albo-carbon
/ˌalbə(ʊ)ˈkɑːbn/Now historical and rare
noun
Naphthalene as used in gas lamps, in which its vapour was mixed with the gas in order to produce a brighter flame. Chiefly attributive in albo-carbon lamp, albo-carbon light.
Origin
Late 19th century; earliest use found in Dundee Courier & Argus. From classical Latin albus white + -o- + carbon, with allusion to the white colour of the solid form of naphthalene, which is a hydrocarbon.