Aug st 28, 1914. THE COLLIERY GUARDIAN 483 XXIII.—Coke Ovens. Coking Processes for Western Canada. T. B. Williams. “ Bull. Canad. Min. Inst.,” August, p. 59; 9 fig. Coke Oven By-Products in 1913. • “ Colliery Guard.,” August 21, p. 415. (Report under Alkali Works Act.) An Analytical Study of the Principal Systems of Coke Ovens. Ch. Berthelot. “ Colliery Guard.,” August 14, p. 363. Mechanical Charging Cars for Coke Ovens. A. Thau. “ Colliery Guard.,” July 10, p. 77; July 17, p. 138; July 24, p. 209; July 31, p. 252; 23 figs. A New Direct Ammonia Recovery Process at Beighton Colliery. “ Iron Coal Tr. Rev.,” August 21, p. 262; 4 fig. Sal Ammoniac : A New By-Product of Cokeries, Gas Works, etc. (Chlorammonium (Salmiak) : Ein neues Nebenproduckt der Kokereien, Gaswerke, usw.). W. Strommenger. “ Bergbau,” vol. 27, No. 30, pp. 543-45. XXIY.—Fuels, Testing, etc. Surface Combustion. W. A. Bone. I. : Historical and Scientific Aspects. “ Journ. Roy. Soc. Arts.,” July 31, p. 787; 4 fig. Surface Combustion : II. W. A. Bone. “ Journ. Roy. Soc. Arts,” August 7, p. 802; 9 fig. Surface Combustion : III. W. A. Bone. “ Journ. Roy. Soc. Arts,” August 14, p. 818; 19 fig. (in all). Producer Gas from Low-Grade Fuels. R. H. Fernaid. “ Journ. Franklin Inst.,” August, p. 161; 20 fig. Determining the Value of Coal (Ueber die Wertbestim- mung der Kohlen). E. Kuppers. “ Bergbau,” vol. 27, No. 30, pp. 545-46. Combustion of Coal and Anthracite, and the Utilisation of their Heat in Steam Raising (Verbrennung von Steinkohlen und Anthrazit und Verwertung ihrer Warme im Kesselhause). Prof. Kirsch. “ Feuer - ungstechnik,” vol. 2, No. 19, pp. 325-29. XXV.—Steam Engines and Boilers. Costs and Various Applications of Piping at Coal Mines. W. B. Richards. “ Coal Age,” August 1, p. 177; 6 fig. Feed Water and Its Treatment. W. Barrowman. “ Iron Coal Tr. Rev.,” July 31, p. 180; 6 fig. (Paper read before Scottish Fed. Inst. Min. Stud.) Preventable Losses in Factory Power Plants. VII. : The Heating System. D. M. Myers. “ Eng. Mag.,” August. Plant of the Bessemer Coal and Coke Company. J. G. Bart. “ Coal Age,” August 1, p. 172; 4 fig. (Improved boiler construction.) Waste Heat v. Coal Under Boilers. J. C. Edwards. “ Coll. Engin.,” August, p. 16; 2 fig. The Conduct of Boiler and Steam Engine Trials. “ Engineering,” Aug. 14, p. 227; 2 fig. (Report of Inst. Civ. Engin.) Colliery Consumption and Machine Economy at an Upper Silesian Colliery. K. Schultze. “ Trans. Inst. Min Engin.,” vol. 47, 4, p. 576; 7 fig. ” Colliery Guard.,” July 24, p. 198; July 31, p. 265. XXVI.—Compressed Air. Three - Stage Air Compressor Electrically Driven. “ Engineering,” July 31, p. 165; 6 fig. (Compressor made by Peter Brotherhood Limited.) Air Receiver Fires and Explosions. F. Richards. “ Coll. Engin.,” August, p. 25. Pneumatic Rotary Drills and Compressed Air Fans (Pressluft-Drehbohrmaschinen und Pressluft-Ventila- toren). —. Muhle. “ Bergbau,” vol. 27, No. 29, pp. 527-28; No. 30, pp. 546-48; 6 illus. XXVII.—Electricity. Electric Signalling and the Senghenydd Disaster. “ El. Rev.,” July 31, p. 191. Electricity in Coal Mining. D. R. Shearer. “ Coal Age,” July 18, p. 105; 2 fig. (Coal cutters.) Electricity in American Metal Mining. II. : Miscel- laneous Application Underground and Relations to Safety. L. O. Kellogg. “ Eng. Mag.,” August, p. 704; 11 fig. Switchgear for Mines. E. K. Scott. “ Trans. Inst. Min. Engin.,” vol. 47, 4, p. 551; 22 fig. The Limiting Conditions for the Safe Use of Electricity in Coal Mining. W. M. Thornton. “ Colliery Guard.,” August 21, p. 413. (Paper read before Brit. Assoc.) ' XXVIII.—Surface Transport. Modern Coal Boat Unloading. J. F. Springer. “ Coll. -Engin.,” August, p. 1; 8 fig. (Apparatus in use on the Great Lakes for handling coal from vessels’ holds to cars or stock piles.) Railway Wagon Tippler for Goods in Bulk (Eisenbahn- wagenkipper fur Nassengubentladung). H. Her- manns. “ Fordertechnik,” vol. 7, No. 14, pp. 176-78; 5 illus. XXIX. —Sanitation, Diseases, etc. A Text-Book on Trade Waste Waters, their Nature, and Disposal. H. M. Wilson and H. T. Calvert. Griffin; 18s. XXX. —Mining Laws, Royalties. Lindley on Mines : A Treatise on the American Law Relating to Mines and Mineral Lands. C. H. Lindley; 3 vols.; 2811pp.; San. Francisco; 5 guineas. Abstracts of Current Decisions on Mines and Mining. March-December 1913. J. W. Thompson. ‘‘ U.S. Bur. Mines Bull. 79,” 140 pp. The Rise and Progress of Factory Legislation. Sir T. Oliver. “ Journ. State Med.,” August, p. 472. (Lecture before Roy. Inst. Publ. Health.) A Review of Mining Legislation. A. D. Mittom “ Trans. Inst. Min. Engin.,” vol. 47, 4, p. 518. CONTRACTS OPEN FOR COAL AND COKE. For Contracts Advertised in this issue received too late for inclusion in this column, see Leader and Last White pages. Birmingham, September 7.—Tenders are invited for the supply of 173,000 tons of coal to the Generating Stations of the Corporation Electric Supply Department, for delivery between November 1, 1914, and October 31, 1915. Par- ticulars as to delivery and requirements can be obtained from the undersigned. Tenders must be sent in by noon of Monday, September 7, 1914. R. A. Chattock, M.I.E.E., city electrical engineer and manager, 14, Dale End, Bir- mingham. Abstracts of Contracts Open. Abbeyleix (Ireland), September 1. — Ten tons of best Orrell or Whitehaven coal for the Guardians. Tenders to the Clerk of the Union. Abergavenny, September 1.—Coal for the Rural District Council. Particulars from district surveyor, A. J. Willcox, Wyndham-road, Abergavenny. Batley, August 31.—500 tons of pea nuts or beans, and 1,500 tons of best slack for the Corporation. Forms from S. D. Jones, electrical engineer. Birmingham, August 31.—Coal and slack for Birming- ham Municipal Technical School. Forms from J. Mellor, secretary, Suffolk-street. Bradford, August 31.—Best gas coal, cobbles, nuts, and cannel for the Corporation. Forms from Mr. Chas. Wood, Town Hall. Bradford, August 31.—House coal for the Corporation. Forms from F. Stevens, Town Hall. Brechin, September 1.—Coal and coke for the Brechin Burgh School Board. Particulars from J. Neish, board officer. Bury St. Edmunds, September 1.—Approximately 65 tons best cobbles and 35 tons coke for West Suffolk County Council; delivery at Shire Hall, Police Station, and County Sanatorium. Tenders to A. T. Cobbold, clerk, Shire Hall. From i Total cargo. Total bunker. 1913. 1914. 1913. 1914. Tons. Tons. Tons. Tons. Bristol Channel ports 346,617 342,015 28,751 27,242 North-western ports 295,663 278,394 71,388 74,018 North-eastern ports 609,939 623,240 21,779 30,492 Humber ports 206,653 233,097 13,587 10,356 Other ports on east coast 6,741 11,664 8,209 9,238 Other English ports 2,700 3,584 5,944 8,475 Total from England and Wales I 1,468,313 1,491,994 149,658 159,821 Ports on east coast of Scotland | 93,560 107,091 12,458 30,020 Ports on west coast of Scotland 140,352 109,213 44,078 26,894 Total from Scotland 233,912 216,304 56,536 56,914 Irish ports | 10 16 5,703 2,142 Total from United Kingdom 1,702,235 1,708,314 211,897 218,877 Castlebar (Ireland), September 10.—About 40 tons best double screened Wigan coal for Mayo County Council. Tenders to J. T. Kilby, secretary. Coatbridge (Scotland), September 14. — Coals, nuts, peas, and coke for the Old Monkland School Board. Tenders to R. Gray, Municipal Buildings, Coatbridge. Granard (Ireland), August 31.—100 tons best double screened Whitehaven coal, and 30 tons best double screened Irish coal for the Guardians. Tenders to J. Kieran, clerk. Hampton, August 31.—Best double screened coal for the Urban District Council. Forms from S. H. Chambers, surveyor to the Council, Public Offices, Hampton, Middle- sex. Manchester, September 2.—About 2,240 and 2,880 tons of house coal, 800 and 1,500 tons of pea nuts, 2,600 and 4,500 tons burgie for the Guardians. Forms from Poor Law Offices, New Bridge-street. Newport (I.W.), September 10.—Fuel for the Isle of Wight County Council. Full particulars from Mr. J. Dufton, clerk of the Council, Newport (I.W.). Northallerton, August 31. — Coal and coke for the North Riding of Yorkshire County Council (Education Com- mittee). Forms from the Secretary, Education Offices, County Hall, Northallerton. Plymouth, August 31.—About 15 tons of coal and 30 tons of coke for the Plymouth Royal Eye Infirmary. Forms from E. Howard, hon. secretary, 7, Princess-square, Ply- mouth. Portland, September 2.—Between 160 and 200 tons of large Welsh steam coal and 320 to 400 tons of anthracite nuts for the Urban District Council. Forms from R. S. Henshaw, Council Offices, Portland. Port Talbot, September 5.—About 2,000 tons of large, through, and nut gas coal for the Margams Urban District Council. Forms from E. Rees, gas manager. Rawtenstall, September 5.—Coke for the Corporation. Forms from J. Whalley, town clerk, Town Hall. Rochester, September 1.—Coal (inter alia) for Corpora- tion. Specifications, W. Banks, city surveyor, Guildhall. Sculcoates (Hull), September 1.—House coal and coke for the Guardians. Forms at the Union Offices. Sunbury, August 31.—150 tons best Derby bright coals for the Parish Council. Tenders to C. E. Goddard, vestry clerk, Sunbury. Woking, September 19.—Coal and coke for the Educa- tion Committee. Forms from R. B. Roberts, secretary, Education Office, Secondary School and Technical Institute, Woking. The date given is the latest upon which tenders can be received. CONTRACTS OPEN FOR ENGINEERING, IRON AND STEEL WORK, Ac. Abbeyleix (Ireland), September 1. — Well Sinking.— Sinking well and erecting pump for the Guardians. Speci- fication from the Clerk of the Union. Celbridge (Ireland), September 1.—Well Sinking.— Sinking and erecting pump for the No. 1 Rural District Council. Specification from F. Shortt, Council Offices, Celbridge. Dungannon, September 1.—Well Boring.—Artesian well boring for Tyrone County Council. Specification from the Secretary, Court House, Omagh. Middlesbrough, September 12.—Pumping Station Plant. —Three electric motor-driven sewage pumps, priming pumps, and overhead crane for the Corporation. Specification from H. M. Taylor, Snowdon-road, Middlesbrough. Deposit of £2 2s. (returnable) necessary. Morecambe (Lancs).—Cornish Boiler.—Making of a Cor- nish boiler for the Corporation. Specification from H. Clapham, engineer and manager. Newton-le-Willows (Lancs), September 15.—Sinking a shaft and driving about 300 yds. of underground headings at their waterworks for the Newton-in-Makerfield Urban District Council. Specification from R. T. Surtees, Gas Works, Newton-le-Willows. Salford, September 3.—Gas Compressor.—Two sets of steam-driven gas compressors for the Corporation. Par- ticulars from W. W. Woodward, Gas Offices, Bloom-street, Salford. COASTWISE SHIPMENTS IN JULY. As will be seen from below, there was a slight increase in the quantity of coal shipped coastwise during last month as compared with July 1913. The following figures have been taken from the official returns of the Commissioners of H.M. Customs and Excise:— The destination of cargo shipments was as follows:— To ports in 1913‘. Julr 1914' r Tons. Tons. England and Wales...... 1,139,052 ... 1,144,032 Scotland.................... 127,422 ... 159,935 Ireland .................... 435,761 ... 404,347 Shipments to London amounted to 673,662 tons. Partnerships Dissolved.—The London Gazette announces the dissolution of the following partnerships :—John Moores, Albert James Moores, and William Poole Bailey, locomotive boiler makers and repairers, Mill-lane Boiler Works, Bedminster, Bristol, under the style of Moores, Son and Bailey; Aaron Josiah Jackson and Charles Barnard Westley, carrying on business as engineers, at the Kings- wood Engineering Works, Kings wood, in the county of Gloucester, under the style or firm of the Kings wood Engineering Works; A. H. Crisp and F. H. J. Rodwell, motor engineers and supply stores, at Porchester-square-mews, Bayswater, W., under the style of the Bayswater Motor Supply Company; J. Read and A. N. Greg, brass stampers and engineers, at Plume-street, Birmingham, under the style of the Planet Stamping Company; Thomas Threlfall and Frederick Holgate, carrying on business as coal agents at the Old Station, Poulton-le-Fylde, under the style of Threlfall and Holgate, as regards Thomas Threlfall. Winding Signals.—Messrs. John Davis and Son (Derby) Limited send us a copy of the following letter which they have received from the secretary of the Winding and General Enginemen’s and Associated Trades Union Society :—“ I have had opportunity of seeing your non-cumulative indi- cator, also a number of other indicators made by other firms, none of which, of those I have seen at work, are, in my opinion, equal to the one manufactured by your firm. Your indicator may be worked electrically or by the ordinary pull- bell, which indicates accurately, and shows the two separate signals for winding men as required by the Act, such signals always being in full view of the winding engineman until he has complied with the signals given. Your indicator, in my judgment, complies most excellently with all that is required by the section of the Act, and will, I feel sure, be very satisfactory to the winders. Also, there seems to be an absence of complicated mechanism, and, therefore, not liable to require much attention after once being installed. Simplicity, accurate in registering the signals given—clearly showing to the winder the nature of each signal—seem to be strong features of a very excellent and up-to-date indicator.”