Herewith is a sketch (one-eighth full size) of a portable and automatic acetylene gas generator for use with a magic lantern. The apparatus works well, and will give about 400 candle-power for about two and a half hours. In the illustration the carbide is shown on top of the lime residue. A is the pipe leading to the lantern, the lamp for which has four burners.

Acetylene Gas Generator for Magic Lantern.