< Collier's New Encyclopedia (1921)

ACETYLENE LAMP, a lamp designed for utilizing acetylene as an illuminant. Acetylene lamps have come into general use among cyclists. In some of the lamps, cartridges filled with calcium carbide are used, and the dropping of the water into the cartridge is regulated by an adjustable valve. The acetylene flame is very brilliant.

Source: Collier's New Encyclopedia 1. (1921) New York: P.F. Collier & Son Company. 19.

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