May 29, 1914. THE COLLIERY GUARDIAN 1206 Action of Safety Catches in Deep Shafts under Ordinary Conditions of Winding Men (Die Wirkung von Fang- vorrichtungen in den tiefen Schachten unter normalen Verhaltnissen der Seilfahrt). K. J. Czaplinski. “ Oest. Berg-. Hiittenwes,” vol. 62, No. 15, pp. 197- 201; plate. Driving two Jig Conveyors from one Motor (Gleich- zeitiger Antrieb von zwei Rutschen durch einen Motor). —. Gerke. “ Bergbau,” vol. 27, No. 17, pp. 298/9; illus. Depth of Shafts in Ruhr Collieries (Die Schachtteufe ini Ruhrbergbau). E. Jiingst. “ Gliickauf,” vol. 50, No. 20, pp. 805-810; 10 tables. XII. —Signalling. Signalling in Coal Mines : Some New Appliances. “ Colliery Guard.,” May 8, p. 1006; 6 fig. The “ M.P.” Visual Signal. “ Iron Coal Tr. Rev.,” May 8, 1914, p. 718; 2 fig. XIII. —Lighting. Approved Safety Lamps. “ Colliery Guard., April 24, p. 897; May 1, p. 968; May 8, p. 1009; May 15, p. 1069; 29 fig. Approved Safety Lamp Glasses. ‘‘ Colliery Guard.,” May 22, p. 1121. The Hailwood Combustion Tube Oil Lamp. “ Colliery Guard.,” May 1, p. 956; 3 fig. Acetylene Lamps for Metal Mines. F. H. Morley. “ Min. Scient. Press,” April 11, p. 609. The Physiological Characteristics of Acetylene with respect to its Use in Mining. E. E. Smith. ‘ Sch. Mines Quart.,” January, 1914, p. 143. XIV.—Ventilation. The Necessity of Ventilation. M. J. Sturm. “ Journ. Western Soc. Eng.,” March, p. 233. Overcasts and Stoppings in Mines. A. W. Hesse. “ Coal Age,” May 2, p. 718; 2 fig. (Use of terra- cotta building blocks; roofs made of plastered expanded metal lath.) Some Experiences in Reversing the Main Air Currents in Coal Mines and Mechanical Structures Involved. W. Clifford. “ Trans. Inst. Min. Engin.,” vol. 47, 2, p. 312; 10 fig. Ramsey Safety Air Doors for Coal Mines. J. Ashworth. “ Trans. Inst. Min. Engin.,” vol. 47, 2, p. 356; 1 fig. The Regulation of Body Temperature in Extremes of Dry Heat. E. H. Hunt. “ Journ. Hygiene,” vol. 12,' 4, p. 479. Ventilating the Headings in a Yorkshire Colliery. “ Iron Coal Tr. Rev.,” May 15, p. 749; 1 fig. Ventilation and its Effect on the Pay-Roll. Letson Balliet. “ Min. Eng. Wld.,” May 9, p. 881. Measuring Air Velocity in Ventilation Plant <'Das Messen von Luftgeschwindigkeiten in Ventilations- anlagen). O. Ger old. “ Dingier,” vol. 329, No. 18, pp. 278/9; No. 19, pp. 292-296; 21 illus. Coal Mining Operations at Anina and Resicza, with special reference to the Gas Outbursts at the Doman Colliery. (Der Kohlenberbau in Anina and Resicza unter besonderer Berucksichtigung der Gasausbruche auf der Doman-Grube). K. A. Weber. “ Gliickauf,” vol. 50, No. 17, pp. 659-664; No. 18, pp. 700- 705. (Slow working, to leave the coal face exposed as long as possible found to be the best preventive.) XV.—Mine Gases, Testing. The “ Schoeller ” Patent Gas Indicator for Miners’ Lamps. “ Colliery Guard.,” May 8, p. 1009; 1 fig. The Determination of Carbon Monoxide in Air. F. S. Sinnatt and B. J. Cramer. “ Analyst,” April, 1914; 1 fig. “ Colliery Guard.,” May 15, p. 1068; 1 fig. Electric Mine Gas Detectors. S. F. Walker. “ Coll. Engineer,” May, p. 604; 2 fig. The Inflammable Gases in Mine Air. G. A. Burrell and F. M. Siebert. “ U.S. Bur. Mines. Techn. Paper 39 ”; 2 fig. (Shows that normal mine-air samples obtained from many mines in different parts, of the United States contain only methane as the combustible gas.) The Sampling and Examination of Mine Gases and Natural Gas. G. A. Burrell and F. M. Siebert. ‘‘U.S. Bur. Mines, Bull. 42”; 23 fig., 2 plates. (Describes various kinds of apparatus.) The Ignition of Some Gaseous Mixtures by the Electric Discharge. H. F. Coward, C. Cooper, and J. Jacobs. ‘‘Journ. Chem. Soc.,” April, p. 1069; 12 fig., 14 tables. The Connection between Firedamp Accidents and Seismic Disturbances (Der Zusammenhang Zwischen Schlagwetterkatastrophen und Erdbeben). G. von dem Borne. “ Z. Oberschles. Berg-. Hutten- Ver.,” vol. 53, No. 3, pp. 101-104. XVI.—Coal Dust. International Mine Experiment Station Conference, and Some Results at the U. S. Bureau of Mines Experimental Mine. G. S. Rice. “ Bull. Canadian Min. Inst.” No. 25, 1914, p. 87. Belgian Coal Dust Precautions. V. Watteyne. “ Coll. Engineer,” May, p. 599. Experiments at Commentry on the Inflammation of Dust (Les Experiences de Commentry sur les Inflam- mations de Poussieres). J. Taff an el. “ Ann. Mines,” vol. 5, 4, p. 233; 10 plates. X VII.—Explosions. Reports on the Senghenydd Explosion. R. A. S. Red- mayne, R. Smillie, and E. Williams. “ Colliery Guard.,” May 1, p. 948; May 8, p. 1011; 13 fig. Ravenswood Explosion. S. Dean. “ Coll. Engineer,” May, p. 607; 3 fig. (Explosion caused by blown-out shot of Monobel which was overcharged; shale dust in the entries prevented the spreading of the explosion.) XVIII.—Mine Fires. Fire-fighting Arrangements at Mount Morgan. B. Magnus. “ Eng. Min. Journ.,” May 9, p. 951; 5 fig. XIX. —Rescue and Ambulance. The Draeger Self-rescue Apparatus. R. Jacobson. “ Trans. Inst. Min. Engin.,” vol. 72, 2, p. 264; 4 fig. The Meco Half-hour Type of Portable Breathing Appa- ratus. H. C. Jenkins. ‘‘ Trans. Inst. Min. Engin.,” vol. 47, 2, p. 271; l.fig. The Huskisson Emergency Type- of Rescue Apparatus. J. G. Huskisson. “ Trans. Inst. Min. Engin.,” vol. 47, 2, p. 274; 2 fig. The Improved Pneumatogen Type of Rescue Apparatus. R. Cremer. “ Trans. Inst. Meeh. Eng.,” vol. 47, 2, p. 277; 4 fig. The Training of Men for Rescue Brigades at the Berry Hill Station. G. H. Greatbatch. “ Trans. Inst. Min. Engin.,” vol. 47, 2, p. 291. New Neupert Rescue Apparatus (Ein neuer Druck- Schlauchapparat). G. Ryba. “ Montan. Rund.,” vol. 6, No. 8, pp. 243-245; 3 illus. (Air supplied to helmet through flexible pipe by a bellows.) XX. —Drainage, Pumping, etc. A Self-cleaning Screen for Pump Intake. J. E. John- son, jun. “ Eng. Min. Journ.,” April 18, p. 801; 2 fig. (Special application for blast-furnace installa- tions.) The “ Jumper ” Control Gear. “ Colliery Guard.,” May 8, p. 1008; 5 fig. Practice and Theory of Draining Brown Coal Deposits by Horizontal Boreholes (Praxis und Theorie der Ent- wasserung der Braunkohlenlager durch Horizontal- bohrldcher). —. Sonntag. ‘‘ Braunkohle,” vol. 13, No. 2, pp. 17-21; No. 3, pp. 33-39; 15 illus. XXI. —Preparation. A New Method of Washing Coal. “ Engin. Rev.,” April, p. 371; 8 fig. (Description of the “ Rheo- laveur ” made by the Soc. Anon, des Ateliers de Const, de J. J. Gilain, Tirelmont, Belg.) Application of the Crushing Surfaces Diagram. A. 0. Gates. “ Engin. Min. Journ.,” April 18, p. 795; 10 fig- A New Rotary Coal Washing Jig. E. A. James. “ Coal Age,” May 2, p. 722; 3 fig. (Made by Mauch Chunk Iron Works, Penn.) Coal Washing Efficiency Calculations. G. R. Dela- mater. ‘‘ Coal Age,” May 2, p. 723; 1 diag. and 6 tables. An Automatic Continuous Coal Dryer. A. J. Sayers. “ Coal Age,” May 2, p. 728. (Description of Wendell drier.) XXII. —Briquettes. Fuel Briquetting Investigations, 1904-12. C. L. Wright. “ U.S. Bur. Mines Bull. 58,” 277 pp.; 21 plates and 3 fig. Briquettes from Sawdust. “ Manufacturers’ Rec.,” April 23, p. 46. (Experiments in British Columbia in connection with the lumber industry. XXIII.—Coke Ovens. Manufacture of By-Product Coke. T. V. Salt. “ Journ. Western Soc. Engin.,” February, p. 173; 8 fig. Impulse Thermostat for Abnormal Changes in Temper- ature. E. A. James. “ Eng. Min. Journ.,” April 25, p. 876; 2 fig. Recording Pyrometers. C. R. Darling. “ Page’s Eng. Wkly.,” May 1, p. 526; 3 figs. (Abst. paper read before Faraday Soc.) The Mallet Ammonia Recovery Process. “ Gas Wld. (suppl.),” May 2, p. 12; 5 fig. (Trans. ‘‘ Rev. Metall. ”) The Automatic Control of By-Product Coke Oven Plants—(vi.) A. Thau. “ Gas Wld. (suppl.),” May 2, p. 14; 7 fig. (This instalment deals with meters.) Notes on the Utilisation of Coke Oven and Blast-Furnace Gas for Power Purposes. H. J. Freyn. “ Bull. Am. Inst. Min. Engin,” April, p. 665. Practical Notes on Retort House Work—(i.) “ Arnicas.” “ Gas Wld.,” May 9, p. 630; 8 fig. (Discusses the selection of fire clays, etc.) Electrically-Driven Coal Charging Cars for Coke Ovens. “ Iron Coal Tr. Rev.,” May 15, p. 752; 3 fig. Another Contribution to the History of the Direct Recovery Process. D. Bagley. “ Iron Coal Tr. Rev.,” May 15, p. 747; 2 fig. The Recovery of By-Products : the Plant Required and its Location. K. Austin. “ Journ. S. African Inst. Engin.,” April, p. 170; 5 fig. Modern By-Product Coking. G. S. Cooper. “ Gassier’s Eng. Mthly.,” May, p. 325; 9 fig. A Problem of Modern Gas Practice. J. W. Cobb. “ Gas Wld.,” p. 639. (Paper read before N. of Eng. Man. Assoc., dealing with recovery of nitrogen.) Supplying Coke Oven Gas from a Distance (Die Fern- versorgung mit Koksofengas). R. Witzeck. “ II. Gasbeleuchtung,” vol. 57, No. 16, pp. 361-368; No. 17, pp. 389-392. Contribution to the Heat Technics of the Hoppers Coke Oven (Beitrage zur Warmetechnik der Koppersschen Koksofen). A. Wilczek. “ Gluckauf,” vol. 50, No. 17, pp. 649-659; No. 18, pp. 692-700; 26 illus. and 28 tables. XXIY.—Fuels, Testing, etc. The Generation and Distribution of Producer-Gas in South Staffordshire. H. A. Humphrey. “ Proc. Inst. Civil Engin.,” vol. 192, ii.; 18 fig. Some Calorimetric Determinations of Kentucky Coals. A. M. Peter. “ Coal Tr. Bull.,” May 1, p. 27. (Paper read before Kentucky Mining Inst.) Coal and Its By-Products. L. C. Jones. “ Journ. Franklin Inst.,” May, p. 511; 2 maps and 8 fig. (Origin, distribution, and distillation products of coal.) The Determination of Ammonia in Illuminating Gas. J. D. Edwards. “ U.S. Bur. Standards, Techn. Pap. 34.” By-Products from Peat. F. M. Perkin. “ Journ. Soc. Chem. Ind.,” April 30, p. 395. Study of the Valuation of the Calorific Power of Coals.- (Etude sur 1’Evaluation du Pouvoir Calorifique des Charbons). R. Lambert. “ Rev. Universelie Mines, Metall.,” April, p. 1; 3 diagrams. (Shows the correc- tion to be made for the presence of water.) By-Products of Steel Manufacture. F. Greiner. “ Coll. Guard.,” May 15, p. 1079. (Abst. Presidential Address, Iron Steel Inst.) Separation of the Gaseous Paraffins by Fractional Dis- tillation at Low Temperatures. G. A. Burrell and F. M. Siebert. “ Colliery Guard.,” May 22, p. 1119; 2 fig. (Abst. paper read before Am. Chem. Soc.) Formation of Ammonia and Hydrocyanic Acid in the Distillation of Coal. A. Simmersbach. “ Colliery Guard.,” May 22, p. 1124. (From Report to German Coke Commission.) Coal and the Chemistry of its Carbonisation. J. Harger. “ Journ. Soc. Chem. Ind.,” April 30, p. 389. Recent Improvements in Gas Manufacture. A. E. Forstall. “ Journ. Soc. Chem. Ind.,” April 30, p. 398. Researches on the Formation of Ammonia and Hydro- cyanic Acid in the Distillation of Coal (Unter- suchungen uber die Bildung von Ammoniak und Zyan- wasserstoff bei der Steinkohlendestillation). 0. Simmersbach. “ Gluckauf,” vol. 50, No. 19, pp. 739- 744; No. 20, pp. 801-805. Distillation of Coal at Low Temperatures (Ueber Kohlendestillation bei niedriger Temperatur). A. Thau. “ Gluckauf,” vol. 50, No. 21, pp. 834-841; 11 illus. (Coalite, Premier Tarless Fuel, and Del Monte- Everett processes.) New Methods of Tar Distilling (Ueber einige neuere Destillationsverfahren). Dr. Rosenthal. ‘‘ Braun- kohle,” vol. 13, No. 5, pp. 65-69. (Seidenschnur, Sadewasser, Kubierschky, Porges, and Steinschneider processes.) XXY.—Steam Engines and Boilers. Locomotive Fuel Consumption and the Speed Diagram. A. K. Shurtleff. “ Proc. Am. Rly. Eng. Assoc.,” vol. 14, 2, p. 3. The Prat System of Induced Draught. “ Engineer- ing,” April 24, p. 554; 12 fig. The Heat Analysis of an Oil-fired Water Tube Boiler. I. R. W. Rennie. “ Engineer,” May 1, p. 472; 4 fig. Combined Cylindrical and Water Tube Boiler. “ Engi- neer,” May 1, p. 488; 4 fig. (Tests of a 16z x 8' Hudson boiler.) Anthracite Colliery Boiler Plants. J. F. McMahon. “ Coal Age,” April 25, p. 678; 6 fig. Heat Analysis of an Oil-fired Water Tube Boiler. D. W. Rennie. “ Engineer,” May 8, p. 499; 9 fig. The Bonecourt Surface Combustion Process—1. “ Engi- neer,” May 15, p. 525; 5 fig. 2, May 22, p. 557; 5 fig- New Boilers and Coal Handling Plant at Southend. “ Engineer,” May 15, p. 543; 6 fig. A Central Exhaust Steam Engine. “ Engineer,” May 15, p. 547; 6 fig. Burning Pulverised Coal and Oil Mixed. A. Trandt. “ Iron Age,” April 23, p. 1048; 1 fig. Cause of Explosion of a Colliery Boiler (Recherche des Causes de 1’Explosion d’une Chandiere a Vapeur). V. Firket. ‘‘ Ann. Mines Belg.,” vol. 19, No. 2, pp. 401-412. (Boiler at St. Paul Pit, Ben-Ahin. Explo- sion ascribed to the electro-chemical corrosion.) Schnabel-Bone Surface Combustion for Steam Raising (Oberflachenverbrennung nach Schnabel-Bone fur Dampfkesselbeheizung). F. Georgius. “ Braun- kohle,” vol. 13, No. 4, pp. 49-56; 11 illus. XXYI.—Compressed Air. The Turbo-Blower and Turbo-Compressor. G. Ingram. “ Proc. Inst. Civil. Engin.,” vol. 192, ii.; 9 fig. A New Volume Regulator for Air Compressors. O. R. Wikander. “ Indus. Wld.,” April 20, p. 458; 5 fig. (Method introduced by Hall Steam Pump Company; utilises small auxiliary chamber to increase or reduce rate of air delivery, maintaining constant pressure with variable consumption.) Air-Compressor Plant at Ferndale Collieries. ‘‘ Iron Coal Tr. Rev.,” May 8, 1914, p. 721; 3 fig. XX YIL—Electricity. A Modern Sub-Station in the Coeur d’ Alene Mining District. J. B. Fisken. “ Proc. Am. Inst. El. Engin.,” vol. 32, 9, p. 1771; 16 fig. Mine Sub-Stations : Construction, Operation, and Equipment. H. Booker and W. M. Hoen. “ Indust. Wld.,” April 20, p. 462. (From papers read before Amer. Inst. El. Engin.) Automatic Controllers for Mining Work. G. W. Humphry. “ Iron Coal Tr. Rev.,” April 24. p. 604; 7 fig. (Paper read before Assoc. Min. El. Engin.) Mine Duty Controllers. H. P. Reed. “ Indust. Wld.,” April 13, 1914, p. 428; 4 fig. (From a paper read before Am. Inst. Elect. Engin. Describes Sherbin’s system of fan motor control, also pump motor, loco- motive, and winding engine controllers.) Some Hints for Colliery Electrical Plant. J. A. Kerr. “ Iron Coal Tr. Rev.,” May 8, 1914, p. 714; 6 fig. (Paper read before Assoc. Min. Elect. Engin.) The Safety of Underground Electrical Installations. C. M. Means. “ Bull. Am. Inst. Min. Engin.,” April, p. 695. Safeguarding the Use of Electricity in Mines. H. H. Clark. “ Bull. Am. Inst. Min. Engin.,” April, p. 716. Operating Induction Motors. C. A. Tupper. ‘‘ Coll. Engineer,” May, p. 609; 5 fig. Safeguarding Electricity in Mines. W. E. Freeman. “ Coll. Engineer,” May, p. 619. (Abst. paper read before Kentucky Min. Inst.) The Action of Acid Mine Water on the Insulation of Electric Conductors. H. H. Clark and L. C. Ilsley. “ U.S. Bur. Mines, Techn. Paper 58.” “ Colliery Guard.,” May 22, p. 1125; 2 tables. (A prelimi- nary report.)