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16 on any ship is dependable equipment. In Johns-Manville products the Marine and Naval Engineer is assured of dependable and economical service. Each product must prove itself correct in design, manufacture and functioning be- fore it is sent forth with the backing of Johns-Manville responsibility. Johns-Manville Marine Products Sea Ring Packing Kearsarge Gaskets Steam Traps Refractory Cements Service Sheet Packing Tachometers Pipe and Boiler Insulation. Ebony and Transite Asbestos Wood. Audiffren-Singrum Refrigerating Machines. JOHNS-MANVILLE Incorporated Michigan Ave. and 18th St. Chicago, III. Marine Offices: Buffalo Cleveland Detroit Chicago Duluth Milwaukee Toronto Winnipeg