Mat 1, 1914. THE COLLIERY GUARDIAN. 987 --- THE Koppers’ Coke Oven has been proved to be the most successful on the market, as is evidenced by the fact that in the comparatively short period of ten years orders for over 11,000 Ovens have been placed with us, of which number over 4,500 are repeat orders. These orders represent a capital cost of over £8,500,000. --- SIMILAR SUCCESS ATTENDS THE INTRODUCTION OF ----- HOPPERS’ NEW SYSTEM OF BYE-PRODUCT RECOVERY. In the New System the Scrubbing process is entirely dispensed with, and the Ammonia is recovered direct from the Gas in the form of Sulphate. ADVANTAGES OF NEW SYSTEM Effluent Liquor reduced by 50 per cent, and upwards. Great Saving in Steam Consumption. Greater Yield of Sulphate and Benzol. Consumption of Water Is considerably Reduced. Less Labour Cost. Plant Is Simpler to Operate, and requires less Supervision. Plants already at work and under construction to deal with the Gases evolved from upwards of 25,000,000 tons of coal per annum. Full Particulars on Application to— THE KOPPERS’ COKE OVEN AND BYE-PRODUCT CO., Telephone Nos. 1935 & 1331 (two lines). 301. Glossop Road, ■ ‘ KOCHSPlSHEPFIELD." COLLIERY OWNERS MANUFACTURING BRICKS SHOULD SUBSCRIBE TO THE BRITISH CLAY-WORKER The Organ of the Brick and Tile Trades. PubJtf/ied Monthly. Subscription: 8s. per annum, post free. Send for Specimen Copy to the Publisher, THE BRITISH CLAY-WORKER, 43, ESSEX-ST., LONDON, W C. By Appoint- to H.M. tnent The Kin,, FIRE ENGINE MAKERS. G. H. MEYER & Go. Yt/FAPS of the British Coalfields. 1. Scotland. 2. North of England. 3. South Wales. 4. North Midlands. 5. South Midlands. Sheet, 4s. each; Mounted on Cloth on Rollers, or in Case. 6s. each.—THE COLLIERY GUARDIAN CO. LTD. 30 & 31 Furnival-street, Holborn, London, E.C. Write for Illus- trated Price List. Specialities: LATHES &. SAW BENCHES. First class at competitive prices ROWLAND C. FOOT & Go. 11, Queen Victoria St.. London, E.G THE World Year Book For 1914. TWENTY-EIGHTH YEARLY EDITION, CONTAINING 1,900 PACES. Edited by MAJOR BVAN R. JONHS. PORT DIRECTORY OF THE WORLD. This section occupies 600 pages of the Year Book, and gives particulars of Every Port and Harbour in the British Isles, verified by the Authorities—Pilotage, L’owaae, Officials, Charges. &c. The Foreign Ports are specially revised by the British Consuls and the respective Port Officials. FOREIGN AND COLONIAL TARIFFS. The Foreign and Colonial Tariffs, occupying about 1,000 pages, are corrected up to the latest possible date; and Exporters and Importers may obtain from this section, in a few minutes, information which would otherwise necessitate extensive correspondence with Consulates and Government Offices. DIGEST OF SHIPPING ACTS. The Digest of British Shipping Acts, from 1894 to 1913, forms a valuable feature of the book, especially to Shipowners, and includes the new Pilotage Act of 1913 and the National Insurance Act, as it affects Shipowners, Seamen and Firemen, and Shipyard Workers. MAP OF THE WORLD. The Shipping World Year Book Map of the World, specially designed by J. G Bartholomew. Esq., F.R.G.S., F.R S.E., and con- tained in a pocket in the cover, shows the Routes of Steamers and Railways, important Ports and Coaling Stations, and also has many Inset Maps of ports, harbours, waterways, &c., including a new one of the Panama Canal and the Canal Zone. SOME OF THE OTHER CONTENTS OF THE YEAR BOOK. Board of Trade Regulations (latest)—Chambers of Commerce and Shipping—Coaling Stations—Collision Regulations (International- Customs Boarding Stations—Discharge and Engagement of Crews— Documents required for Clearing Vessels—Dock, Wharf and Quay Loading Regulations—Fastest Merchant Ships—Great Britain’s Trade with the World—Life Boats and Life-saving Appliances—Lloyd’s Signal Stations—Load-Line Tables—Masters’ and Mates’ Certificates —Seamen’s Wages and Certificates—Shipping Subsidies—Sight Tests (latest regulations)—Suez Canal and its Regulations—Submarine Bells—World’s Output of Tonnage (1913). Crown 8vo Cloth. Price Post Free: United Kingdom, io/= net; Foreign Countlies, n/= “SHIPPING WORLD” Offices, Effingham House, Arundel Street, Strand, London, W.C. MERRIWEATHERS' Largest Makers of High-class HOSE PIPES in the World. for Fire Duty. ABC Code used. Write for Catalogue. WIRE ROPES OF EVERY DESCRIPTION Dub-Sub Canvas 1 Admiralty Leather for Flushing. Armoured Rubber for Mines. Write for “ Hints on Hose,” and quotations. MERRYWEATHER & SONS, Fire Engine and Hose Works, GREENWICH, LONDON, S.E. JUNCTION BOXES 05 For underground use. Strong, substantial Cast Iron Boxes with best Brass Fittings, at very moderate cost. Write for further particulars to— J. Crawford & Sons Ltd., Bonner’s Field Engine Works, SUNDERLAND. 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 bjkthe South Wales Institute of Engineers. It consists of 81 pages of printea matter with Sections and Diagrams. The large drawing? 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 - SA) Neath Valley. (E) Ammanford. B) Swansea Valley. (F) Loughor Valley. C) Brynamman District. (G) Gwendraeth District. (D) Amman Valley. (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 Is., Postage Extra. “The South Wales Coalfield,” Part I., by Mr. H. K. Jordan, published tn 1908, price £2.2s., dealt with the eastern half of the Coalfield, and may bf obtained from the Secretary. PROMPT DELIVERY IN BEST QUALITY. C. H MEYER & Co. Engineers, i, METAL EXCHANGE BUILDINGS, WHITTINGTON AVENUE, LONDON, E.C. THE STANDARD WORK ON Mechanical Engineering of Collieries. By T. C. FUTERS, M.Inst.M.E. (1938 illustrations). Vol. I., Price 21s. net. Vol. II., Price 10s. 6d. net. Supplementary Volume, Price 10s. 6d. net. THE COLLIERY GUARDIAN CO. LTD., 30 & 31, Furnival-street, Holborn, London, E.C.