The Royal Engineers Journal
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The Royal Engineers Journal. Royal Military College of Canada . MajorGeneral G. Waker 369 The Raising and Lengthening of Cardington Airship Shed. A. R. Gibbs, Esq. 374 Picture-Telegraphy and Electrical Vision . Colonel F. A. lies 385 The Case for the Horizontal Multi.Cylinder Internal Combustion Engine Captain R. M. H. Lewis 403 The Defence of Aoulai . ieut. H. B. Harrion 411 The Army "Security" Problem of the next Great War Brevet-Major B. C. Dening 417 Notes by a Chief Engineer during the Great War of 1914.1918 Brigadier-General W. Baker Brown 422 Battle Honour* of Royal Engineer Units 437 Hydro-Electric Development in France . Captain . FitzJ. Fitzmaurice 458 More about Ourselves . "Praefectus Fabrum" 469 Raising Water from Deep Wells . Major R. Chalmers Black 473 The Relation between Decking and Roadbearers in Military Bridges Captain H. A. Baker 475 Mercury Arc Rectifiers . .Lieutenant K. H. Tuson 486 The Boys' Technical School . A Parent 495 Dissection of Heptagon . 500 Memoirs. Books. Magazine. Corresponden . 501 VOL. XL. No. 3. SEPTEMBER, 1926. CHATHAM: THE INSTITUTION OF ROYAL ENGINEERS. TELEPHONE: CHATHAM, 669. AGENTS: W. & J. MACKAY & Co., LTD., FAIR Row, CHATHAM. HUGH REES, LTD., 5, REGENT STREET, LONDON, S.W.I. PRINTED BY F. J. PARSONS, LTD., OBSERVER BUILDINGS, HASTINGS. A ll Corresandfncn£nected. withA dveriisemeits should beaddresdltaTinEADnvExisESMNT INSTITUTION OF RE OFFICE COPY ,Vnn MnT1'J I.'ll/ DLMnlr ¥_l'l,i i __ _E; _____ THE ONLY ACCUMULATOR IN THE WORLD WITH PLATE-GRIDS MADE OF PURE LEAD with the Plate Grids Die Cast and Pasted entirely by machinery. Without Wood Separators or Celluloid, eliminating internal resistance and heat which shortens the life of other makes of plates, and creating constant trouble. TUNGSTONE Pure Lead Grid ROBUST Machine-made Platea permit charge and Discharge at Continuous High Rates with Safety. No posibilities of the Plates Buckling or short-circuiting ia service. No Fire or Explosion Riaka when Charging above Normal Rates. A Tungstone Battery ia not fully charged unlesa the Acid shows fully 1300 Sp.G. Tungatone Robust Machine Made Plates are in best condition when always kept fully charged. VERY IMPORTANT ADVICE TO MOTORISTS. Arrange for Car Dynamo output to be permanently increased so that at a car speed of 20 miles per hour the continuous charging rate is as follows. viz.: 40 a.h. Battery minimum charging rate is 8 amps. 50 a.h .. .. 10 amps. 75 a.h. ... .. .. 15 amps. Tungatone Machine Made and Pasted Plates are Heavier and Stronger than any other make of Plate, and therefore can be continuously charged at these higher rates than any other make of battery. Tungstone Plate Grids being made of Pure Lead. and the Paste of Pure Lead Oxides. ensures exceptional storage capacity and quick discharges. therefore provision is made to give continuous, ample and generous power for Self-starting without cranking. Follow these instructions and you permanently get the full benefits of the originality of Tungstone Design and Manufacture of a Pure Lead Plate and Grid giving exceptional Strength. Storage. Dependability. Reliability. Security. and Safety. CHARGING HIGH TENSION AT 12-16 VOLTS POTENTIAL. All H.T. Tungstone Accumulators are fitted with a Patent Equipment whereby each series of 12 Volts can be coupled in parallel so that these H.T. Batteries of whatever voltage can be charged at local Garages and Charging Stations on a 12-16 Volt Low Tension Charging Plant. Charging Terminals are provided on the front of the Cabinet arranged in two rows, the top row being Positive and the bottom row Negative. When in use these charging terminals are connected in pairs so that all cells are in series. 3^ Apply for copy, sent post free, Illustrated Booklet- "Photography tells the Story of the Tangstone Accumulator." Please address all communications to the Distributors' Offices and Showrooms: TUNGSTONE ACCUMULATOR CO., LTD., 3, ST. BRIDE'S HOUSE, SALISBURY SQ., FLEET ST., LONDON, E.C.4 Telegrams: "Typify, Fleet, London." Telephene: Centrs 8157 (4 lines). SOLD BY ALL DEALERS. T.24 Series of Patent Designs and Trade Mark Issued or Applied for In the Chief Countries of the World. AD VETISEMENTS. Before deciding Ask BAKER to Quote! FOLLOW ? ' '''-.- HEDOTTED LN \ NEW HEAD OFFICES For the greater convenience of their clients, F. P. BAKER & Co., Ltd., are opening on or about the ist of October, their new Head Offices at la, GOLDEN SQUARE, W.I. These premises are in the heart of the West End and can be reached on foot from three Stations within the space of five minutes. The Map above shows accurately the position of Ia, GOLDEN SQUARE, and its proximity to Charing Cross Station, Piccadilly Circus, and Oxford Circus Tube Stations. At their Office, 15, Panton Street, Haymarket, to which you are accustomed, the Gun and Sporting Rifle Department will be carried on as before under the guidance of a well-known expert. The Sample Room will also be at GOLDEN SQUARE, instead of Whitcomb Street as at present. F. P. BAKER & CO., Ltd., beg to assure their clients in the ROYAL ENGINEERS that these larger showrooms will permit them to offer a Service even more complete than hitherto, and that all enquiries will receive the promptest attention. We are "true dispatch is a rich thing .... All support grateful Bacon. is much for appreciated. enquiries IVe can also for True Dispatch Collect Goods, Mess Plate, For your purpose, this phrase-True Dispatch Mess Kit, -mav be interpreted to signify an Organ- Pack, R.I. Kit, isation built up especially to meet the needs Store, Games Kit, of a Service Clientele. or Personal Kit, Over 60 YEARS' EXPERIENCE has Ship Travelling Kit, enabled F. P. BAKER & CO., Ltd., to Furnishings, perfect this organisation, so that you are Promptly, afforded a very substantial saving on al and by the Cars, your purchases. Sporting Guns Cheapest and In addition, you can rely on us to submit suggestions and information as desired- Method. Rifles. promptly and efficiently. '.................................. ..................'....... i We have, as clients, many of the ROYAL ENGINEERS, and appreciate the privilege. F. P. BAKER & CO., Ltd., la, GOLDEN SQUARE, W.1. AD VERTISEMENTS. I- EXISTS TO Serve the Services. 111111111111111111111111 11111 It is the Services' Own Business. ;;„!l11;;1;;111 ;IIIII>1011;11 PROMOTE YOUR OWN AND YOUR SERVICE'S INTERESTS By obtaining everything you require from your Regimental Institute. Our Price Lists & Cataloguesinclude: PROVISIONS TOILET REQUISITES GROCERIES SPORTS OUTFITTING CONFECTIONERY AND PRIZES WINES AND SPIRITS BOOIS & STATIONERY TOBACCO PRINTING CIGARS & CIGARETTES CUTLERY AND PLATE FANCY GOODS HARDWARE ETC., ETC. 11111i111111111111151 11111 The more you deal with your own business, the more rebate will be paid to your regimental funds, and the more your comfort and convenience will be increased. Address enquiries to Headquarters;: Imperial Court, Upper Kennington Lane, S.E.11 _I.1 -I· THE INSTITUTION OF ROYAL ENGINEERS. All communications for the Institution should be addressed to:- The Secretary, The Institution of Royal Engineers, Chatham. CONTENTS. PAGE I. ROYAL MIILITARY COLLEGE OF CANADA. By Major-General G. Walker, C.B., C.B.E., D.S.O., late Royal Engineers .. .. .. .. 369 2. THE RAISING AND LENGTHENING OF CARDINGTON AIRSHIP SHED AND OTHER WORKS. (With Photos and Plates.) By A. R. Gibbs, Esq., A.M.INST.C.E., A.M.INST.M.E. ... .. .. .. .. 374 3. PICTURE-TELEGRAPHY AND ELECTRICAL VISION. By Col. F. A. lies, C.B.E., D.S.O., R. of 0 . ..... .. .. .. .. 385 4. THE CASE FOR THE HORIZONTAL MULTI-CYLINDER INTERNAL COMBUSTION ENGINE. (With Photos and Plates.) By Captain R. M. H. Lewis, M.C., R.E. .. .. .. .. .. 403 5. THE DEFENCE OF AOULAI. By Lieut. H. B. Harrison, R.E. .. .. 411 6. THE ARMY "SECURITY" PROBLEM OF TIHE NEXT GREAT WAR. By Brev. Major B. C. Dening, M.C., R.E., p.s.c. .. .. .. 417 7. NOTES BY A CHIEF ENGINEER DURING THE GREAT WAR OF I914-I918 (continued). By Brigadier-General W. Baker Brown, C.B... 422 8. BATTLE HONOURS OF ROYAL ENGINEER UNITS (continued) .. 437 9. HYDRO-ELECTRIC DEVELOPMENT IN FRANCE. (With Photos and Plates.) By Captain D. FitzJ. Fitzmaurice, R.E. .. .. .... 458 10. MORE ABOUT OURSELVES. By "Praefectus Fabrum" . .. .. 469 II. RAISING WATER FROM DEEP WELLS. By Major R. Chalmers Black, R.E. (T.A.) .. .. .... .. .... 473 12. THE RELATION BETWEEN DECKING AND ROADBEARERS IN MILITARY BRIDGES. (With Plates.) By Capt. H. A. Baker, M.C., R.E. .. 475 13. MERCURY ARC RECTIFIERS. (With Plates.) By Lieut. K. H. Tuson, R.E. 486 14. THE BOYS' TECHNICAL SCHOOL. By A Parent . ........ 495 15. DISSECTION OF HEPTAGON .. .. ......... 500 16. MEMOIRS.. .. .... .. .. .. .. .. 501 Major Sir Robert Hanbury Brown, K.C.M.G. (With Photo.) By R. B. Buckley, Esq., C.s.I. Colonel Charles Frederick Cobbe Beresford. (With Photo.) By Major-General Sir Francis Bond, K.B.E., C.B., C.M.G. Colonel Clement Archer Righy Browne. I7. BOOKS .. .. .. .. .. .. .. .. 510 The Study of War. (Major-General Sir Ernest Swinton, K.B.E., C.B., D.S.O.) H.B-W. The Perils of Amateur Strategy. (Lieutenant-General Sir Gerald Ellison, K.C.B., K.C.M.G.) H.B-W. A Short History of the British Army to I9I4. (Capt. E. W. Sheppard, R.T.C.) R.P.P-W. CONTENTS. PAGE BooKs-(continued)- Talks on Leadership. ("Basilisk," R.P.P.-W.) The Work of the Survey of India in the Great War. C.F.C. Engineering Surveys. (W. Norman Thomas, M.A., D.PHIL., MI.SC., B.SC.) C.F.C. Railroad Construction. (Walter Goring Webb.) W.G.T. The Book of the Light Car. (E. T. Brown.) G.C.G. I8. MAGAZINES . .... .. 527 Revue Militaire Francaise. HA.J.P. Revue du Genie Militaire. H.G.K.W.