INFLAMMABLE GAS. 253 



Tkese experiments are of two kinds, each of which ought to Experiments 

 be considered separately. In the first five the oxygen "^^^ ^"^j^^Jf^'lJ'g -n. 

 applied in small doses, and the gas underwent two sui:cessive flammable gas 

 combustions. In the last eight, the proportion of oxygen was from peat. 

 greater, and one combustion only took place. 



By inspecting the first five experiments.it will appear that the 

 inflammable ga? "was never entirely burned, but the residue di- 

 minished continually as the propo- tion of <, -ygen increased, and 

 in the last of the list of them, did not exceed l-22d part of 

 the whole. If we examine the residual gas after the first com- 

 bustion, scarcely any oxygen will be found in it: indeed, I 

 could detect none at all, except when the proportion of oxygen 

 approached thit which limited the combu tion to a single de- 

 tonation. By subtracting the residual gas and the residual 

 oxygen, after the second combustion, from the oriorinal quan- 

 tities present, and by supposing the whole oxygen to disappear 

 in the first combustion, we obtain the following table of the 

 relative quantities of gas and oxygen consumed, and of" carbo- 

 nic acid formed, in these different experiments. 





FIRST COMBUSTION. 



SECOND COMBUSTION. 







Gas con- 

 sumed. 



Oxygen 

 consum- 

 ed. 



Carbonic 

 acid Gas 

 formed. 



Gascon- 

 sumed. 



Oxygen 

 consum- 

 ed 



Carbonic 

 acid Gas 

 formed. 





2 



2.29 



7.71 



3 



12.14 



5.86 



6 





3 



7.97 



10.03 



5 



10.45 



5.05 



5.5 





4 



5.65 



12.35 



5.5 



7.82 



7.18 



9 





5 



9.33 



14.67 



' 



14.71 



7.29 



10 





6 



14.61 



16.99J 9.5 



10.67 



5.93 



8 







7.9i 



I2.35i 6 



1 



11.16 6.26 



7.7 



Average. 





100 



155.351 75.48 



100 '5.^.19 



69 



Average percent. 



From this table, it appears that the proportion of oxygen 

 which disappeared by the first detonation, was much greater, 

 compared with the inflammable gas consumed, than in the 

 second combustion. The average of the first conibustions gives 



155 



