198 Mr. Henry's Account of Experiments 



from the experiments related in the first Section, it appears 

 highly probable, that a complete purification from moisture is 

 produced, in both gases, by the action of the electric fluid ; all 

 the water they before contained being thus decomposed. In the 

 following experiments, therefore, the two gases were separately 

 electrified, before they were submitted to this process conjointly. 

 Exper. 15. To a portion of muriatic acid, diminished by the 

 action of electricity from 144 to 121 measures^ 27 measures of 

 carbonated hydrogenous gas, expanded as far as possible, were 

 added, and 200 shocks passed through the mixture. The addi- 

 tion of permanent gas amounted to 14 measures ; 10 of which 

 may be traced to the muriatic acid, and were evolved by its 

 separate electrization. The remaining 4 measures, which remain 

 to be accounted for, are too small a quantity to be ascribed to 

 the decomposition of the acid. 



Exper. 16. To a quantity of carbonated hydrogenous gas, 

 which had received 400 shocks, and occupied the space of 212 

 measures, I added 232 of muriatic acid, through which 200 

 shocks had previously been passed. The electrization of the 

 mixture was next continued, till 800 discharges had taken place. 

 On examining the mixture of gases, during this operation, no 

 change whatever took place ; and, after its close, no more 

 muriatic acid had disappeared, than would have been deficient 

 after the first electrization ; nor was there any further produc- 

 tion of permanent gas. 



Exper. 17. The same result was obtained, by electrifying 

 together 280 measures of carbonated hydrogenous gas, pre- 

 viously expanded by 600 shocks, and 1 14 of muriatic acid, after 

 400 shocks. The additional discharge, through this mixture, 



