October 22, 1915. THE COLLIERY GUARDIAN 853 “The World.” WEEKLY. ILLUSTRATED. PRICE 6d. Annual Subscription (Post Free): UNITED KINGDOM, 21s. FOREIGN COUNTRIES, 28s. PRINCIPAL FEATURES: CURRENT EVENTS, by the Editor, on Trade, Commerce, and all Shipping and Commercial Questions, especially, at this time, in connection with the War. SHIPPING in PARLIAMENT, by Special Representative. WAR RISKS, by an Expert in Marine Insurance. SHIP SALES and CONTRACTS. NEPTUNE’S MAIL, with News and Notes about the War and other matters. ILLUSTRATED ARTICLES. TECHNICAL ARTICLES, by “ An M.I.N.A.” NAVAL and ENGINEERING NOTES. REPORTS from the SHIPPING CENTRES. REPORTS on FREIGHTS, whether affected by the War or not. MARINE INSURANCE NOTES (of special interest at this time). TRADE and FINANCE. LAUNCHES and TRIAL TRIPS. Offices of the “Shipping World Ltd.’’ Effingham House, Arundel Street, Strand, London, W.C. Telegrams and Cables—“ Shipping World, London.” Telephone—2381 Gerrard. PATENT GEORGE DESCAMPS, 36, Abbeydale Rd. South, SHEFFIELD. Belgian Engineers, 94, Rue St. Lazare, Quick Delivery From Stock. /J w A /J 3 MEDIUM AIR MACHINES. 2 SMALL 1 SMALL ELECTRIC IS' ; - Z HURD COALCUTTER AND ENGINEERING CO., Works : 35, Pitt Street, GLASGOW. 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. (Load.), &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. CONTEXTS. Description of the Eye—Anatomy: Physiology—(1) Genera) 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 CO. LTD., 30 & 31, Furnival-street, Holborn, London, E.C. THE SOUTH WALES COALFIELD. PART II. By Henry K. Jordan, F G.S. (Past President and first Gold Medallist of the South Wales Institute of Engineers). This Paper, which deals with the western part of the Coalfield, has just been published by the South Wales Institute of Engineers. It consists of 81 pages g£ printed matter with sections and diagrams. The large drawings are issued separately and comprise :— 1. A Horizontal Section across the anthracite region of Llandybie and Pant-y ffynnon, and via the Dulais Valley to the sea at Swansea. It is drawn to a scale of six inches to one mile, is 8 ft. in length, mounted on linen, and geologically coloured. 2. Comparative Sections of the Lower Measures in the following areas (A) Neath Valley. * (B) Swansea Valley. (C) Brynamman District. (D) Amman Valley. (E) Ammanford. (F) Loughor Valley. (G) Gwendraeth District. - -,------------- (H) Gwendraeth District. These are drawn on one sheet, about 35 by 30 in., mounted on linen, to a scale of 200 ft. to 1 in. 3. A Map of Swansea District, on a scale of 6 in. to one mile, showing the outcrops of the coal seams. A limited number of the above are for sale, and may be obtained from The Secretary, The South Wales Institute of Engineers, CARDIFF. Price £1 la., Postage Extra. “ The South Wales Coalfield,” Part I., by Mr. H. K. Jordan, published in 1908, price £2 2s., dealt with the eastern half of the Coalfield, and may be obtained from the Secretary. STEEL t FILES. FANSHAWE & MARRIOTT ATKINSON, Steel and File Manufacturers, Ecclesfield, near Sheffield. Telegraphic Address: “ Fansha, Ecclesfield.” Purchasers' Guide to Advertisers’ Specialities -(continued). ?IPE JOINT PASTE — Kitt* fur Rohrverbindungen —Enduit pour accouplements Hopkinson, J., and Co. Ld., Huddersfield Hudson, John, & Co.’s Successors, Mansell-st., E. Taylor, S. T., and Sons, Scotswood-on-Tyne Theedam, E. C., Ld., Dudley (Pipes (Steam and Water)—Damp/- Wass«r- rbhre—Tuyaux d vapeur et d eau Daglish, Robert, and Co. Ld., St. Helens, Lancs. Fairbanks, Morse & Co. Ld., 87, Southwark-st.,S.E. Isca Foundry Co. Ld., Newport, Mon. Lewis, Edwin, and Sons, Wolverhampton Pulsometer Engineering Co. Ld., Beading Russell, John, & Co. Ld., Alma Tube Wks., Walsall Scottish Tube Co. Ld., 34, Robertson-st., Glasgow Stewarts and Lloyds La., Birmingham Piston Rings Standard Piston Ring and Engineering Co. Ld., Don-road, Sheffield Trist, Ronald, and Co. Ld., 4, Lloyds-avenue, E.C. PISTONS—Kolbenstdnge—Pistons Daglish, Robert, and Co. Ld., St. Helens, Lancs. Mather and Platt Ld., Manchester PISTON Springs —• Kolbenfeder — Ressorts pour pistons Mather and Platt Ld., Manchester Pit Pony Eye and Head Guard— Aug.- und Kopfschutzvorrichtung fur Grubenpferde — Coiffure protectrice pour cheveaux d’attelage Legard and Son, Leather Merchants, Barnsley ^Pit-prop Sharpening Machine Oxley, F.» and Co., Baxterley, Atherstone 'PIT PROPS (Steel) — Stahlerne Grubenstempel — Etanqons en acier Afina Mining Outfit Co., Willenhall, Staffs. Bute Works Supply Co. Ld., Bute Docks, Cardiff Firth, William, Ld., Leeds Henderson and Glass, Liverpool Lewis, Edwin, and Sons, Wolverhampton Benton, B. M., and Co., Market-place Buildings, Sheffield Scottish Tube Co. Ld., 34, Robertson-st., Glasgow Scott, Walter, Ld., Leeds Steel Works, Leeds Shelton Iron, Steel, & Coal Co. Ld., Stoke-on-Trent Spencer, John,Ld.,Globe TubeWorks, Wednesbury Ward, Thos. W., Ld., Albion Works, Sheffield Wright’s Forge and Engineering Co. Ld., Tipton "Pit Props (Supporters and Liberators) Green, James, 40a, Belle Green-lane, Ince, Wigan PIT PROPS (Wood)—Grubenholzer—Etanqons de bois Baird, J. W., and Co., West Hartlepool Forslind, C. A., and Son, West Hartlepool Osbeck and Co., Newcastle-on-Tyne PIT Prop WiTHDRAWERS — Stempelauszieher — Ex- tracteurs d’ttangons Davis, John, and Son (Derby) Ld., Derby Hardy Patent Pick Co. Ld., Sheffield Hodgson, E. W., & Co., 24, Norfolk-row, Sheffield PIT WATER Gauges—Grubenwasserstandsmesser— Indicateurs d*eau dans les puisards Davis, John, and Son (Derby) Ld., Derby Plates for Colliery Notices—Notizentaifein^- Plaques d’affichage Davis, John, and Son (Derby) Ld., Derby Lawson, John, and Son, Sheffield Protector Lamp and Lighting Co. Ld., Eccles Theedam, E. C., Ld., Dudley -Plates (Iron and Steel)—Eisenbiech u. stahi- blech—T6les en fer et en acier Chorley Railway Wagon Co. Ld., Chorley, Lancs Firth, Wm., Ld., Water-lane, Leeds Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Stewarts and Lloyds Ld., Birmingham & Glasgow POINTS AND Crossings— Weichen und Gleiskreuz- ungsweichen—Aiguilles et eroisements de voie Bagnall, W. G., Ld., Stafford Du Croo & Brauns, 53, Victoria-st., London, S.W. Firth, William, Ld., Leeds Goodwin and Co., Queen-street, Sheffield Isca Foundry Co. Ld., Newport, Mon. Mining Appliances Co., 32, Church-st., Sheffield Benton, B. M., and Co., Midland Works, Sheffield Summerson, Thomas, and Sons Ld., Darlington Ward., Thos. W., Ld., Albion Works, Sheffield PORTABLE Railways — Tragbar. Eismbahnen — Chemins de fer transportables Allen, W. G., and Sons (Tipton) Ld., Tipton Bagnall, W. G., Ld., Stafford Bute Works Supply Co. Ld., Cardiff Du Croo & Brauns. 53, Victoria-st., London, S.W. Fairbanks, Morse & Co. Ld., 87, Southwark-st., S.E. Firth, William, Ld., Leeds Hardy Patent Pick Co. Ld., Sheffield Renton, B. M., and Co., Midland Works, Sheffield Summerson, Thomas, and Sons Ld., Darlington Preparation for Exams. — vorberettun, fur Examen—Preparation pour les examens Southern, T. A., Universal Mining School, Cardiff Thomas, Wm., Mining School, Porth, Glam. Preservative (for Plant) — SchnUaMt™&— Enduit protecteur Blume, Chas. H., The White Building, Sheffield Wailes Dove Bitumastic Ld., Newcastle-on-Tyne Printing (for Coaland Iron Co’S.)—Druckmim —Imprimenes Colliery Guardian Co. Ld., Holborn, E.C. PUBLIC ATION 8—Ve rldger—Editeurs Colliery Guardian Co. Ld., Holborn, E.C. Griffin, Charles, and Co. Ld., London, W.C. Southern, T. A., Universal Mining School, Cardiff PULLEY Blocks—Flaschenzuge—Palans Hardy Patent Pick Co. Ld., Sheffield Tangyes Ld., Cornwall Works, Birmingham Theedam, E. C., Ld., Dudley Youngs, Ryland-street Works, Birmingham Pulleys (Haulage and Shaft) — SniKhmbm— Poulies Bever, Dorling and Co. Ld., Bradford, Yorks. Daglish, Robert, and Co. Ld., St. Helens, Lancs. Fraser, Douglas, & Sons Ld., Arbroath, Scotland Frost, Albert, and Co., Sheffield Green, William, & Co. (Ecclesfield) Ld., Eccles- field, near Sheffield Humble. Steuben. 9. Victoria-st., London, S.W. Spencer and Co. Ld., Melksham, Wilts Thompson and Southwick Ld., Tamworth Walker Bros. (Wigan) Ld., Wigan Wood, John, & Sons Ld., Brook Foundry, Wigan Worsley Mesnes Ironworks Ld., Wigan PULLEYS (Pit Head)—Fbrderseilscheiben—Molettes Bever, Dorling and Co. Ld., Bradford Daglish, Robert, and Co. Ld,., St. Helens, Lancs. Fraser, Douglas, & Sons Ld., Arbroath, Scotland Green, William, & Co. (Ecclesfield) Ld., Eccles- field, near Sheffield Head, Wrightson and Co. Ld., Stockton-on-Tees Mining Appliances Co., 32, Church-st., Sheffield Spencer ana Co. Ld., Melksham, Wilts 'Thompson and Co. Wigan Thompson and Southwick Ld., Tamworth Wood, John, & Sons Ld., Brook Foundry, Wigan Worsley Mesnes Ironworks Ld., Wigan Pump Buckets and Strips—Pumpenkoiben u. Zubehbr—Pistons de pompes, et accessoires Daglish, Robert, and Co. Ld., St. Helens, Lancs. PUMP Packing—Pumpenpackung—Etoupes pour les pompes United States Metallic Packing Co. Ld., Bradferd Willcox, W. H., & Co. Ld., 32, Southwark-st., S.E. Pumps and Pumping Machinery—Pwnpen und Wasser haltung sanlag en — Pompes et appareils d’evuisement Bever, Dorling and Co. Ld., Bradford, Yorks. Bumsted and Chandler Ld., Hednesford, Staffs. Clarke, Chapman and Co. Ld., Gateshead-on-Tyne Daglish, Robert, and Co. Ld., St. Helens, Lancs. Davis, John, and Son (Derby) Ld., Derby Evans, Joseph, & Sons (Wol. Ld.), Wolverhampton Fairbanks, Morse* Co. Ld.,87,Southwark-st.,S.E. Hathorn, Davey and Co. La., Leeds Isca Foundry Co. Ld., Newport, Mon. Lancaster and Tonge Ld., Pendleton, Manchester Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Mather and Platt Ld., Manchester Middleton, Robert, Sheepscar Foundry, Leeds Pearo, Frank, & Co. Ld., West Gorton, Manchester Phillips, C. D., Newport, Mon. Pratchitt Bros. Ld., Carlisle Pulsometer Engineering Co. Ld., Reading Sandy croft Ld., Chester Shore, T., and Sons, Etruria, Stoke-on-Trent Tangyes Ld., Cornwall Works, Birmingham Willcox, W. H., & Co. Ld.,32-38,Southwark-st.,S.E. Wood, John, & Sons Ld., Brook Foundry, Wigan Worsley Mesnes Ironworks Ld., Wigan Pumps (Turbine) — Turbopumpen — Pompes d turbine Mather and Platt Ld., Manchester Pulsometer Engineering Co. Ld., Reading PUNCHING BeARS—Lochstanzmaschinen—Perceuses Tangyes Ld., Cornwall Works, Birmingham Youngs, Ryland-street, Birmingham RAIL BENDERS—Schienenbiegemaschinen—Machines a cintrer les rails Firth, William, Ld., Leeds Hardy Patent Pick Co. Ld., Sheffield Renton, B. M., and Co., Midland Works, Sheffield Tangyes Ld., Cornwall Works, Birmingham Theedam, E. C.» Ld., Dudley Rail Sawing Machines—Schimmtagt—Smn p«ur rails Youngs, Ryland-street Works, Birmingham Rails (Iron AND Steel)—Schienen aus Eisen u. Stahl—Rails en fer et en acier Bagnall, W. G., Ld., Stafford Bute Works Supply Co. Ld., Cardiff Firth, William, Ld., Leeds Goodwin and Co., Oueen-street, Sheffield Marple & Gillott La., Coronation Bldgs., Sheffield Renton, B. M., and Co., Midland Works, Sheffield Scott, Walter, Ld., Leeds Steel Works, Leeds Shelton Iron, Steel & Coal Co. Ld., Stoke-on-Trent Summerson, Thomas, and Sons Ld., Darlington Ward, Thos. W., Ld., Albion Works, Sheffield Railway Carriages and Wagons — Eisenbahn- Wagen u.- Wagons—Voitures et wagons de chemins defer Allen, W. G., and Sons (Tipton) Ld., Tipton Birmingham Railway Carriage and Wagon Co. Ld., Smethwick, Birmingham Bristol * S. Wales Railway Wagon Co. Ld., Bristol Cambrian Wagon Co. Ld., Cardiff Chorley Railway Wagon Co. Ld., Chorley Du Croo & Brauns, 53, Victoria-st., London, S.W. Hardy Patent Pick Co. Ld., Sheffield Head, Wrightson and Co. Ld., Stockton-on-Tees Lancashire & Yorkshire Wagon Co. Ld., Heywood Lincoln Wagon and Engine Co. Ld., Lincoln Locker’s Wagon Co. La., New Whittington, near Chesterfield Marple * Gillott Ld., Coronation-bldgs., Sheffield Midland Railway Carriage and Wagon Co. Ld., Midland Works, Birmingham Moy, Thomas, Ld., Bail way Works, Peterbore* North Central Wagon Co. Ld., Rotherham Bigley, Wm., Bui well. Nettingham Railway Cabbiagkb and Wagons—Continued. Bolling Stock Co., Darlington Wigan Wagon Co. Ld., Springs Branch, Wigaa RAILWAY Plant — Eisenbahnanlagen — Equipage pour chemins de fer Avonside Engine Co. Ld., Bristol Birmingham Railway Carriage and Wagon Co. Ld., Smethwick, Birmingham Bute Works Supply Co. Ld. Bute Docks, Cardiff Du Croo & Brauns, 53, Victoria-st., London. S.W Firth, William, Ld., Leeds Hardy Patent Pick Co. Ld., Sheffield Head, Wrightson and Co. Ld., Stockton-on-Tees Isca Foundry Co. Ld., Newport, Mon. Marple & Gillott Ld., Coronation-bldgs., Sheffield Midland Railway Carriage and Wagon Co. Ld., Midland Works, Birmingham Renton, B. M.,and Co., Midland Works, Sheffield Shelton, Iron, Steel*Coal Co. Ld., Stoke-on-Treat Summerson, Thomas, and Sons Ld., Darlington Thompson and Co., Wigan Ward, Thos. W., Ld., Albion Works, Sheffield Youngs, Ryland-street Works, Birmingham Railway Plant (Electrical)—Eiektrische Eisen- bahnanlagen—Equipage pour voies 'erries flee- triques Mather and Platt Ld., Manchester Railway Wagon AssociATiON8--r«™n«ffw»ni>aM» wagonbesitzer—Associations des propri4tairee de material roulant Association of Private Owners of Railway Bolling Stock, Clarence-chambers, Gloucester Chorley Railway Wagon Co. Ld., Chorley, Lanes. Railway Wagon Financiers — Eisenbahnwage* Vermieter — Fournisseurs ■ louers de matiria roulant Bristol & S. Wales Railway Wagon Co. Ld., Bristol Chorley Railway Wagon Co. La., Chorley, Lanes, Lincoln Wagon and Engine Co. Ld., Lincoln Locker’s Wagon Co. Ld., New Whittington, nwur Chesterfield 8 ’ North Central Wagon Co. Ld., Rotherham Railway Wagon Repairers — Eisenbahnwagen reparaturwerkstdtte—Reparation de wagons Birmingham Railway Carriage and Wagon Co. Ld.. Smethwick, near Birmingham Bute Works Supply Co. Ld., Cardiff Chorley Railway Wa^on Co. Ld., Chorley Lancashire & Yorkshire Wagon Co. Ld., Heywood Lincoln Wagon and Engine Co. Ld., Lincoln Locker’s Wagon Co. Ld., New Whittongton, nea< Chesterfield Moy, Thomas. Ld., Railway Works, Peterborough North Central Wagon Co. Ld., Rotherham Bigley, Wm., Bulwell, Nottingham Railway Wagons (Tipping)—Kippwagona-Wagone basculants Allen, W. G., and Sons (Tipton) Ld., Tipton Bagnall, W. G., Ld., Stafford. Bute Works Supply Co. Ld., Bute Docks, Cardiff Chorley Railway Wagon Co. Ld., Chorley, Lanes Du Croo & Brauns, 53, Victoria-st., London, S.W Goodwin and Co., Queen-street, Sheffield Rakes (Pit)—Kratzen—Racles Baker, John, and Son, Bilston, Staffs REDUCING Gear—Zentratorkupplungenr-Engrenagee a reduction de vitesse Brown, David, and Sons (Hudd.) Ld., Huddersfield Coventry Chain Co. Ld., Coventry Reducing Valves (Full Bore, Standard, &c.) —Re d uktionsventile—D^tendeurs Auld, D., and Sons, White vale Foundry, Glasgow Baldwin, James, and Co., Keighley, Yorks Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester Refrigerators — KMma.chinm—Appw«« fr gortfiques Pulsometer Engineering Co. Ld., Raiding