February 14, 1913. __________________________________________________________________________________________________ 342 THE COLLIERY GUARDIAN. COOEHTS. PAGE Editorial Articles :— The Coal Industry of India..................... 343 The Invention of the Safety Lamp.............. 343 Articles :— The Determination of Water in Coal............ 327 The Coal Industry of India..................... 329 Electric Cables in Mines ...................... 330 The Beresford Seam at the Snowdown Colliery... 332 The Training of Rescue Brigades............... 336 Colliery Accidents .......................................... 337 Labour and Wages ........................... 344 Tests of Safety Lamps........................ 344 Electrical Equipment of a New Durham Colliery... 346 Notes from South Wales.................................... 347 Obituary.................................... 347 Book Notices................................. 348 Mining and Other Notes ...................... 349 The Freight Market .......................... 350 Open Contracts .............................. 350 Exports of Coal, Coke and Manufactured Fuel from the United Kingdom ................... 351 Coal and Coke Exported from Ports in England, Scotland and Wales ........................ 352 Coal and Coke Shipped for London and Other Ports in the United Kingdom ............... 352 Abstracts of Patent Specifications Recently Accepted 352 Government Publications ..................... 356 Publications Received ........................ 356 New Patents Connected with the Coal and Iron Trades.................................... 356 ►Progress :— Dr. Harger’s Theories Tested in America—Boring for Coal on the French Coast................. 344 Workmen’s Compensation ......................... 336 ...................... Continental Mining Notes ....................... 337 ..................... Coal, Iron and Engineering Companies ........ 350 Parliamentary Intelligence ..................... 352 ................... The Coal and Ibon Trades ................ 338—341, 345 .............. The By-Products Trade ...................... 345 The Tin-plate Trade _____........................ 346 ..... The London Coal Trade .................................. 346 Reports of Meetings: — Manchester Geological and Mining Society...... 333 North of England Institute of Mining and Mechanical Engineers ...................... 333 Mining Institute of Scotland................... 335 Letters to the Editor :— Rescue Apparatus of the Injector and Non-Injector Type — Mining Surveyors and the Surveyors’ Institute................................... 337 Miscellanea :— Mines Rescue Work in North Staffordshire....... 329 Hull Coal Exports—Collieries and Income-tax ... 332 The Yorkshire Miners’ Permanent Relief Fund— Another Contract Case...................... 336 Mr. Edison Awarded a Prize for a New Miners’ Lamp ..................................... 345 Grimsby Coal Exports ........................ 347 South Staffordshire and Warwickshire Institute of Mining Engineers .......................... 348 Shipments of Bunker Coals ...........:_________ 349 Hull Coal Imports—The Price of Gas Coal ....... 356 ________________________________________ ADVERTISEMENTS. _____ ADVERTISEMENT DEPARTMENT. H. Gbbvillb Montgomery, 43, Essex-street, Strand, London, W.C., and 27, Brasenose-street, Manchester. Advertisements are inserted on the last white page and leader page at the following rates:— Situations Vacant and Wanted : One Penny per word (which must be prepaid), minimum 2s. 6d. Other Advertisements : One insertion ... 10s. Od. per inch per insertion. Three insertions 9s. 6d. ,, „ Six insertions ... 9s. Od. ,, ,, A reduction of 25 per cent, is allowed on advertisements of second-hand machinery. ________ per insertion for each inch in depth. CONTRACT ADVERTISEMENTS. Prices fob SPECIAL POSITIONS on application. Prices for ORDINARY POSITIONS Single Column (3 inches wide): For 52 insertions 2s. 6d. „ 26 „ 3s. Od. ,, 13 ,, 3s. 6d. Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. Discounts or Commissions are paid to Auctioneers and Advertising Agents. (A Classified List appears on page 358.) _________________________________________________________ Established 1866. Patents, Designs and Trade Marks. Harris and Mills, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. Telegraphic Address—“ Privilege, London.” Tel. No. Holborn 2763. Circular of useful information and prices for British and Foreign Patents • post free. Chart of 187 Mechanical Motions with description of each, post free 6d. _________________________________________________________ ASSOCIATION OF PRIVATE OWNERS OF RAILWAY ROLLING STOCK. Formed in 1891 for the Protection of the Rights and Interests of Private Owners. Applications for particulars and terms of membership may be sent to the SECRETARY, Clarence Chambers, Gloucester. The Oldest Diamond Drill Company. Established 1872. ]g ORING TOR MINERALS. SPEED AND CERTAINTY. CYLINDRICAL “CORES.” THE AQUEOUS WORKS and DIAMOND ROCK-BORIHC Co. Ltd Guildford St., York Road, Lambeth, London, 8.E. Besides numerous other important Contracts, completed (in 1897) the Deepest Boring in the United Kingdom to 3,500 ft. t Great Experience in Boring for WATER. The Cambrian School of Mines, CEMETERY ROAD, PORTH, GLAM. Principal: WILLIAM THOMAS, M.Inst.M.E., M.B., 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. LOCOMOTIVES For Sale or Hire. ALWAYS IN STOCK. QUICK DESPATCH. TH0® W. WARD Ltd., Sheffield. Telegrams—“Forward.” Telephones—4321 (6 lines). Examination of Flame Caps IN SAFETY LAMPS. Simplest and Most Efficient Apparatus FOR MIXING AIR AND GAS IN DESIRED PERCENTAGES IS MANUFACTURED BY BAIRD & TATLOCK, 45, Renfrew Street. GLASGOW, And nt Manchester, Liverpool Edinburgh. Write to the above address for illustr-ted descriptive pamphlet free on application or see description in “ Colliery Guardian ” of Sept. 27, p. 635. Briquette Machinery Ltd., 161, Water Lane, LEEDS. Machinery for Briquetting Peat, Lignite, Coke, Coal, Iron, Copper, Nickel, Cement; Also Sawdust, Waste Cereals, Offals, Sewage. PATENT COAL DRIER. Price One Shilling, Mounted and Varnished. of England and Wales, showing Lines of Equal MAGNETIC DECLINATION Corrected to January 1,1913; also Inspection Districts and Coalfields. THE COLLIERY GUARDIAN CO. LTD., 30 & 31. Furnival-street, Holborn, London, E.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. (Lond.), &c. WITH A PREFACE BY Professor J. S. HALDANE, F.R.S., M.D., AND A LEGAL APPENDIX BY DOUGLAS KNOCKER, M.B, Barrister-at-Law. __________________ CONTENTS. Description of the Eye—Anatomy : Physiology—(1) General Description of the Disease—(2) Frequency and Resulting Incapacity—(3) Historical Account of the Disease and Theories of its Causation—(4), (5) and (6) Conditions Determining the Occurrence of Nystagmus—(7) Diagnosis and Prognosis—(8) The Etiology of Nystagmus—(9) Pre- ventive Measures and Treatment—(10) Summary and Conclusions — With Appendices: Legal Information — Glossary—References and Bibliography—The Effects of Deficiency of Oxygen on the Light of a Safety Lamp— Test of Ceag Lamp. THE COLLIERY GUARDIAN COMPANY LTD., 30 & 31, Furnival Street, Holborn, London, E.C. Lattice Girder Bridge as per illustration, 96 ft. long, 7 ft. by 7 ft. inside, in three lengths, has been across L. & N.W. Railway, FOR SALE.—Apply, LEAMORE BRICK CO., Walsall. Explosives. — Agent Wanted for the whole of Lancashire to represent high-class manufacturers of several permitted and gelatinous explosives, E.D. fuses, &c.: mu*t have good connection amongst colliery managers.—Apply, Box 5119, Colliery Guardian Office. 30 & 31, Furnival-street, Holborn, London, E.C. Manager’s Assistant.—Wanted, a Youth with knowledge of surveying and levelling to make himself generally useful to manager of colliery in Yorksh’re.—Apply, stating age, experience, and wages required, to Box 5121, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. Wanted, Assistant Surveyor; state salary required. — Apply, GENERAL MANAGER, Pemberton Colliery, Wigan. Wanted, Colliery Assistant for India, well educated, with first-class certificate and good practical experience, age not to exceed 35; five years’ agreement, commencing salary the equivalent, of £280 per annum —Apply, with full details of present and past employments, copies of testimonials, names of references, and photo, stating age, to“Z. P. 448,” care of Deacons, Leadenhall street, London. Wanted, experienced Manager for Coke oven and bye-product plant.—Apply, gi. ing full particulars of training, experience, and stating salary expected, to A. GILLESPIE & SON, 65, Bath-street, Glasgow. Advertiser, age 36, seeks position as UNDER-MANAGER UNDER-LOOKER, at home or abroad ; 24 years’ practical experience with all underground work ; 13 years as district deputy; first-class references —Box 5118, Colliery Guardian Office, 30&31, Furnival-street, Holborn. Condon, E C. Wanted, Assistant in Mining Engineer’s offices in South Wales, one with knowledge of buildings ; neat draughtsman; shorthand typist preferred.—Apply, stating age, experience^ references, and wages required, t> Box 5125, Colliery Guardian Office, 30 & 31, Furnival street, Holborn, London, E U. The Cannop Coal Company Ltd. having completed sinking, have for disposal a quantity of SINKING- PLANT, including Ste