Gas Mantle : A small dome-shaped structure of knitted or woven ramie or rayon, impregnated with a solution of the nitrates of cerium and thorium, then dried, and the textile fabric burned off. (Chambers)
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}