1:^8 



MURIATIC ACiD. 



purify had been proved by nitrate of filver; (be whole Was 

 faflejud by wax on a fmall piece of glafs, placed in the 

 niidft of an horizontal galvanic pile of fifty-two double fquare 

 p'ates of 4.25 inches at each fide. Thefe plates were fepa- 

 raicd by pieces of leather, which formed between each 

 other divifions, which were filled with very pure fand, moift- 

 The fin;", of the ened by a folution of muriate of fuda. The capillary tube was 



pile mojftened ^^^^ beneath the water of a ciftern, with its extremity 



with folution ot ' ' J 



muriate of foda: under the moiith of a jar filled with water. The two wires 

 ga? immedi.uely of ijo]{| being made to communicate with the two poles of the 



dUcngaged on " . .". . . . -r 



its completion, pil^> its a6livity was immediately exhibited by the difengag^- 



ment of gas in chains of bubbles very apparent, parting from 



the extremiiy of each of the gold wires, but in a more con- 



fiderable quantity from that correfponding with the copper 



pole. This adiivity of difengagement ©f gas continued 



without interruption from the eighth of Thermidor, to the 23d 



of the fame month, on which day, after ihe pile being moiften- 



ed with folulion of muriate of foda, it flopped for lome time : 



it foon however recommenced, and always didfo after any fuf- 



penfion. Its a6livity was immediately renewed by agitating 



the wires which communicated with the poles of the pile. 



the a£llvlty of 

 the difengage- 

 ment of gas re 



newed by agitat- The adiivify of the pile was conftantly greateft at four o'clock, 

 in the afternoon; and immediately afterwards it began l() 

 diminifli On the 1 1th of Frucfidor the apparatus was taken 

 afunder, after continuing for thirty-four lucceflive days in 

 continual aciion. The water was then diminiflied to half its 

 original voUime, but had not lolf any of its limpidity. 



The extremities of the gold wires, from whence the gas 

 had procteded, were oxided, but that mofl perceptibly 

 which communicated with the zinc pole of the pile. The 

 whole gas obtained and collected during the experiment, was 

 793 cubic centimetres { 1 200 inches). The liquor remaining in 

 the tube was carefully examined ; it produced no fenfation of 

 cubic^entime- ^^^^ "" ^^^^ tongue, had no adlion whalfoever on the tinfture 

 ters of gss col- of turnfol and of fernambuc, and did not produce the lead 



lefted. cloudinefs in the folution of nitrate of filver. 



The remaining 



liquor in the The gas produced by the aflion of the pile was then ex- 



tube has no amined. After having introduced one meafure of it info the 

 tafte, nas no . _ ° , . ,. . 



adiononturn- eudiometer of Fonlana, an equal meafure ot nitrous gas, 



ioic, and is not made purpofely for the proof, was added : an abforption of 



affefled by folu- r r ^ l » f r 



lio« of nitrate of ICVCBty- 



fjlvtr. 



ing the wires 

 This aftivity 

 always greateft 

 at four in the 

 aft«rnoon. 

 The apparatus 

 fcparated after 

 continuing in 

 action thirty- 

 four days- 

 The water in 

 the tubs di- 

 jiiiniftied one 

 half, the gcid 

 wires oxided, 

 that next the 



