MURIATIC ACir>. I3P 



fevenly-feven two hundredth parts took place in the volume The gas pro- 



c . r duced IS tried by 



©t the two meatures. Foncanas's eu- 



In order to afcertain whether all the oxigen which the gas drometer, aa 



contained had entered into combination in (his abforption, a ^eventy°fbven 



fecond meafiire of nitrous gas wa» introduced into the two-hundiedtha 



eudiometer; but ihe gas did not experience an) diminution ^*'^" ^ ^*^'^* 



of its volume. The quantity of oxigen which the abforption 



produced by ihe introdu6tion of the firtt meafure of nitrous 



gas might indicate, was attempted to be valued by a com- 



parifon with atmofpheric air elTayed in the fame manner ; for 



which purpofe one meafure of atmofpheric air was introduced, 



and an equal quantity of nitrous gas added ; an abforption of 



fifty-five two hundredth parts took place in the volume of 



the two meafures. In contidering thi> abforption as the effeft 



of the combination of nitrous gas with the volume of oxigen 



gas, correfponding to the 0,22 parts, which atmofpheric air 



contains, it may be concluded, that the abforption of feventy- 



feven two hundredth parts, produced with the gas of the 



pile, reprefented proportionally the combination of the fame 



quantity of nitrous g»s with a little lefs than 0,31 parts of The quantity of 



the oxigen. It was then obferved that the meafures of gas ejfnthggas' 



having been introduced feparately and fucceffively info the valued at 0,3s 



eudiometer, it might happen that they were not fufficientl)^^"^* 



well mixed, and that confequently the abforption was not as 



compleal as it might be. It was thought that it might be belter 



to pafs the gafes in feparale meafures under a jar, and then 



to introduce the whole volume together in'o the eudiometer. 



The former experiments having been repealed in this manner, 



an abforption took place between the gas of the pile and the 



nitrous gas, of ninety-two two hundredth parts in the volume 



of the two gafes, in place of fevenly-feven refulting from 



the fame proof, by the firil method ; and with the atmofpheric 



air and the nitrous gas the abforption was (ixly-eight two 



hundredth parts inftead of fifty-five. There refults (hen from 



this, according to the liime ratio of the 0,22 parts of oxigen 



contained in the atmofpheric air, a proportional indication of 



about 0,30 parts of this gas contained in that of the pile. The proportion 



It was again proved with the eudiometer of Volla, by in- **|^ '^^ ^'^'S'^'" ^ 

 , . - , - . , ^ after more exatr 



troducmg a fingle meafure mto it, through which the eledric tria!s is more 



fpark was made to pafs ; the proof was afterwards repeated accurately va- 

 * ' * c (T \ luedato,3oof 



lucceilively. the gas. 



