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400 (Continued from page 392) termine the viscosity and automatically control the steam valve of the oil heaters to keep the temperature at the point to give the right viscosity regardless of the quantity and quality of oil used. Photographs of other types of equipment will also be shown. The booth of this company will be in charge of Edwin B. Sadtler, who directs the marine sales of the Peabody Engineering Corp., assist- ed by Messrs. Leask, Dyer, Warner, Wroom and Hayes. PNEUMERCATOR CO., INC., Sperry build- ing, Brooklyn, N. ¥.—This company will occupy booth No. 7. A number of different models of pneumercator tank gauges will be shown. There will also, of course, be numerous photographs’ of installations and catalogs for general information. The representatives in charge for the company will be C. J. Wicks, secretary; and Wm: Thomas, chief engineer. POWER SPECIALTY CO., 111 Broadway, New York—This company will occupy booth No. 22 and will have on exhibition a line of Foster equipment such as the marine economizers, convection-type superheaters, the radiant heat-type superheaters, and the waste heat-type superheaters. This equipment is suitable for ocean, river and lake work. There will also be exhibited Foster fittings for boilers and other pressure vessels, Those in attendance will be Jos. J. Nelis, H. W. Parsons and C. A.. Ruuth. PREFERRED UTILITIES: CO., 383 West Sixtieth street, New York—This company is acting as Eastern distributor for the W. S. Ray Mfg. Co., San Francisco, who manufactures the Ray rotary fuel oil burner. There will be exhibited in booth No. 91 a Ray steam turbine drive rotary fuel oil burner for power boilers; a Ray electric motor drive rotary fuel oil burner—one large size for power boil- ers and one small size for heating boilers aboard oil engine driven vessels; also Ray oil burning galley ranges, This equipment is not entirely strange to the marine field as it has been installed in some vessels on the west coast. in fuel by means of the Ray burner. The following representatives will be in attendance during the: marine show: S. D. Rickard, G. W. Bohn, J. S. Spalding and Arthur Roberts. PROPELLER CLUB, New York—The Pro- peller Club will occupy booth No. 43 and the activities of the club will be directly in charge of a show committee of six, under the chair- manship of Ernest M. Roberts, - assisted by T, J. Smith, Wm. C. Gray, Wm. Hayes, N. R. Sibley and H. M. Wick. There will also be a sub-committee of thirty so that a number of representatives will always be on _ hand. All of these men will wear badges identifying them as being on the Propeller club’s show committee. There will be a registration desk in the Propeller booth where all mem- bers are expected to sign up as they visit the show, and they will then be given the Propeller club’s special button for the show. One of the famous noonday luncheons will be held during marine week on November 10 at 12:30 p. m., probably at the Engineers club, and it is expected that the Hon. Herbert Hoover will be the leading speaker. RADIO CORP., 233 Broadway, New York— Booth No. 77 will be occupied by this com- pany. A model E. T. 3636 tube transmitter, a model E. T. 8627 tube transmitter, a type I. P. 501 marine radio receiver and a R. C. A. radio direction finder will be exhibited at the show. Full details and particulars will be given concerning their operation. T. M. Stev- ens, general superintendent of the marine department and P. C. Ringgold, assistant general superintendent, will represent the com- pany at the exposition. SELBY, BATTERSBY & CO., 810-12 Noble * street, hand hole. There is a claim of. saving MARINE REVIEW Philadelphia—This company will ex- hibit in booth No. 9. The display will con- sist of sections of a typical smoking room, stateroom, and passageway, on ship _ board, covered with Selbalith deck covering. This special deck covering will be shown as an ordinary deck sheathing over which cork- composition or rubber tile may be laid and it will also be shown as a complete deck covering in various designs and colors. Selbalith is furnished in eight or more colors so that the display will be attractive and will demonstrate that this material can be furnished to har- monize with any color scheme. Geo. W. Selby and Edw. Battersby, officers of the company, will be in charge of the booth and will be in attendance during the marine show. SHARPLES SPECIALTY CO., Twenty-third & Westmoreland streets, Philadelphia—In booth No. 46 this company will exhibit a_ totally inclosed ‘or pressurtite super centrifuge, which was designed primarily for the purification of diesel engine fuel oils, particularly of the lower gravities, that need to be heated above the flash point in order to secure efficient separation. The totally enclosed type of ma- chine enables the diesel operator to handle his fuels without the danger of escape of vapors into the engine room, and _ without the necessity for breaking any pipe connec- tions to clean the machine. A cross section of a lubricating oil purifier will be shown. This equipment gives a very clear picture of all the working parts of the Sharples super centrifuge. The exhibit will be in charge of H. H. LaMent, vice president—sales. SPERRY GYROSCOPE CO., Manhattan Bridge Plaza, Brooklyn, N. Y.—wWill occupy booth No. 75. This .company will exhibit a complete merchant marine type gyro-compass equipment and .a specially constructed gyro- scopic apparatus which will show the earth’s rotation, the first time such an apparatus has: been placed on public exhibition; a com- plete gyro-pilot automatic steering equipment of the type now used on a very large number of merchant vessels throughout the world; and a gyro-pilot of the type being used largely on new vessels and diesel equipped vessels where the control unit is mounted in the wheel house and the power unit is mounted in the steering engine’ room and attached directly to the controls of the steering equip- ment, whether steam or hydro-electric. There will also be exhibited a new development in incandescent searchlights and high intensity arc searchlights; a visible air whistle; helm angle indicator equipment, and an engine speed indicator system. Some of this equipment which will be shown is that which is being specially constructed for the new Matson liner the steamship MALOLO. The following will represent the company during the exposition: T. A. Morgan, R. B. Lea, R. E. Gillmor, C. D. Jobson, O. B. Whitaker, J. R. Conover and J. A. Fitz. B. F. STURTEVANT CO., Hyde Park, Bos- ton—This company will occupy booth No. 72. The exhibit will consist of turbines for driv- ing fans and pumps, motor driven ventilation fans, small vertical engines, and possibly a forced draft blower of a certain type, and a gear transmission such as are now coming into use quite widely for fans driven by means of turbines. E. B. Williams and Mr. Jewett will represent the B. F. Sturtevant Co. at the marine exposition. THORKOTE PRODUCTS CO., INC., 81 Coffey street, Brooklyn, N. Y.—The exhibit of this company will be held in booth No. 10 and will be in charge of N. Smith. A variety of grades of the products of the company will be exhibited; also the results of tests and experiments will be demonstrated. Differ- ent samples will be on display. The products of the company are used. particularly for November, 1925 protection against corrosion; for instance, exposed portions of tail shafts, also for stern frames, bilges, inner bottoms, east iron propel- lers, fore peak tanks and other parts and equipment of ships. P. S. THORSEN & CO., INC., 81 Coffey street, Brooklyn, N. Y.—Will occupy booth No. 10. This company will exhibit a variety of insulation material and its application to ma- rine installations. The exhibit will be in charge of M. E. Bullard, vice president and general manager, who will be assisted by R. S. Warner, W. L. Davies, V. Menig and T. Drydale. TODD SHIPYARDS CORP., 25 Broadway, New York—Will exhibit in booth No. 2 at the marine exposition. There will be on display in the Todd booth the new rotary fuel oil burner for low pressure installa- tions. This burner is exhibited for the first time and has been especially designed for low pressure jobs. The Todd natural draft air register for marine and _ power plants; the Todd marine lamp; and the Todd A. R. welder of the portable type will all be exhibited. Russell Bowes, in charge of oil burning apparatus; J. K. Wheten, oil burn- ing lamps; and J. G. Broderick, in charge of the welder exhibit will represent the Todd. company. UNITED STATES LINES—Will exhibit in booth No. 69. A model of the LEVIATHAN and interesting features of the travel service offered by this company will be shown. The space is, of course, reserved in the name of the United States Shipping Board Fleet Corp., and displays showing the work of the shipping board and _ the Emergency Fleet in general will probably also be shown. The exhibit will be attended by representatives of the U. S. Lines. GEORGE WALKER, SHIP INSTRU- MENTS, 255 Atlantic avenue, Boston—There will be demonstrated in booth No. 24 a new type of propeller log invented by Mr. Walker. A similar instrument has been thoroughly tried out at the Brooklyn navy yard. This instru- ment is applicable to twin, triple and quad- ruple screw vessels and will give the revo- lutions of each shaft and the average revolu- tions, and will give the speed in knots corre- sponding to the average revolutions of the shafts. This is an interesting and ingenious instrument. Geo. Walker, the inventor, will be in attendance and will be assisted by H. A. Chase, superintendent of the Cummings Ma- chine Works, Boston. WAR DEPARTMENT, Washington — The exhibit of the war department will be in one of the several booths reserved by the United States government. These booths are Nos. 25, 26, 27 and 28. The activities of the War de- partment will be represented by the marine activities of the United States Engineers. Their marine activities are much more wide spread than the average person would think. They not only operate boats but build various types of crafts with many interesting engi- neering features. They build boats for the Mississippi and Ohio rivers and also large ocean going dredges for use in the harbors on the Atlantic and Pacific coasts. This ex- hibit will consist of a number of models of dredges; also plans and _ specifications and photographs of all types of dredges and other vessels operated by the Engineers department. The special machinery employed in various types of floating plants will also be shown by plans and photographs. The exhibit will be in charge of engineer officers stationed in the New York district. WESTINGHOUSE ELECTRIC & MFG. CO., East Pittsburgh, Pa.—Booth No. 45 will be the home of this company during the marine exposition. The main feature of the exhibit (Continued on page 408) have an