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1900.] MARINE REVIEW. 29 Worthy of your Investigation. Cold drawn Seamless Steel Boiler T ubes are specified by the U. S. Government and the British Admiralty for use in all boilers in their respec- tive Navies. Shelby Boiler Tubes are being used in Marine Boilers throughout the entire world and are giving the very best satisfaction. Shelby Boiler Tubes are manufactured from the best quality of open hearth steel, from the original round billet. They are worked cold after the heating operations and are very dense, tough and ductile. Shelby Boiler Tubes do not leak. They do not crack or fail at the ends. Write for new Catalogue for full information. THE SHELBY STEEL TUBE CO. GENERAL SALES OFFICE AMERICAN TRUST BLDG,CLEVELAND,O. NEW YORK. JULIAN LYALE & CO. ROOKERY BLDG. CHICAGO, CHICAGO 135 tanest. JJ.LYNN Branch orrees| PORT.HURON MICH. BUAARELL € FOWLER crevd. iii ee