462 THE COLLIERY GUARDIAN March 2, 1917. EDWIN LEWIS & SONS. Original Makers of “Acme” & “Williams” Loose Flanged Joints for Mining Work. TUBES OF ANY SIZE For Compressed Air, Water, or Steam. Telegrams—** Lewis, Wolverhampton.” Telephone—Nos. 15 6 180 Wolverhampton. P'aW n- [latent Iron Tube Works, Monmore Green. 1 Britannia Tube Works, Ettingshall. WOLVERHAMPTON. Buyers will note that the joint illustrated is an improvement on the “Williams” joint, as it does without the internal ferrule. LONDON ADDRESS-143, Cannon Street, E.C. LIVERPOOL WAREHOUSE-58, South John St. FOR SALE OR HIRE Hire terms fur- nished on appli- cation. NAYLOR’S APPROVED BIFOLD MARSAUT LAMP. Gives the best light, is the best Gas Detector, and the Safest Flame Lamp procurable. NEW MINES ACT. Approved Miners’ Lamps TO MEET ALL REQUIREMENTS OF THE ACT. Arranged for Electric Ignition and with mag- netic Lock. Particulars furnished on application. Demonstrations arranged by appointment. J. H. NAYLOR, Central Brass Works, Established 1861. WIGAN, For safety first shaftmen The HOLDEMRITE (figs. 366-8) gives a Shaftman real security to do his thorough inspection and repair work, and gives him his life if that is in danger. He’s Safety First, Second and Third. HOLDEMRITES are frte for inspection and test From A. HANLEY, 21, Alpha Road, Bristol. AIH ni DCO JOHN baker & son, 21 I K 9 W n XK IRON AND STEEL WORKERS, mil I II IhU Thompson St., BILSTON TUB CORNER PLATES BUCKETS and BASKETS NEWTON, CHAMBERS * & Co. Ltd., THORNCLIFFE IRONWORKS, NEAR SHEFFIELD. ESTABLISHED 1793. TANKS in Cast Iron or Steel. GENERAL CASTINGS, CONSTRUCTIONAL STEELWORK. CONTRACTORS to the ADMIRALTY, WAR OFFICE, and CROWN AGENTS for the COLONIES. Telegrams-“ NEWTON, SHEFFIELD.” Telephone No. 2200 Two Lines. PITWOOD, COGWOOD, SLEEPERS, Round English Timber, or cut to any size, all kinds. Also Pitch Pine and Oregon Logs, and Half Logs, second-hand (nearly as good as new), 4 ft. to 30 ft. long. Short from 3s. per cube, long from 3s. 6d. per cube. Also other new and second-hand Timber, Boards, &c., at Bristol, Swansea, Porthcawl, Hull, and Leicester. Prices, carriage paid, on application for any kind timber or manufactured woodwork. JENNINGS & CO. Ud.., Timber Merchants, General Woodworkers, 825, Pennywell-rd., Bristol, & other branches U.K. Cloth, Price is. 8d. post free. SUGGESTED RULES for FOR RECOVERING COAL MINES AFTER EXPLOSIONS AND FIRES. By W. E. GARFORTH. THE COLLIERY GUARDIAN CO. LTD.. 30 & 31, Furnival Street, Holborn, London. E.C. “THE SOUTH WALES COAL-FIELD.”—PART III. By HENRY K. JORDAN, F.G S (Past Presidentand First Gold Medallist of the South Wales Institute of Engineers'. THIS Paper completes the author’s monograph on the South Wales Coal-Field, and is published by the South Wales Institute of Enginers. It comprises 89 pages of printed matter, with a number of Sections inter- leaved, and the following large drawings which are issued separately:— 1. A Horizontal Section across the Carmarthenshire Coal-Field, from Pontyberem to the Sea near Llanelly. The Section is fiv-4 feet in length mounted on linen, and geologically coloured. 2. JL Map on the Six-inch Scale of the Anthracite Area of Llan- non, Mynydd-Sylen, and Pontyberem. It also illustrates the Outcrops of the Seams, F'-ults, &c. Three Sheets of Vertical Sections of the Deep and Important New Collieries that have been Sunk throughout the Coal- Field during the Past Six Years. The sections are drawn to a scale of 100 ft to 1 in., and the sheets are 40x27 in., mounted on linen. The first portion of the text deals with the anthracite area and with the Pennant seams to the north and west of Llanelly and Burry Port. The remaining portion discusses the new collieries in Glamorganshire and Monmouthshire, with much additional information which brings the subject up to date. A limited number of the above are for sale, price £2 2s. (postage extra), and may be obtained from THE SECRETARY, The South Wales Institute of Engineers, Cardiff. “The South Wales Coal-Field.’’ Part I., by Mr. H. K. Jordan, price £2 2s., dealing with rhe eastern half of the Coal Field; and “The South Wales Coal-Field ” Part II.. by Mr. H. K. Jordan, price £1 Is., dealing with the western half of the Coal-Field, may be obtained from the Secretary. LEEDS. GOODALL, CLAYTON & Co. Lo. Telegrams :— “ Vertical, Leeds.” Telephone:—1982, Leeds Electric Signalling wm. Bare Wires DAVIS’S SPECIAL BELLS. TREMULOUS OR SINGLE STROKE. Patent. With these BELLS there is NO POSSIBILITY of a SPARK. Suitable for A.C. or D.C. Davis’s Relays with SPECIAL WINDING, overcoming sparking on the line and in the Relay. Davis=Fryar Mechano=Electric Signalling. Patent. MAKERS AND ERECTORS OF SCREENING PLANTS, PICKING BELTS, SCREENS, PITHEAD GEARS. BUNKERS, ROOFS, STEEL STRUCTURAL WORK, &c. GAS RETORT INSTALLATIONS, CONVEYING PLANTS. RepresentativesH. L. CHESTON, Clarendon House, Boston Spa, Yorks. W. OGDEN DAYSON, 1, Mount Street, Swansea, for South Wal«®, o © The Davis-Fryar System dispenses entirely with bare wires and is in successful operation throughout the country. SEND FOR LIST 41/H.O.S. JOHN DAVIS & SON (DERBY) LTD, ALL SAINTS WORKS, DERBY, & w’estmVnster^s^w.