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THE MARINE REVIEW MARC Reg. U.S. Pat. Off. Condenser Valves Why experiment with unknown and untried brands of Marine Rubber Goods when you are able to secure the Meruco line which has been giving excep-~ tional service for years in Marine Service ? We have developed a line of Piston, Valve Stem, Pump and Sheet Packings, Pump Valves, Steam and Deck Hose especially compounded and built for severe Marine duty,and proven to be superior in quality by years of satisfactory service. THE MECHANICAL RUBBER CO., CLEVELAND, OHIO Our Branches in the Principal Lake Ports UNITED STATES RUBBER CO. 379 Washington St., BUFFALO, NEW YORK THE OHIO RUBBER CO. 725 St. Clair Ave. N. W., CLEVELAND, O. THE OHIO RUBBER CO. 282 Jefferson Ave. East, DETROIT, MICH. UNITED STATES RUBBER CO. 218 W. Madison St., CHICAGO, ILL. . UNITED STATES RUBBER CO. 41 Oneida St., - MILWAUKEE, WIS. trices — rae —the standard CoP “a weatherproofing for canvas Makes canvas not only absolutely watertight, but strengthens and preserves the fabric. Used univer- sally on the Great Lakes, and extensively on the eastern seaboard and southern waterways. Any ship chandler can supply Preservo. If you want — special information, rein ox write to us at nearest address. Robeson Preservo Products Company Port Huron, Mich. EASTERN BRANCH: 342 Western Ave., Boston, Mass. CANADIAN BRANCH: Sarnia, Ont. —_ The Hunter-Johnson Co., 311 California St., San Francisco, Distributors for Pacific Coast. “Captain Dake, You're Right, The Records Prove It” Captain Dake said his boat was making 4 knots. Captain Blaw said she was making 12. The court agreed with Blaw until Cap- tain Dake produced the speed record from a Nicholson Recording Ship Log. Then another “circumstantial evidence’ case fell before ‘‘positive proof’. At all times the dial shows the exact speed of the vessel; also permanently records it with the time and date on the record chart. This instrument pays for itself many times over in preventing damage suits for alleged excessive speeds in dangerous passages. Many lines require their Masters to turn these records over to the manager, who can see at a glance the whole performance of the ship while underway, and he files them for future reference. There isn’t a ship in the water that shouldn’t be equipped with this Nichol- Y son Recording Ship Log. Let us tell you more about it. Write for booklet and _ catalog, Nicholson Ship Log Co. Cleveland, O. Please mention THe Marine Review when writing to Advertisers June, 1917