168 Dr. E. Frankland on a New Series of 



III. 



Difference Correctedvol. 



Observed of mercury at 0° C . and 1 



volume. Temp. level. Barom. metre press. 



Volume of gas u3ed-lj22.Q j^.yc. 5630 764-2 20-95 



(moist) . . J 

 Volume after admis-l 24 ^.^ ^^.^ ^^^.^ 200-33 



sion of O (moist) J 

 Volume after explo-lggg.g g^.^ g^^.Q ygg.g jgg.^g 



sion (moist) . J 



'^tbrofc(?(d7)j2^^''' ^^'^ ^^^"^ ''^^■^' ^^^'"^ 



Volumeafteradmis-lggg.j^ 2^.^ ^.q ^g^.g ^yg.gg 



Sion of H (dry) J 

 Volume after explo-lg^g.^ ^-j^.g ^^3.3 ^^^.^ 153.Q9 



sion (moist) . J 



Hence 20*95 vols, containing 20*62 vols, combustible gas, 

 consumed 70*78 vols, oxygen, and generated 41*37 vols, car- 

 bonic acid : now as 20*62 vols, of this gas must contain, accord- 

 ing to analyses Nos. I. and II., 17*10 vols, hydride of sethyle, 

 which would consume 59*85 vols, oxygen and generate 34*20 

 vols, carbonic acid, it is evident that the volumes of oxygen con- 

 sumed, and carbonic acid generated, by the gas absorbed by 

 fuming sulphuric acid, must bear the following relation to each 

 other : — 



The body removed by fuming sulphuric acid is therefore ole- 

 fiant gas, 1 vol. of which consumes 3 vols, oxygen, and generates 

 2 vols carbonic acid, numbers which correspond sufficiently with 

 those obtained in the above determination. 



The last analysis can also be employed to control Nos. I. and 

 II. j for if we represent the volume of nitrogen, contained in the 

 original gas, by x, that of hydride of sethyle by y, and that of 

 defiant gas by z ; and further, the volume of mixed gases, oxygen 

 consumed, and carbonic acid generated, respectively by A, B 

 and C, we have the following equations : — 



|y + 35r=:B 

 2y + 22'=C, 



