908 THE COLLIERY GUARDIAN. November 1, li'13. STRONG’S PATENT MINE SIGNALLING APPARATUS. NON-CUMULATIVE, AUDIBLE, VISIBLE, and ILLUMINATED SIGNAL. Entirely fulfils the requirements of the Coal Mines Regulation Act. Simple in action, absolutely reliable and fool-proof. Registers “ Men ’ and “ Right-away ” Signals on one Dial. THE BEST INDICATOR ON THE MARKET. Write for Circular giving full particulars, to THE CLAY CROSS GO. LTD., Near CHESTERFIELD.) FERRO-CONCRETE LINING , ■ YEARS of STUDY and EXPERIENCE HAVE DROUGHT MY SYSTEM OF CEMENTATION TO PERFECTION. TO COLLIERY PROPRIETORS Shafts sunk, tunnels driven, and other mining constructions carried out in difficult and very wet ground by the best method. Success guar- anteed. 19 shafts in Great Britain sunk with cementation. Ferro-Concrete Lining a speciality. Feeders of water in shafts or levels effectually treated. COAL MINES EXCESS PAYMENTS. GUARANTEE PAYMENTS AND LEVIES FOR CLOSED MINES. By W. E. SNELLING, Of the Inland Revenue Department. The author is well known for his lucid expositions of the law and practice relating to Excess Profits Duty and Income Tax, and the subject of the present book is dealt with in the same thorough and masterful manner that characterises his former efforts. A special feature of the work is the large number of practical examples showing the application of the various provisions of the agreement. In demy 8vo, cloth, 176 pp., 12/6 net. OTHER USEFUL BOOKS. INDUSTRIAL TRAFFIC MANAGEMENT. By GEO. B. LISSENDEN. With a Foreword by CHARLES E. MUSGRAVE, Secretary, London Chamber of Commerce. This is a thoroughly practical guide, and deals fully and comprehensively with the subject in all its many branches. In demy 8vo, cloth gilt, 260 pp., 7/6 net. COLLIERY OFFICE ORGANISATION AND ACCOUNTS. By J. W. INNES, F.C.A., and T. COLIN CAMPBELL, F.C.I. Describes fully the lines upen which the organisation of work in a colliery office should be laid down. Part I.—Channels through which sales are effected. Part II.—Costs. Part III.—Trading Account and Balance Sheet. In demy 8vo, cloth gilt, 140 pp., 5/- net. COAL. Its Origin, Method of Working, and Preparation for the Market. By FRANCIS H. WILSON, M.Inst.M E. In crown 8vo, cloth, 2/6 net. MODERN PRACTICE OF COALMINING. By D. BURNS, Certified Colliery Manager. Part I.—Geology—Boring. 5/« net. Part II.—Explosives and Blasting. 51= net. Part III.—Sinking and Fitting Shafts. 5/= net. Part IV.—Drills and Drilling—Coal Cutting. 5/= net. ALBERT FRANCOIS, Telegrams—“ Francois, Doncaster," DONCASTER. Telephone—4 08 Doncaster. OF ALL BOOKSELLERS, OR FROM SIR ISAAC PITMAN & SONS Ltd., 1, AMEN CORNER, LONDON, E.C.4. Partners: Albert J. Franijoia (Belgian); Thomas Blandford. Telephone: No. 4800 (5 Lines). Telegrams : “ MOTOR.” DAVY BROS. LTD., SHEFFIELD. 5gg^ Highest Glass Lancashire Boilers FLAT OR DISHED ENDS. Any Size or Pressure. BLAKE'VERTICAL MULTITUBULAR BUILERS, THE BEST WASTE-HEAT BOILER ON THE MARKET. HIGH-SPEED Steam-Hydraulic, Forging, Bending, Shingling, Shell and Drawing PRESSES.