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July, 1917 Lighting. Controlled by Chicago EVERLASTING BLOW OFF VALVE (Marine Type) Made to last for years—No repairs necessary. Used on purifiers, ash gun and water columns as well as in blow-off service. Will replace any leaky valve in two years with a new one or refund money. Self-cleaning and self-grinding. Simple construction—Easily operated. Will pass Government inspection 250 lb. pressure. Write for booklet and free trial offer SCULLY STEEL & IRON COMPANY 2364 S. Ashland Ave. CHICAGO, ILL. LAKE ERIE BOILER WORKS BUFFALO, N.Y. BOILERS, TANKS and PLATE WORK OF ALL KINDS THE MULHOLLAND HATCH-FASTENER COMPANY Main 272 Marion Building, Cleveland, Ohio Cent. 1016 Manufacturers of the Mulholland Simplex and Security Hatch Fasteners. For Ocean and Lake Trade. OVER 225,000 SETS NOW IN USE ON THE GREAT LAKES SAFETY CAR HEATING & LIGHTING CO. 2 RECTOR STREET, NEW YORK Philadelphia St. Louis San Francisco, Cal. Boston Montreal DRE: MARINE. REVIEW PINTSCH GAS LIGHTED BUOYS Adopted by the English, German, French, Russian, Italian and United States Lighthouse Departments for Channel and Harbor Over 2,200 Buoys and Gas Beacons in service. Burn Continuously from Eighty to Three Hundred and Sixty- five Days and Can be Seen a Distance of Six Miles Absolute Safety _ Highest _ Efficiency Least Bulk nd Weight _ This equipment answers all possible " requirements. KROESCHELL CARBONIC ANHYDRIDE REFRIGERAT- ING EQUIPMENT is in use on the following Lake Vessels: North American; South American; Northland; Seeandbee; City of Cleve- land; Detroit III; Tionesta; Juniata; Octorara; Harvester; Noronic; Rochester; Hamonic; Toronto; Arthur Orr; Minnesota; J. H.C. Hagarty; Geronia; Alabama; Nevada and others. May we send you our literature ? KROESCHELL BROS i MACHINE CO. G New York City CHIC Detroit, Mich. Cook’s Metallic Packing especially adapted for marine service, highest efficiency guaranteed; extensively used by many prominent Steamship Lines and Ship Builders. For full particulars, address, C. Lee Cook Mfg. Co., Inc. Louisville, Ky., U. S. A. Please mention THE Marine Review when writing to Advertisers