290 THE COLLIERY GUARDIAN February 7, 1913. COHTEHTS. PAGE Editorial Article :— Safety Lamp Glasses......................................... 291 Articles :— The Determination of Water in Coal............ 277 The Use of Gases for Fire Extinction .......... 279 Opening of the New Methil Dock............... 280 The World’s Coal Production and Consumption ... 281 Coastwise Shipments in December ............. 283 Mine Managers’ Examinations ................. 285 Obituary.................................'.................................. 285 Coaldust Explosions and Stonedust ............ 285 Labour and Wages ........................... 292 Colliery Accidents ........................... 293 Further Developments near Doncaster.......... 293 Notes from South Wales...................... 295 The East Kent Coalfield ...................... 295 Mining and Other Notes ...................... 296 The Freight Market .......................... 297 Open Contracts ............................. 298 Abstracts of Patent Specifications Recently Accepted 302 New Patents Connected with the Coal and Iron Trades.................................... 301 Government Publications .................................... 304 Publications Received ........................ 304 Progress Cost of the Freezing Process—A Steam-gas Turbine 282 Continental Mining Notes ..................... 283 .................... Parliamentary Intelligence ................... 297 Coal, Iron and Engineering Companies .......... 298........ Monthly List of Recent Coal Literature ..... 299 The Coal and Iron Trades ................. 286—289 ................. The London Coal Trade ...................... 294 The Tin-plate Trade .......................... 294 The By-Products Trade _____.................... 294 Letters to the Editor • Surveyors and Managers’ Certificates — Mining Surveyors and the Surveyors’ Institute—Rescue ______________ Apparatus of the Injector and Non-Injector Type —Use of Stonedust in Collieries — Oxygen Poisoning ................................. 284 Miscellanea .-— Hull Coal Exports—The Lothians Mineworkers’ Ambulance League.......................... 279 Electricity in Mines .......................... 283 Explosives in Coal Mines Order ................ 285 Mining Institute of Scotland................... 288 Manchester Coal Exchange..................... 297 Manchester Geological and Mining Society— Partnerships Dissolved....................... 298 Grim-by Coal Exports—Institution of Mechanical Engineers ................................. 304 __________________________________________________ SUBSCRIPTIONS. 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VTTAT THQ KOK minerals, water and brine Boreholes for Prospecting in Underground Workings a Speciality. VIVIAN’S BORING COMPANY, PARKSIDE, CLEATOR MOOR. OVER 82 MILES OF BORINGS COMPLETED. Established 40 years. Largest experience. Telegrams—“Vivians, Parkside, Cleator Moor.” The Cambrian School of Mines, CEMETERY ROAD, FORTH, GLAM. Principal: WILLIAM THOMAS, M.Inst.M.E., M.R., Society of Arts. A SCHOOL of Unequalled Reputation. No Branches. No Agents- Students get their full money’s worth in Lessons, Specimen Answers and Personal Instruction. Influential Employers give preference to Students prepared at this School. Last Inspectorate Exams., 5 Students, passed and appointed. LESSONS BY POST for Mine Officials and Mining Students, &c. The most accurate way of estimating a Tutor’s success is by the per- centages of his passes. At the 1912 Cardiff Mine Managers’ Home Office Exams. 172 Students sat from this School, 140 of them were successful. At Glasgow Mining Exam. 38 Cambrian Students sat, the 38 were successful. Write immediately for free Booklets, &c. Secretary: Cambrian Mining: School, Glanffrwd, Porth, Glam. BORING for MINERALS, &o. Solid Specimens of tm Strata obtained. Established 1888. Reference if required. Apply to --- Work guaranteed. J. S. DAVIDSON & SON, St. Bees. CUMBERLAND. ________________________________________ YEADONS’ LATEST PATENTED BRIQUETTE MACHINERY, For Coal, Coke, Iron and other Ores. _________ YEADON, SON & CO., <* - • Exagjivieei’s, LEEDS. World-wide Reputation. 35 Years’ Experience. AND ACCESSORIES. -.- WAGONS ALWAYS IN STOCK. QUICK DESPATCH. THOr? W. WARD Ltd., Sheffield. Telegrams—“Forward.” Telephones—4321 (6 lines). PROFESSOR HALDANE’S New Portable Apparatus for Routine Firedamp Estimations; and Apparatus for Approximate Determination of Oxygen by Flame Test. So? e IVXxu leer’s- SIEBE, GORMAN & CO. LTD., “NEPTUNE” WORKS, and 187, Westminster Bridge Road, London, S.E. ..... ALSO MANUFACTURERS OF Rescue Apparatus (Fleuss-Davis Patents), First-Aid Boxes, Reviving Apparatus, Oxygen Compression Pumps, Electric Lamps, &c., &c. Demy Octavo, 176 pages, Cloth. Price 6s. 3d. 45 Original Photographs and Diagrams. (post free). Miners’ Nystagmus: Its Causes and Prevention, By T. LISTER LLEWELLYN, M.D., B.S. (bond.),