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M A R I N E You Can Generate MoreP ower in less time--in less space--with less fuel and less waste energy: have a steadier water level and a more even capacity, with a DEARING WATER TUBE BOILER than with any other kind. For the"WHY'" drop us a line. Dearing Water Tube Boiler Company Michigan Detroit, \ * Boston development of the article. DIAMOND STEAM FLUE BLOWER TO USERS OF LIFE PRESERVERS We desire to call attention to our new Acme Cork Life Preservers which we unhesitatingly recommend as the most effi- cient, durable and economical preservers manufactured. The blocks are made of compressed cork and con- tain no admixture of any foreign substance whatever. The canvas, straps, thread and workmanship are of the highest possible standard and are in strict accord- ance with the government regulations. The tests of the Armstrong Acme Preserver before the Board of Supervisors in Washington were the most severe ever made and demonstrated their great superiority beyond dispute. After submersion in water for ten days their buoy- ancy was over 30 ~ greater than that required by law. We will be pleased to quote prices and terms upon application. Armstrong Gork Gompany New York Pittsburgh Philadelphia Baltimore Chicago St. Louis - You can identify the Diamond Flue Blower by this trade mark. It represents advanced ideas and the highest Placed on every This Blower is commended by the leading engineers and most prominent steam users. Its work is quick and thorough--without loss of steam, or slacking of machinery. Just turn the handle--it operates at will. You would profit by having it. Sent on trial without obligation to buy. POWER SPECIALTY Co. Main Office: 500 Washington St., DETROIT, MICH. 6) J