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-~Acetylene— the universal gas Cy. .. one hears of a gas other than acetylene that can be used with oxygen for cutting steel. The promoters of such gases readily admit that acetylene is the best for all other uses with oxygen. That’s why acetylene can be called the univer- sal gas for all oxy-acetylene welding and cutting. It can be used equally well for welding thick or thin plates of metal. It is the most satisfactory for cutting steel or cast iron, and also for brazing, welding and soldering. In fact, the very term—oxy-acetylene process —itself is a good indication of the fact that acety- lene is the “universal” gas. The Prest-O-Lite Company has 31 plants in operation and 101 distributing points for See ing users of this universal gas. THE PrEsT-O-LITE COMPANY, INC. Unit of Union Carbide and Carbon Corporation UCC General Offices: Carbide and Carbon Building 30 East 42d St., New York 31 Plants—101 Warehouses STEEL WELDING Vol. 57, No. 11, November, 1927, issue of MarINE Review, published monthly at Cleveland, Ohio. Entered as second class matter at the post office, Cleveland, Oh‘o, under the act of March 3, 1879. Subscription price $3.00 a year in U. S.; Canada, $4.00; Great Britain, £1; single copies, 35c.