92 THE COLLIERY GUARDIAN. January 14, 1916. THE “COLLIERY GUARDIAN” PURCHASERS’ GUIDE TO ADVERTISERS’ SPECIALITIES. Further information can be obtained on reference to the Weekly Alphabetical Index to Advertisers. Acetylene Generators — Acetyienentwickier — G6n£rateurs d’acetylene ACETYLENE Lamps — Acetylenlampen — Lampes d gaz Acetylene Davis, John, and Son (Derby) Ld., Derby Theedam, E. C., Ld., Dudley. Wakefield, C. C., & Co., Cheapside, London, E.C. Wolf Safety Lamp Co., Sheffield ACID PLANT—Saurenlagen—Installations pour la fabrications des acides Daglish, Robert, and Co. Ld., St. Helens, Lancs. Air Analysis Apparatus—Apparate fur Luft- , analyse—Appareils d Vanalyse de I’air Siebe, Gorman and Co. Ld., Westminster, S.E, Air Compressors — Luftkompressoren — com- primeurs d*air Ashton, David, & Co., Aztec Works, Sheffield Beiliss and Morcom Ld., Biriningham. Bever, Dorling and Co. Ld., Bradford, Yorks Daglish, Robert, and Co., St. Helens, Lancashire Davis, John, and Son (Derby) Ld., Derby Hardy Patent Pick Co. Ld., Sheffield Harvey, G. A., & Co. (Ldn.) Ld., Woolwich-r d., S.E. International Channelling Machines Ld., Sheffield Mining Engineering Co. Ld., Sheffield Plowright Bros. La., Chesterfield Pulsometer Engineering, Co. Ld., Beading Beavell and Co. Ld., F. Department, Ipswich Sullivan Machinery Co., 314, Salisbury House, E.C. United States Metallic Packing Co. Ld., Bradford Walker Brothers (Wigan) Ld., Wigan Wood, John, & Sons Ld., Brook Foundry, Wigan Worsley Mesnes Ironworks Ld., Wigan AlR PIPES—Luftrbhre— Tuyaux d air Allen, A., and Son Ld., Lower Gornal, Staffs. Allen, W. G., and Sons (Tipton) Ld., Tipton Ashton, David, & Co., Aztec Works, Sheffield Baker, John, and Son, Thompson-street, Bilston Lewis, William, and Son, Bilston Mining Engineering Co. Ld., Sheffield Scottish Tube Co. Ld., 34, Robertson-St., Glasgow Stewarts & Lloyds Ld., Birmingham and Glasgow Summerhill, J., and Co., Wolverhampton Theedam, E. C., Ld., Dudley AlR PUMPS-Luftpumpen—Pompes dair Clarke, Chapman and Co. Ld., Gateshead-on-Tyne Daglish, Robert, and Co. Ld., St. Helens, Lancs. Mather and Platt Ld., Manchester Pulsometer Engineering Co. Ld., Beading Wood, John, and Sons Ld., Wigan Worsley Mesnes Ironworks Ld., Wigan ALTERNATORS — Wechselstrom - maschinen — Alter- nateurs Holmes, J. H., and Co., Newcastle-on-Tyne Mather and Platt Ld., Manchester Aluminium Castings Coan, B. W., 219, Goswell-road, E.C. Ambulance Carriages, Stretchers, &c.- Kranlcenwagen, Tragbahren, &c. — Ambulances, civieres, &c