»S4 Eudiometric Obfervations^ 



produ£ls, would thus be cafily determined. I eledrlfied, therefore, the muriatic add and 

 carbonated hydrogen gafes, with the moft fcrupulous attention to the phenomena and 

 refults. That the eledlric fluid might not be mifapplied, in decompofing the water of the 

 carbonated hydrogen gas, it was kept more than a week, before ufe, over quick lime, 

 introduced to it while yet hot. 



Exper. :o. Of this carbonated hydrogenous gas, i86 meafures were expanded, by 130 

 (hocks, to 21 1 j that is the gas was increafed about -J- its bulk. 



Exper. 11. Of the fame gas, 84 meafures were mixed with 116 of muriatic acid gas, 

 dried by muriate of lime. By 120 (hocks, the mixture was a little dilated. After the ad- 

 miflion of a drop or two of water, there remained 91 meafures; i.e. the addition of 

 permanent gas was 7 meafures, or about as much as might have been cxpc£tcd from the 

 jmuriatic gas alone. 



Exper. 12. Eighty-three meafures of dry carbonated hydrogenous gas, with 89. of 

 muriatic acid gas, received 200 (hocks. The permanent refidue, after the admilEon of 

 water, was loi meafures: the addition, therefore, amounted to 18. Of the added i8^ 

 i> may be accounted for by the decompoGtion of the water of the muriatic gas, and 10 by 

 that of the carbonated hydrogenous gas. There remain, therefore, only 2 meafures that 

 can be fuppofed to be produced from the muriatic acid gas ; a quantity too fmall to afford 

 f rounds for fuppofing them to arife from decompofed acid. 



Ex^er, 13. Dry carbonated hydrogenous gas 132 meafures, 

 mixed with dry muriatic gas 108 



240 

 by 200 (hocks, expanded to 268 

 Part of this gas was then transferred to another tube, and the proportion of permanent 

 gas afcertained. Through the remainder, 150 additional (hocks were palTed, before the 

 amount of the gas thus evolved was determined. In both, it bore exadlly the fame pro- 

 portion to the original gas ; which (hews, that by continuing the eledlrization, no further 

 tfFedls were produced. 



(To be continued.) 



V. 



Eudiomttric Ohfervaiions. By Citizen Bmrthollet*. 



A. 



. S the air we breath is known to be compofed of oxigen and azote gas, the propor- 

 tions of thefe two gafes, and the changes that may take place in the atmofphere, have been 

 condant objefts of enquiry. But the beft method of acquiring that knowledge, or ther 

 refult on which the greateft reliance xazy be placed, is not yet determined. 



• Fxtrailed from the Memoirs on Egypt, and inferted in the Annalw de Chimie, torn. XXXIV. p. 73, 



The 



