J 32 Dr Bischof 's Examination of Three Inflammable Gases 



hydrogen, carburetted hydrogen, and defiant gas. They 

 take for granted, however, that double the portion of the gas 

 employed amounts to more than the volume of the absorption. 

 We obtain the following combination : — 



Hydrogen, 0.0930 vol. 



Carburetted Hydrogen, 0.7741 ... 



OlefiantGas, 0.1329 ... 



1. 0000 



This combination, however, cannot exist, as it supposes a 

 much larger quantity of defiant gas than is afforded by direct 

 experiment with chlorine gas (J 3). 



According to the results of the analysis in the detonation- 

 tube, the first combination alone can be supposed possible. In 

 regard to the defiant gas, whose quantity, as ascertained by 

 indirect analysis, was found to be somewhat greater than when 

 determined in the direct way, I would refer to what I shall 

 have to say in § 11. 



It still remains to inquire whether the pit-gas under con- 

 sideration could consist of the four inflammable gases. The 

 following general consideration proves, that, from the results of 

 the analysis of such a gaseous mixture in the detonation-tube, 

 the individual gases can be quantitatively determined, when 

 its specific gravity is known. 



*Let 



vi be the volume of the hydrogen, ....(«) 



x ... ... ... carbonic oxide gas . . • (/0 



y .. ... ... carburetted hydrogen gas, . (y) 



z ... ... ... defiant gas, . . . . (S) 



Let a denote the absorption by detonation ; b the carbonic 

 acid produced by detonation ; c the specific gravity of the 

 gaseous mixture ; a, /3, y, b, the specific gravities of the gases 

 standing opposite them ; and in the quantity of the inflam- 

 mable gases burnt ; n the detonation-tube ; and we obtain the 

 four following equations : 



w + x + y + z-=-m 



3 1 



-iv + —x + 2y + 2z=a 

 2 2 J 



x + y + 2z = b 



K ii' + [ix + yy + i z — e m 



