258 INFLAMMABLE GAS. 



Experiments It is remarkable, that the whole of the gas was never con- 



and observa- sumed in any of these experiments, though there was preservt 

 tionsonthe in- . , , .- r , 



flammable gas "^ every case a much greater proportion of oxygen than was 



from peat. necessary. Neither did the proportion of residue vary nearly 

 as much as in the former case. The following table gives the 

 proportion of gas and oxygen consumed in each experi- 

 ment. 





Gas consumed 



Oxygen con- 

 sumed. 



Carbonic acid 

 formed. 



Diminution of 

 bulk, Carbo- 

 nic Acid in- 

 cluded. 



1 



11.48 



9.50 



4 



20 



2 



9.93 



10.07 



7 



20 



3 



8.68 



13.32 



8.5 



22 



4 



10.43 



11,57 



8. 



23 



5 



11. 6S 



10.32 



7 



22 





10.44 



10.96 



6.9 



21.4 





100 



104.98 



66.1 



204.98 



The oxygen consumed in these experiments v/as greafier than 

 in the preceding. The proportion of carbonic acid is appa- 

 rently less, because the experiments were made over water, 

 and the bulk was more diminished by the combustion than in 

 the former case. When tkey were repeated over mercury, I 

 obtained an average of 8.5 measures of carbonic acid gas from 

 the preceding proportions of inflammable gas and oxygen, 

 which gives us 81.4 measures of carbonic acid gas for 100 of 

 the gas from peat consumed. 



The mean of these experiments ahd the former gives us 

 nearly 102 measures of oxygen consumed, and 81 measures of 

 carbonic acid formed, for every 100 measures of pure inflam- 

 mable gas burnt; and these proportions I consider as approach- 

 ing as near precision as we can expect to go, according to the 

 present myde of experimenting, 



U. Having 



