, but alfo part of the acid itfelf, 



appeared to be decompofed, as the oxigen which he procured 



was in a larger proportion to the hidrogen obtained than is fuf- 



ficient to compofe water. Nitric acid was alfo decompofed, 



Oximuriaticwasand the water of muriatic acid. When oximuriatic acid was 



oxigena e . f UD j e ft ec } to its influence, the water was decompofed, and the 



Gafes could not ac ^ was deoxigenated. Gaffes do not appear to be conduc- 



be fubjccled to r , . . n ° r . ■ __ TT rr ,, 



\ tm tors ot this influence, to that Mr. Henry was not able to try its 



Ammonia was effects in decompofing muriatic acid gas. It alfo appears to 

 ecompo e . j iave ^ e power of decompofing ammonia. 



(To be continued.) 





* On account of the great Quantity of original Communi- 

 cations, the Scientific Nexus and Account of Books is neceffa- 

 fily deferred* 



X. Y. Z. is informed that the derivation of chrome or chromiwn 

 is from xpw/ua, color ; and was adopted by Vauquelin, becaufe its 

 co?npounds vjiih oxigen are coloured. See Pldlof. Journal, quarto, 

 11. 444. 



