MARSH GAS
\mˈɑːʃ ɡˈas], \mˈɑːʃ ɡˈas], \m_ˈɑː_ʃ ɡ_ˈa_s]\
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Methyl hydride, methane, fire-damp, CH4; a colorless, odorless gas, forming an explosive mixture with oxygen.
By Stedman, Thomas Lathrop
By Nuttall, P.Austin.
By Stormonth, James, Phelp, P. H.