SIS Dr Turner’s Experiments on the Application of 
Given Volumes of a mixture composed of hydrogen and oxy- 
gen, in the exact proportion to form water, and quite dry, were 
mixed with various quantities of other gases, and submitted to 
the action of electricity. A strong charge from a Leyden jar 
did not cause detonation, when one volume of the explosive mix° 
ture was diluted with 
12 
vol. 
of 
Atmospheric Air. 
14 
- 
- 
- 
Oxygen. 
9 
- 
- 
- 
Hydrogen. 
9 
- 
- 
Nitrous Oxide. 
4 
- 
~ 
Carbonic Oxide. 
3 
- 
- 
Carbonic Acid. 
1 
- 
- - 
Olefiant Gas. 
4 
- 
- 
Coal Gas. 
4 
- 
- 
Sulphuretted Hydrogen. 
i 
- 
- 
Ammoniacal Gas. 
$ 
- 
- 
Muriatic Acid Gas. 
2 
- 
- 
Sulphurous Acid Gas. 
Detonation, 
on the contrary, was not prevented by 
10 vol. 
of 
- 
Atmospheric Air 
12 
- 
- 
Oxygen, 
7 
- 
- 
Hydrogen. 
7 
- - 
Nitrous Oxide, 
3 
- 
- 
Carbonic Oxide. 
2 
- 
- 
Carbonic Acid. 
4 
- 
- 
Olefiant Gas. 
i 
- 
- 
Coal Gas. 
k 
- 
- 
Sulphuretted Hydrogen, 
4 
- 
- 
Ammoniacal Gas. 
3 
- 
- 
Muriatic Acid Gas. 
1 
» 
- 
-> 
Sulphurous Acid Gas. 
By reference 
to 
page 
77. of 
Sir H. Davy's work on the 
safety-lamp, it will 
be seen, that several of my results 
differ 
slightly from his. The chief difference relates to the action of 
Nitrous Oxide, which he finds to have a considerably less influ- 
ence than oxygen in preventing detonation ; while my observa- 
tion leads to an opposite conclusion. The nitrous oxide I em- 
ployed was collected over mercury, was well dried, and was not 
used for some hours after its formation. 
3 
