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December, 1909 "TAE. MARINE REVIEW 535 Clean Boiler Flues Save Fuel (as Soot is the Heat Killer Soot in Boiler Tubes is useless and expensive. Expel it by the only sure and most approved method. your coal bill--increase your steam power and give your: boilers their full capacity by installing the DIAMOND STEAM FLUE Reduce BLOWER. It requires no forced conception to measure its superiority. It is IDEAL for the purpose--an unequalled success. » The Diamond Steam Flue Blower is a permanent fixture attached to the rear of the boiler to blow the soot with the natural draft--cleaning all the tubes their entire length. without loss of steam or slacking the machinery. Just turn the handle--the blower operates at will and pays for itself in a few months. We have numerous testi- monials from every state in the Union and Canada, by the leading engineers and most prominent steam users, in which economy and satisfaction is the keynote of each. Write for Booklet. Diamond Power Specialty Company -- 220 Fort West Windsor, Canada DETROIT, MICH. LIDGERWOOD SHIPS' WINCHES and STEERING ENGINES IMPROVED DESIGNS A 'SUPERFINE"' WINCH Flat, polished all-metal frictions. No wood or iron used. These winches meet the exacting speci- fications of the U. S.. War (Quartermaster's) Department, , and ofthe U.S. Navy Department MORE THAN 32,000 ENGINES BUILT AND IN USE LIDGERWOOD MFG. CO., 95 Liberty Street, NEW YORK Branch Houses: Chicago, Boston, Pittsburg, Phitadelphia, Cleveland, Atlanta, Seattle, London, England A NEW BOOK The Lake Pilots' Hand-Book Compiled By Capt. George Trimble. This book contains useful knowledge to the Great Lakes, and Great Lakes Piloting, that should be useful to the pro- fessional as well as the. beginner. The need of a handy book of reference and of general information on the subject of the Great Lakes led the author to undertake the prepar- ation of this work. The book is cloth bound, size 51-2 x8 inches and contains some 230 pages. The price is $1.25, carriage prepaid. BOOK DEPARTMENT The Penton Publishing Co., Cleveland, O. Berlin, Germany JANOS Fibre Sheet Packing Long-Lasting Will be guaranteed against whatever sheet Packing you are using at present. Half thickness, Twice Life «Janos is lighter--as far as we have been able to determine--per sq. foot, than any sheet on the market in this or any other country. You save the difference To the engineer, Janos proves the nearest approach to the perfect, permanent sheet, that is possible to secure. Fool proof and lasting. Steam, gas, gasolene, water, etc. Supplied in sheets 46" square and 47' x 10' in all thicknesses from 1-64" to 3-16" fC JUDD 410 Rockefeller Building, Cleveland, Ohio Write for samples and prices.