Fire-damp, marsh-gas, or carburetted hydrogen, is colorless, almost scentless; it burns with a blue flame, and makes respiration impossible.
"The Underground City" by Jules Verne
Dr, Henry analyzed the composition and investigated the properties of carburetted hydrogen gas.
"The Mirror of Literature, Amusement, and Instruction, No. 290" by Various
During the progress of the boring there is more or less carburetted hydrogen gas set free.
"Continental Monthly, Vol. 5, Issue 2, February, 1864" by Various
Of this nature is carbureted hydrogen gas, which is produced in various ways.
"Popular Education" by Ira Mayhew