1192 THE COLLIERY GUARDIAN December 4 1914. THE “ COLLIERY GUARDIAN ” PURCHASERS’ GUIDE TD ADVERTISERS' SPECIALITIES. Further information can be obtained on reference to the Weekly Alphabetical Index to Advertisers. Acetylene Generators — Acetylenentvoickler — Gdn&rateurs d’acetylene Lyell, J. C., and Co. Ld., 113, Gt. Portland-st., W. ACETYLENE Lamps — Acetylenlampen — Lampes d gaz Acetylene Cremer Lamp and Engineering Co. Ld., Leeds 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 I’analyse de fair Siebe, Gorman and Co. Ld., Westminster, S.E. Air Compressors — Luftkompressoren — com- primeurs d’air Beiliss and Morcom Ld., Birmingham. 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.,