DCHP-1 Online
swamp fire 
marsh gas, methane, which at times burns in swampy areas; will-o'-the-wisp.
- 1903 Like swamp-fire, it lured the imagination always on and on and on through the secret waterways of the uninhabited north.
- 1954 Behind them the swamp fire, like a gigantic Jack o'lantern, bumped and danced and ran around the sky, then finally, as it reached the ground, evaporated into the night air.
- 1903 Like swamp-fire, it lured the imagination always on and on and on through the secret waterways of the uninhabited north.