326 __________________________________________________________________________________________________________ CONTENTS. Editorial Articles :— PAGE Robbing the Pits____................................. 327 Scientific and Industrial Research ............... 328 Articles :— A New Battery Signalling Bell............................. The Microscopical Examination of Coal ......... Coal Mining Organisation Committee............ ............................. New Flameproof and Watertight Magneto Mining Telephone .................................. Retail Coal Prices ............................ The German and Austrian Coal and Iron Trades ... Trade and the War............................. Book Notices.................................. Mining and Other Notes......................'.. Labour and Wages............................. Obituary...................................... Exports of Coal, Coke, and Manufactured Fuel from the United Kingdom ..........<................... Open Contracts........................................................ The Freight Market ........................... Coal and Coke Exported and Shipped Coastwise from Ports in England, Scotland and Wales ... .................................... Abstracts of Patent Specifications Recently Accepted...................................... New Patents Connected with the Coal and Iron Trades ...................................... Government Publications ................__:_____ Publications Received __.................________ 320 321 321 324 325 333 333 334 335 338 339 339 339 340 342 342 342 Current Science and Technology___........... 324 Law Intelligence ............................ 333 Notes from the Coalfields .................... 335 Coal, Iron and Engineering Companies ........ 337 The Coal and Iron Trades ............ 325, 328—332 The Tin-plate Trade ........................... 325 The London Coal Trade ....................... 332 The By-Products Trade ....................... 332 Reports of Meetings :— Mining Institute of Scotland................... 318 North of England Institute of Mining and Mechanical Engineers ....................... 323 Miscellanea :— Partnerships Dissolved—Hull Coal Exports ..... 318 Immingham Coal Exports—Hull Coal Imports— The Coal Trade of Holland............................ 319 United States Imports and Exports of Coal ..... 321 Coal Supplies and Prices................................. 322 Grimsby Coal Exports ................:______ 328 Exports and Imports of Coal Tar Products...... 335 Shipments of Bunker Coals—Imports of Pit Props in July — Exports and Imports of Mining Machinery __............................... 337 _______________________________________________ ADVERTISEMENTS. Offices for ADVERTISEMENTS and PUBLICATION- 30 & 31, Furnival Street, Holborn, London, E.C. Telegraphic Address—“Colliery Guardian, Fleet, London.” Telephone—1354 Holborn. CONTRACT ADVERTISEMENTS : Prices for SPECIAL POSITIONS on application. Prices for ORDINARY POSITIONS Single Column (3 inches wide) : For 52 insertions 2s. 6d. } per insertion for each „ 13 „ 3s. 6d. ) inch m depth. Double Column (6 inches wide), double the above rates. Three Columns (9 inches wide), three times the above rates. ________ MISCELLANEOUS ADVERTISEMENTS : Advertisements are inserted on the last white page or leader page at the following rates :—z One insertion ... 10s. 6d. per inch per insertion. Three insertions 9s. 6d. ,, „ Six insertions ... 9s. Od. ,, „ A reduction of 2,5 per cent, is allowed on advertisements of second-hand machinery. Situations Vacant and Wanted : One Penny per word, minimum 2s. 6d. (which must be prepaid). Can be received up to TEN o’clock on Friday morning. (A Classified List appears on page 344.) _______________________________________________________ Established 1866. Patents, Designs and Trade Marks. Harris and Mills, Chartered Patent Agents, 34 and 35, HIGH HOLBORN, LONDON, W.C. Telegraphic Address—“ Privilege, London.” Tel. No.—Holborn 2763. Booklet of useful information gratis. Chart of 187 Mechanical Motions with description of each, post free. 6d. ___________________________________________________ YV7anted, a Gentleman with Colliery V V experience as joint Commercial Manager of a good colliery, Yorks ; £2,500 required, which could be satisfied as to £1,000 down and balance spread over a period; a practical man will readily realise excellent opportunities on investigation.—Box 6138, Colliery Guardian Office, 30 & 31, Furnival-street, Holborn, London, E.C. Agency in Prance.—Representative, in Cote d’Or, in touch with industrial works capable of consuming 100.000 tons, desires Agency for sale of British Coal in France.—Satisfactory references and full particulars, Box 6140, Colliery Guardian Office, 30 St 31, Furnival-street, Holborn, London. E.C. Tpngineer or Foreman with a thorough 1 knowledge of electrical machinery and all kinds of colliery plant, requires situation.—Box 6125, Colliery Guardian Office, 30 A 31. Furnival- street, Holborn, London. E.C. (Colliery Manager requires Situation as MANAGER or ASSISTANT; present position 8 years; practical experience thick and thin seams; moderate and high inclinations, handling and dealing withmen—Apply, Box 6134, Ct ll e. i Guardian Office, 30 A 31, Furnival street, Holborn, London, E.C. THE COLLIERY GUARDIAN. The Oldest Diamond Drill Company. Established 1872. BORING foe SPEED AND CERTAINTY. CYLINDRICAL “ CORES.” THE AQUEOUS WORKS AND DIAMOND ROCK-BORING Co. Ltd. Guildford St., York Road, Lambeth, London, S.E. Besides numerous other Important Contracts, completed (in 1-897) the Deepest Boring in the United Kingdom to 3,500 ft. Great Experience in Boring for WATER. __________________________________________________________ The Cambrian School of Mines, CEMETERY ROAD. FORTH, GLAM. An University Training at Your Own Home. Lessons and Instruction by Post for candidates for FIRST and SECOND Class Mine Managers’ and Mine Surveyors’ Home Office Examinations; Surveying and Electrical Engineering for London City Guild’s Examina- tions ; also A.M.E.E. Examinations and Government Inspectors’ Exams. Candidates for the above write without delay for free Syllabus, and book of Previous Examination Questions. (Dept. G.) CAMBRIAN MINING SCHOOL, PORTH, Glam. _________________________________________________ Briquette Machinery Ltd., Charmouth Street, LEEDS. Machinery for Briquetting Peat, Lignite, Coke, Coal, Iron, Copper, Nickel, Cement; Also Sawdust, Waste Cereals, Offals, Sewage. PATENT COAL DRIER. ________________________________________ The UNIVERSAL MINING SCHOOL (Estab. 1883) is conducted by T. A. SOUTHERN (late H.M.I.M.) and H. W. HALBAUM (Greenwell Medallist), men qualified to prepare you for the highest mining positions. U.M.S men obtain and hold nearly all the best posts. For example, 50 of H.M. Inspectors are U.M.S. men. Lessons by post only. Fees postponable during the war. Particulars on application. Syllabus and advice free. THE U.M.S., 50, Connaught Rd., CARDIFF. YEADONS’ LATEST PATENTED BRIQUETTE MACHINERY, For Coal, Coke, Iron and other Ores. __________ YEADON, SON & CO., Engineers, LEEDS, Have a World-wide Reputation, and 38 Years’ Experience. They have supplied MORE BRIQUETTE PLANTS than any other firm in this country. STEEL Rails Roof Rars Pit Props Arches For COLLIERIES V and WORKS. THOS W. WARD Ltd., Albion Works, SHEFFIELD. TRY US, ------- Position desired as Assistant Colliery MANAGER or other suitable position ; had experience as surveyor, deputy, under-manager; first-class certificate and good testimonials.—Box 6141, Colliery Guardian Office, 30 & 31, Furnival st., Holborn, London,E C. \ anted to purchase, substantial York- V v shire COLLIERY now showing reasonable margin of profit; principals only ; genuine.—Box 6137, Colliery Guardian Office, 30&31, Furnival-street, Holborn, London, E.C. BATH HOUSES. For Sale from stock, Copper Calorifier, 400 gallons capacity, capable of heating 1,400 gallons per hour with 30 lb. steam pressure; suitable for large bath house.—Apply, DABGUE, GRIFFITHS fc CO. LTD., Heating Engineers, Vauxhall-road, Liverpool. 1X7anted, Single Pulley Steel Headgear, V V about 30 ft. high, suitable for erection over 14 ft. diameter shaft, and to sustain a dead load of 7 tons and live load of 2J tons.—State orice delivered to PBNSFOBD a BROMLEY COLLIERIES, near Bristol. Locomotives, 4 - wheel coupled, by Manning Wardle, 8 in. cylinders ; splendid condition, ready for service— MUIRHEAD & OO. LTD, Imperial-road, Fulham, 8.W. Partnerships or directorships required by the following investors, viz.: August 13, 1915. Geo. N. Dixon & Co., 43, Castle Street, Liverpool, Auctioneers and Valuers, COLLIERIES, Brickworks & Mining Plant. For Sale, 40-n.h.p. Undertype Robey WINDING ENGINE, pair 14|in. cylinders, 18 in. stroke, Boiler, 1001b. steam, coupled to two drums 7 to. diameter, 18 in. wide, each drum loose on shaft with clutch gear, equal new.—A. UNDERWOOD. 3, Queen- street, E.C. For Sale, 212 ft. of 8 in. Loose Flange PIPING, also 450 ft. of 4 in. SOCKET PIPING.-A. UNDER. WOOD. 3, Queen-street, E.C. For Sale, 30 by 8 Lancashire Boiler, by Musgrave, insured for 160 lb., immediate delivery.—A. UNDER. WOOD, 3, Queen-street, E.C. rphe Directors of the Powell Duffryn J. Steam Coal Co. Ltd. invite TENDERS for the supply of the under- mentioned STORES from the 1st October, 1915. No. 1. Bar and other Iron and Steel. » No. 2. Bolts, Nuts, and Rivets. No. 3. Gunmetal Fittings. No. 6. Indiarubber, Asbestos, &c. No. 7. Colliers’ Tools, &c. No. 9. Ironmongery. No. 10. Steel Girders, Channels, Rails, &c. No. 11. Nails. No. 13. Steel. No. 14. Steam Tubes and Fittings. No. 15. Brattice Cloth, Waste, &c. No. 17. Chains. No. 19. Timber. No. 21. Hay. No. 22. Horse Feed. No. 23. Wire Ropes. No. 24. French Pitwood. No. 24a. Baltic Pitwood. No. 26. Electrical Goods. Forms of tender and full particulars can be obtained on application to the Stores Manager, Aberaman Offices, near Aberdare. Tenders to be addressed to the Directors of the Powell Duffryn Steam Coal Co. Ltd., 101, Leaden hall- street, London, E.C . and to be posted so as to be received not later than 10 a m. Wednesday, September 8th, 1915. 101, Leadenhall street, By order, London, E.C. H. R. CLARKE, Secretary. ARMY CONTRACTS. COAL AND COKE. Qealed Tenders for the above supplies for Military Services at stations in the undermentioned Commands for the period ending 30th June, 1916, will be received shortly by the Officers Commanding the Army Service Corps in the undermentioned Commands or districts. Aidershot Command Dover Garrison Colchester district... ... Chatham district Aidershot. Eastern Command ... Dover. Colchester. Chatham. Woolwich district Shorncliffe district Harwich district Brighton district Woolwich. Shorncliffe. Harwich. Brighton. Irish Command Curragh district Queenstown district Belfast district Dublin district Fermoy district Lough Swilly Defences... Athlone district Bere Island. Curragh. Queenstown. Belfast. Dublin. Fermoy. , Buncrana. Athlone. London district____________________________ Horse Guards, Whitehall, Northern Command ____________________.. York. [S.W Scottish Command_________________________ Edinburgh. Southern Command Salisbury Plain district Bulford. Portsmouth district ... Portsmouth. Devonport district_____ Devonport. Southampton district ... Southampton. Wylye Valley district ... Warminster. Fovant district__________Fovant. Larkhill district _____ Larkhill. Western Command_______________ ... _____ Chester. Guernsey and Alderney district __________ ... Guernsey. Jersey district____________________________ Jersey. Form of tender, conditions of contract, date for receipt of tenders, and any further information may be obtained on application at the above-named Head Quarter offices, by letter addressed to the OFFICER COMMAND- ING ARMY SERVICE CORPS, or in person between the hours of ten and four o’clock. War Office, S.W., August, 1915. ____________________________________________________________ THE LIVERPOOL GAS COMPANY. TENDERS FOR COAL AND CANNEL. ‘ rPhe Directors of the Liverpool Gas JL Company are prepared to receive TENDERS for the supply of 80.000 tons of COAL and 20,000 tons of CANNEL, to be delivered at the various works of the company during the period of nine months between the 1st October, 1915, and the 30th June, 1916. Tenders a ill be received for the whole or any portion of the above quantity. The Directors reserve the right to accept tenders for the whole or any portion of the quantity offered, and do not bind themselves to accept the lowest or any tender. Full particulars and printed forms of tender can be obtained on application to the undersigned at the Gas Office, Duke street, Liverpool. Sealed tenders (on the printed form only) addressed to the Chairman of the Company, must be delivered at or before 10 a.m. on Wednesday, September 1st, 1915, endorsed “ Tender for Coal.” Gas Office, Duke-street. By order, Liverpool, R. E. GIBSON, 12th August, 1915. Engineer. J. W. BAIRD AND COMPANY, PITWOOD IMPORTERS, WEST HARTLEPOOL, YEARLY CONTRACTS ENTERED INTO WITH COLLIERIES. OSBECK & COMPANY LIMITED, ' PIT-TIMBER MERCHANTS, NEWCASTLE-ON-TYNE. SUPPLY ALL KINDS OF COLLIERY TIMBER. Telegrams—“ Osbecks, Newcastle-on-Tyne.” ______________________________________ For other Miscellaneous Advertisements see Last White Page. _________________________________________________________ ASSOCIATION OF PRIVATE OWNERS OF RAILWAY ROLLING STOCK. Formed in 1891 for the Protection of the Rights and Interests of Private Owners. Applications for particulars and terms of membership may be sent to the SECRETARY, Clarence Chambers. Gloucester. available.! "xperienoe. .£5,000 Merchants ... <£5,000 Motors ..... .£5,000 Brewery ... <£3,000 Chemicals ... <£3,000 : Textile_____ <£3,000 Commercial... <£2,500 Manufacturing <£1,500 i Soft Goods ... .£1,000 i Ironmongery .£1,000 | Accountancy Business Required. Directorship in sound Manufg. Co. Engineering or Manufacturing. Coal. Chemicals or Allied. Manchester Heavy Goods preferred. Directorship, Devon preferred. Manufg. has export connections. Coal. Wholesale Hardware. Manufg., Wholesale, or Agency. i? Iw Italian AND Journal ot the Coal and Iron Trades. Joint Editors— J. V. ELSDEN, D.Sc. (Lond.), F.G.S. HUBERT GREENWELL, F.S.S., Assoc.M.I.M.E. LONDON, FRIDAY, AUGUST 13, 1915. Owners of established sound businesses requiring capital should call upon or communicate confidentially with Messrs. COOKE & BYRNE, 60, Harcourt St., Dublin. The London coal trade continues very irregular and disjointed. Colliery prices are all more or less withdrawn, and merchants are content to deal only with contract supplies. Public orders and back orders on the colliery books are rapidly thinning. Very little new business is transacted. House and steam coal prices are fairly firm, but a drop in current