INFLAMMABLE GAS. 257 



Having exhausted my whole stock of gas from peat, I pre- Experiments 



pared an additional quantity, which, after being freed from car- ^"^ observa- 

 , . ., ^ r tionsonthem- 



fconic acid, was composed ot flammable gas 



77 inflammable gas from peat. 



23 common air 



100 

 Its specific gravity was 0.8516, which gives us, for the specific 

 gravity of the pure inflammable part, 0.8072. This gas, of 

 course, is a little lighter than that used in the preceding expe- 

 riments. But the difierence does not amount to 4- per cent, 

 one hundred cubic inches of it, at 60*, weigh 25.02 grains. 

 The following table exhibits a view of the experiments made 

 with this gas and the pure oxygen. 





Measures 

 of Gas. 



Measures 

 of Oxy- 

 gen. 



Residue 

 after 

 Combus- 

 tion. 



Ditto, 

 washed 

 in Lime- 

 water. 



Nitrous 

 gas added 

 to Resi- 

 due. 



Bulk of 

 Residue. 



X 



20 



20 



2+ 



20 



36 



27.5 



2 



20 



30 



37 



30 



41 



18 



3 



20 



20 



40 



^Q.5 



3S 



54 



22 



4 



50 



55 



47 



74 



23 



5 



20 



60 



65 



58 



104 



32 



To understand these experiments, we must, as in theformef 

 case, separate the pure gas and oxygen from the azote, and 

 state the nature of the residual gas, as ascertained by the ana- 

 lysis. This is done in the following table. 





Measures 

 of Pure 

 Gas. 



Measures 

 of Oxygen 



Measures 

 of Azote. 



Residual 

 Gas. 



Carbonic 

 Acid. 



Residual Gas. 





Oxygen 



Azote. 



Gas. 



J 



15.4 



90 



4.58 



24 



4 



10.5 



4.58 



3.92 



2 



14.4 



29.57 



5.03 



37 



7 



19.5 



25.8 



5.03 

 5.48 



5.47 



3 



15.4 



39.12 



5.48 



46.5 



8.5 



6.72 



4 



15.4 



47.67 



5.93 



55 



8 



36.1 



5.93 



4.97 



5 



.5.4 



58.22 



6.38 



65 



7 



47 9 



6.38 



3.72 



Vol. XVI.— April, 1807, 



It 



