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30 MARINE REVIEW. [June 138, Dearborn Vegetable Boiler Compounds. SCIENTIFICALLY AND UNIFORMLY MADE. EVER RELIABLE. Most Scientifically equipped, Complete, Handsome and expensively Furnished Laboratories, and the ONLY EXCLUSIVE LABORATORIES ON STEAM ECONOMY in the Country. MARINE FORMULA NO. 5, For the WATERS of the FIVE LAKES, To prevent pittiig, neutralize the oil, stop incrustation, and as a perfect preservative to the iron, boiler, and all its connections--especially prepared for the marine trade of the lakes. If you are using a different water, prepay the express on a gallon jug of your feed water to the DEARBORN LABORATORIES at CHICAGO and receive a copy of analysis of same, with a written diagnosis of your case, and a letter giving you all the valuable information we can, and the actual cost of what it will require to clean your boilers and keep them clean. All of this will be done free of charge, and optional with you whether you order or not. When in Chicago call and inspect pur Laboratories. Analyzers of Everything. Makers of Boiler Compounds. OFFICES: 29, 30, 31, 32 and 33 Rialto Building. Telephone, Harrison, 1373. DEARBORN DruaG & CHEMICAL WoRKS CHICAGO WM. H. EDGAR, President. Manufacturing and Analytical emists. WORKS: 23, 25, 27 and 29 La Salle Street. Telephone No. 1130 South. CRAIG SHIP BUILDING CO. TOLEDO, OHIO, METAL 2 WOODEN SHIP BUILDERS. New Dry Dock--450 feet tong, i10 feet wide on top, 55 feet wide on bottom, (6 feet of Water on Sill. Repairs to Metal and Wooden Ships A SPECIALTY. Marine Boilers. Gentrifugal Pumping Machinery for all Purposes. Kingsford Foundry and Machine Works, OSWECO, N. Y. 400 CHESTNUT ST., PHILADELPHIA, h. D, WOOD & 60,, CENTRIFUGAL PUMPS DIRECT-CONNECTED TO STEAM ENGINE 0? ELECTRIC MOTOR. UNEQUALLED FOR MARINE SERVICE. ---- Circulating Water for Condensers, Bilge Water Drainage, Dry Dock Service, Dredging, Wrecking, &c. Gas. P. Willard & C0. F. C. WALTER, Manager. 45-49 §, Canal St., CHICAGO. Marine Engines and Boilers, Paddle Wheel Engines, Boat Machinery, High Pressure, Compound and Triple Expansion Engies, Yachts and Launches, WRITE FOR CATALOGUE. WE ARE THE INVENTORS OF THE P=3 CAULKING MALLETS NOW USED IN ALL 1HE SHIP YARDS OF THE WORLD. Specialties: Boiler Makers' Mauls, Stone Cutters' Mallets, Hawsing Beetles, and all kinds of Mallets. Illustrated Catalogue and Price List upon application. N.Y. MALLET & HANDLE WORKS, Established 1845 454 E. Houston Street, NEW YORK, U.S. A. BARGAINS IN BOOKS. AS LEADERS IN OUR BOOK TRADE WE WILL ALLOW FOR A SHORT PERIOD A DISCOUNT OF 25 PER CENT ON THE FOLLOWING BOOKS. LISTED ON PAGE 35 OF THIS ISSUE OF THE REVIEW: A Library of Steam Engineering--Fehrenbatch. Gas and Oil Engines--Richmond. Slide Valves--MacCord, Jr. A Handbook of Engineering Practice--Smart. Modern Examinations of Steam Engineers--Wakeman. Theoretical and Practical Ammonia Refrigeration--Redwood. Elementary Naval Tactics--Bainbridge-Hoff. THE MARINE REVIEW PUB. CO., CLEVELAND, O.