312 THE COLLIERY GUARDIAN. February 7, 1913 Purchasers’ Guide to Advertisers’ Specialities—(continued). Smith Work Baker, John, and Son, Bilston, Staffs British Wagon Co. Ld., Botherham Heenan and Froude Ld., Worcester Lowmoor Co. Ld„ Lowmoor Ironworks, Bradford Wright, Joseph, and Co., Tipton Smoke Helmets Siebe, Gorman and Co. Ld., Westminster, S.E. Speed-Reducing Gears Bridge, David, & Co. Ld., Castleton, Manchester Brown, David, & Sons (Hndd.) Ld., Huddersfield Wood, John, and Sons Ld., Wigan Sphincter Crip Armoured Hose Eeddaway, F., k Co. Ld., Pendleton, Manchester SWttNQS British Wagon Co. Ld„ Botherham Lancaster and Tonge Ld., Pendleton, Manchester Wigan Wagon Co. Ld., Springs Branch, Wigan Stampings Baker, John, and Son, Bilston, Staffs Ghorley Bailway Wagon Co. Ld., Chorley Hardy Patent Pick Co. Ld., Sheffield Lowmoor Co. Ld., Lowmoor Ironworks, Bradford Steam Experts Fell, C. A., Drontleld, near Sheffield Boyles Ld., Irlam, Manchester Steam Fittings British Mannesmann Tube Co. Ld., London Wall Green and Boulding Ld., 28, New Bridge-st., E.C. Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester Bossell, John, and Co. Ld., Alma Works, Walsall Spencer, John, Ld., Tube Works, Wednesbury Stewarts and Lloyds Ld., Birmingham & Glasgow Wellington Tube Works Ld., Great Bridge, Staffs. Steam Mains and Pipe Installations Stewarts and Lloyds Ld., Birmingham & Glasgow Wellington Tube Works Ld., Great Bridge, Tipton SrEAM"@AVINQ APPLIAN&ES Pillatt and Co. Ld., Stapleford, Nottingham Boyles Ld., Irlam, Manchester Yorkshire Boiler Co. Ld., Bradford Stzam Traps Alley and MacLellan Ld., Polmadie, Glasgow Auld, D., and Sons, Whitevale Foundry, Glasgow Bailey, W. H., and Co. Ld., Salford, Manchester Hcpkinson, J., and Co. Ld., Huddersfield Lancaster & Tonge Ld., Pendleton, Mar Chester Boyles Ld., Irlam, Manchester Stewarts A Lloyds Ld., Birmingha " and Glasgow United States Metallic Packing Co. Ld., Bradford Wright, Joseph, and Co., Tipton Steam Winched Bridge, David, A Co. Ld., Castleton, Manchester Clarke, Chapman & Co. Ld.. Gateshead-on-Tyne Phillips, C. D., Newport, Mon. Wood, John, and Sons Ld., Wigan Steel Cooke, William, and Co. Ld., Tinsley, Sheffield Hardy Patent Pick Co. Ld., Sheffield Latch and Batchelor Ld., Hay Mills, nr. B’ham Mining Engineering Co. Ld. (The), Sheffield Shelton Iron, Steel & Coal Co. Ld., Stoke-on-Trent Stewarts & Lloyds Ld., Birmingham and Glasgow Thompson and Co., Wigan Waterfall, H. &B., & Barber, Bridge-st., Sheffield Steel Blooms Billets Benton, B. M., and Co., Sheffield Scott, Walter, Ld., Leeds Steel Works, Leeds Steel Flats and Rounds Scott, Walter, Ld., Leeds Steel Works, Leeds Steel Tinbars Scott, Walter, Ld., Leeds Steel Works, Leeds Stencil Plates, Steel Stamps, &c. Pryor, Edward, & Son, 68, West-street, Sheffield Stone Breakers Hardy Patent Pick Co. Ld., Sheffield Bobey and Co. Ld., Lincoln Structural Steel Work Hardy Patent Pick Co. Ld., Sheffield Heenan ana Froude Ld., Worcester Leech, Goodall & Co.. Hunslet, Leeds Norton’s (Tividale) Ld., Tipton Bailway and General Engineering Co. Ld., Notts Scott, Walter, Ld., Leeds Steel Works, Leeds Wright, Joseph, and Co., Tipton Sulphate of Ammonia Plant Hoppers’ (The) Coke Oven and Bye-Product Co., Sheffield Simon-Carves Ld., 20, Mount-street, Manchester Sulphur Recovery Plant Coke Oven Construction Co. Ld., Sheffield Daglish, Eobt., and Co. Ld., St. Helens, Lancs. Hoppers’ (The) Coke Oven and Bye-Product Co., Sheffield Superheaters Clarke, Chapman & Co. Ld., Gateshead-on-Tyne Heenan & Froude Ld., Worcester and Manchester Pulsometer Engineering Co. Ld., Beading Stringer, John, and Son, Dept. 11, Blackburn Surgical Appliances Surplus Steam Valves (Full Bore) Alley and MacLellan Ld., Polmadie Glasgow Auld, D., and Sons, Whitevale Foundry, Glasgow Hopkinson, J., and Co. Ld., Huddersfield Boyles Ld., Irlam, Manchester Surveying (Books on) Thomas, Wm., Cambrian Mining School, Forth Surveying (Instruction) Thomas, Wm., Cambrian Mining School, Porth Surveying Instrument Makers Davis, E., 2, Aire-street, Leeds Davis, John, and Son (Derby) Ld., Derby Harling, W. H., 47, Finsbury Pavement, London Stanley, W. F., & Co. Ld.. 286, High Holborn, W.C. Thornton, A. G., Ld., King-st. West, Manchester Switch Boards Davis, John, and Son ( Derby) Ld., Dei by Haslam and Schontheil Ldc, Cardiff Switch Gear British Insulated and Helsby Cables Ld., Prescot Divis, John, and Son (Derby) Ld., Derby Haslam and Schontheil Ld., Cardiff Swivels (Ball-Bearing) Bridge, David A Co., Ld., Castleton, Manchester Youngs, Byland-street Works, Birmingham Tamping Plugs Tanks Bagnall, W. G., Ld., Stafford Daglish, Bobert, and Co. Ld., St. Helens, Lancs. Harvey, G. A., & Co., Woolwich-rd.. London, S.E’ Isca Foundry & Engineering Co., Newport, Mon. Leech. Goodall & Co., Hunslet, Leeds Mather and Platt Ld., Manchester Stringer, John, and Son, Dept. 11, Blackburn Theedam, E. C., Ld., Dudlev Ward, Thos. W., Limited, Albion Works, Sheffield Wright, Joseph, and Co., Tipton Wood, John, and Sons Ld., Wigan Yorkshire Hennebique Contracting Co. Ld., Leeds Tanks (Ferro Concrete) Tar Distilling Plant Coke Oven Construction Co. Ld., Sheffield Daglish, Bobt., and Co. Ld., St. Helens, Lancs. Hoppers’ (The) Coke Oven and Bye-Product Co., Sheffield Simon-Carves Ld., 20, Mount-street. Manchester Technical Education Thomas, Wm., Cambrian Mining School, Porth Southern, T. A., Universal Mining School, Cardiff Telephones British Insulated and Helsby Cables Ld., Prescot Davis, John, and Son (Derby) Ld., Derby Haslam and Schontheil Ld., Cardiff Timber (Colliery) Baird, J, W., and Co., West Hartlepool Osbeck and Co., Newcastle-on-Tyne Tipplers. Bagnall, W. G., Ld., Stafford Cantrell, W. E„ and Co. Ld., Beeston, N<.tts Heenan and Froude Ld., Worcester Leech, Goodall & Co., Hunslet, Leeds Orenstein and Koppel—Arthur Koppel (Amal- gamated), 27, Clements-lane, London, E.C. Spencer and Co. Ld., Melksham, Wilts Wright, Joseph, and Co., Tipton Wood, John, and Sons Ld., Wigan Alldays & Onions Pneumatic Engineering Co. Ld., Birmingham Fell, C. A., Dronfield, near Sheffield Hardy Patent Pick Co. Ld., Sheffield Holland Drilling Co., 56, Moorgate-street, E.C. Tangyes Ld., Cornwall Works, Birmingham Willcox, W. H., A Co. Ld.,23, Southwark-st., S.E. Tram and Wagon Corner Plates Baker, John, and Son. Bilston, Staffs British Wagon Co. Ld., Botherham Chorley Bail way Wagon Co. Ld., Chorley, Lancs. Theedam, E. C., Ld., Dudley Transformers (Electrical) Davis, John, and Son (Derby) Ld., Derby Transport Plant Bleichert’s Aerial Transporters Ld., 99/100, Palm- erston House, Bishopsgate, London, E.C. Trommels Barns, W., and Son, Globe Works, Holloway Heenan & Froude Ld., Worcester and Manchester Robey and Co. Ld., .Lincoln Spencer and Co. Ld., Melksham, Wilts Truck Shunting Plants Bleichert’s Aerial Transporters Ld., 99/100, Palm- erston House, Bishopsgate, London, E.C. Tubbing and Well Cylinders Head, Wrightson and Co. Ld.. Stockton-on-Tees- Wood, John, and Sons Ld.. Wigan Tub Drawbars Chorley Bail way Wagon Co. Ld., Chorley- Lancs. Ormerod, Edward, Atherton, near Manchester Benton, B. M., and Co., Sheffield Theedam, E. C., Ld., Dudley Tube Expanders Hardy Patent Pick Co. Ld., Sheffield Youngs, Ryland-street Works, Birmingham Tube Fittings British Mann earn arm Tube Co. Ld., Salisbury House, London Wall, E.C. Lewis, Edwin, and Sons Ld., Wolverhampton Bussell, John, & Co. Ld., Alma Tube W’ks, Walsall XvLlDoUlX, v UIXXL, Cv vyv. XJLL., Xlllllit X uUL ,. —- -- Spencer, John, Ld., Wednesbury Stewarts & Lloyds Ld., Birmingham and Glasgow Wellington Tube Works Ld., Great Bridge, Staff. Tubes (Iron and Steel) Allen, W. G., and Sons (Tipton) Ld., Tipton British Mannesmann Tube Co. Ld., Salisbury House, London Wall, E.C. Lewis, Edwin, and Sons Ld., Wolverhampton Lewis, William, and Son, Bilston Bussell, John, &Oo. Ld., Alma Tube W’ks, Walsall Spencer, John, Ld., Tube Works, Wednesbury Stewarts and Lloyds Ld., Birmingham & Glasgow Wellington Tube Works Ld., Great Bridge, Staff. Tub Greasers and Controllers Theedam, E. C., Ld., Dudley Tubs (Colliery) Allen, A., and Son Ld., Lower Gornal, Staffs. Allen, W. G., and Sons (Tipton) Ld., Tipton Bagnall, W. G., Ld., Stafford British Wagon Co. Ld., Botherham Chorley Bailway Wagon Co. Ld., Chorley, Lancs- Humble, Stephen, 9, Victoria-st., London, S.W. Longbotham, B. H., and Co. Ld., Wakefield Theedam, E. C., Ld., Dudley Wigan Wagon Co. Ld.. Springs Branch, Wigan Wright, Joseph, and Co., Tipton Tunnel Segments Eailway and General Engineering Co. Ld., Notts Turbines Beiliss and Morcom Ld., Birmingham British Westinghouse Electric and Manufacturing Co. Ld., Manchester Mather and Platt Ld., Manchester Turbines (Exhaust) Beiliss and Morcom Ld., Birmingham Turbo Compressors Turntables Heenan and Froude Ld., Worcester Isca Foundry & Engineering Co., Newport, Mon. Orenstein and Koppel—Arthur Koppel (Amal gamated). 27, Clements-lane, London, E.C. Bailway and General Engineering Co. Ld., Notts Benton, B. M., and Co., Midland Works, Sheffield Summerson, Thomas, and Sons Ld., Darlington Thompson and Southwick Ld., Tamworth Wright, Joseph, and Co., Tipton Tuyeres Alldays & Onions Pneumatic Engineering Co. Ld., Birmingham Baker, John, and Son, Bilston, Staffs Bailway and General Engineering Co. Ld., Notts Boyles Ld., Irlam, Manchester Bussell, John, and Co. Ld., Walsall Stewarts & Lloyds Ld., Birmingham and Glaagow Theedam, E. C. Ld. Dudley Valuers Eadford, B. H., Son, and Squire, Sheffield Stringer, John, and Son, Blackburn Valves Alley and Maclellan Ld., Polmadie, Glasgow Auld, D., and Sons, Whitevale Foundry, crlasgow Bailey, W. H., and Co. Ld., Salford, Manchester Cort, Arthur, A Co., 303|, Camberwell-rd., London Daglish, Bobert, and Co. Ld., St. Helens, Lancs. Green and Boulding Ld., 28, New Bridge-st., E.C. Haslam and Schontheil Ld., Cardiff Hopkinson, J., and Co. Ld., Huddersfield Mather and Platt Ld., Manchester Boyles Ld., Irlam, Manchester Bussell, John, A Co.Ld.,Alma Tube Works, Walsall Vices Alldays & Onions Pneumatic Engineering Co. Ld., Birmin gham Frost, Albert, and Co., Sheffield Glover, M., and Co., Holbeck-lane, Leeds Hardy Patent Pick Co. Ld., Sheffield Theedam, E. C., Ld., Dudley Youngs, Byland-street Works, Birmingham Vulcanised Fibre Cort, Arthur, A Co., 303|, Camberwell-rd., London Washers Baker, John, and Son, Bilston, Staffs Chorley Bailway Wagon Co. Ld., Chorley, Lancs. Cort. Arthur, A Co., 303|, Camberwell-rd., London Jardine, John, Deering-street, Nottingham Benton, B. M., and Co., Sheffield Simon-Carves Ld., 20, Mount-street, Manchester Theedam. E. C., Ld., Dudley Wright, Joseph, and Co., Tipton Waterproof Covers and Sacks Mudford, J. H., A Sons, 55, Exchange-st., Sheffield Waterproof Garments Northern Eubber Co., The Wicker, Sheffield Water Reducing Valves Auld, D., and Sons, Whitevale Foundry, Glasgow Boyles Ld., Irlam, Manchester Water Filters Pulsometer Engineering Co. Ld., Beading Boyles Ld., Irlam, Manchester Wright, Joseph, and Co., Tipton Water Softening and Purifying Mather and Platt Ld., Manchester Pulsometer Engineering Co. Ld., Beading Boyles Ld., Irlam, Manchester Wright, Joseph, and Co., Tipton Water Tube Boilers Clarke, Chapman A Co. Ld.,;Gateshead-on-Tyne Fraser A Chalmers Ld., 3, London Wall Bldgs.,E.C Water Wheels Welding Apparatus Well Tubes British Mannesmann Tube Co. Ld., Salisbury House, London Wall, E.C. “ Bussell, John, and Co. Ld., Alma Works, Walsall Spencer, John, Ld., Tube Works, Wednesbury Stewarts and Lloyds Ld., Birmingham A Glasgow Wellington Tube Works Ld., Wellington, Staffs. Weighing Machinery Thompson and Co., Wigan Wheelbarrows Allen, W. G., and Sons (Tipton) Ld., Tipton Baker, John, and Son, Thompson-street, Bilston Hardy Patent Pick Co. Ld., Sheffield Harvey, G. A., & Co., Woolwich-rd., London, S.E. Haslam and Schontheil Ld., Cardiff Lewis, Wm., and Son, Bilston, Staffs. Orenstein and Koppel—Arthur Koppel (Amal- gamated), 27, Ciements-lane, London, E.C. Theedam, E. C., Ld., Dudley Wheels Axles and Tyres Bagnall, W. G., Ld., Stafford British Wagon Co. Ld., Botherham Brown, David, A Sons (Hudd.) Ld., Huddersfield Chorley Bailway Wagon Co. Ld., Chorley Hardy Patent Pick Co. Ld., Sheffield Lancashire A Yorkshire Wagon Co. Ld., Heywood Lancaster and Tonge Ld., Pendleton, Manchester Llewellyn and Cubitt, Ld., Pentre, Glam. Moy, Thomas, Ld., Bailway Works. Peterborough Orenstein and Koppel—Arthur Koppel (Amal- gamated, 27, Clements-lane, Lonaon, E.C. Bailway and General Engineering Co. Ld., Notts Benton, B. M., A Co., Midland Works, Sheffield Thompson and Southwick, Ld., Tamworth Wigan Wagon Co. Ld., Springs Branch, Wigan Wood, John, A Sons Ld., Brook Foundry, Wigar Winches Alldays A Onions Pneumatic Engineering Co. Ld. Birmingham Clarke, Chapman A Co. Ld., Gateshead-on-Tyne Bridge, David, A Co. Ld., Castleton, Manchester Hardy Patent Pick Co. Ld., Sheffield Tangyes Ld., Cornwall Works. Birmingham Youngs, By land-street Works, Birmingham Winding Engine Indicators Daglish, B., and Co., St. Helens, Lancashire Heenan and Froude Ld., Worcester Bobey and Co. Ld., Lincoln Wood, John, and Sons Ld., Wigan Wire British Insulated and Helsby Cables Ld., Prescot Cooke, Wm., and Co. Ld., Tinsley, Sheffield Elliot, George, A Co. Ld., 16, Gt. George-st., S.W Glover, Wm. Jas., and Co., St. Helens, Lancs. Latch and Batchelor Ld., Hay Mills, Birmingham Benton. B. M.. and Co., Sheffield Siiaw, John, Ld., Sheffield Wire Mesh and Gauze Ackroyd A Best Ld., Morley, near Leeds Barns, W., and Son, Holloway, London, N Cousland, Alex., and Son, 3, Mitchell-st., Glasgow Davis, John, and Son (Derby) Ld., Derby Harvey, G. A., & Co., Woolwich-ra„ London, S.E. Theedam, E. C., Ld., Dudley Wire Rope Greaser Mining Engineering Co. Ld. (The), Sheffield Theedam, E.C., Ld., High-street, Dudley Wakefield, C. C., and Co., 27, Cannon-street, E.C, Wire Rope Pulley Blocks Hardy Patent Pick Co. Ld., Sheffield Tangyes Ld., Cornwall Works, Birmingham Youngs, Byland-street Works, Birmingham Wire Work Barns, W„ and Son, Globe Works, Holloway, N. Cousland, Alex., and Son, 3, Mitchell-st., Glasgow Harvey, G. A., & Co., Woolwich-rd., London, S.F. Shaw, John, Ld., Sheffield Wood-working Machinery Glover, M., and Co., Holbeck-lane, Leeds Stringer, John, and Son, Dept. 11, Blackburn Worm Gearing Bridge, David, A Co. Ld., Castleton, Manchester Brown, David, A Sons (Hudd.) Ld., Huddersfield BRlftUETTE MACHINERY. “The ADAPTABLE” Earthing & Continuity Clip. WHY! Stock so many different sizes of other Clips? WHEN this Clip will fit any size Cable, Conduit or Pipe. I NEW PATENTED IMPROVEMENTS R. MIDDLETON, Sheepscar Foundry, Leeds, England. SOLE PATENTEE AND MAKER. Telegraphic Address—“Hydraulic, Leeds.” Telephone—No. 214 Leeds. “A B C” Sth Edition, and Lieber’s Telegraphic Codes used. Meets the requirements of the Home Office. Made in Four Strengths to suit the Carrying Capacity Required. i “®a No. 3 clip » Hall Full Size »\ MANN &PNGLE, 13, Albert Place, Bridge St., MANCHESTER Tel. No. 5635 City. (OR YOUR SUPPLIER). NATURAL HISTORY OF COAL By E. A. NEWELL ARBER, M.A., F.L.S., F.G.S. 164 pages. 21 Illustrations. THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival Street, Holborn, London, E.C.