Engineering 1922 Jul-Dec: Index: Letters to the Editor

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LETTERS TO THE EDITOR

AERIAL Propellers, Lannhester-Prandtl I E Theory. A. E. Low, 739
Aeronautics, Lanchester-Prahdtl Theory,
Airscrew Action. A. R. Low, 789
Air Heaters, Boiler Furnaces. A. Atkins, 44
Airscrews, LanchCster-Prandtl Theory. A. R. Low, 739*
Allowances, Production of Screw Threads. See Screw Threads,
America, Dam Construction in. See Dams
Arched Dams. See Dams
Armstrong, Whitworth and Co., Ltd., Vibrac Steel for Geared Turbine Pinions. See Marine Propulsion
Atoms, Non-Radiating, and Theory of Magnetism. A. E. Oxley, 438

BEARINGS, Lubrication of, National Physical Laboratory Research. See Lubrication
Boiler, Cochran, Trials with Kermode Oil Fuel System. J. J. Kermode, 710
Boiler Furnaces, Air Heaters for. A. Atkins, 44
Boilers, Marine, Mechanical Stokers for D. Brownlie, 470
Boilers, Marine, Oil Fired, Starting from Cold. P. W. Lockwood, 563.
Boiler Plants, Chimney Draught, Effect of Fog. R. E. Crompton, 564
Boiler Plants, Economical Steam Production. D. Brownlie. 363„ I
Bridge Girders, Stresses in, Allowance for Rivet Holes. W. H. Thorpe, 364
Bridges, Railway, Strength of. T. A. B., 329 ; F. Tiffany, 363, 408, 502 ; C. Gribble, 407; W. H. Thorpe, 437 ; H. R. Lewis, 469
British Railways, Use of Concrete on. C. A. Longley, 769

CALORIFIC Value, Liquid Fuels, Determination of. J. S. G. Thomas, 769
Capital Claims and Industrial Economics. See IrwiusfnoZ Economics
Catalogues for Foreign Countries. C. Saxton, 470. See Erratum, 533
Channels, Concrete, Water Flow in. See Frictional Coefficients
Chemical Industries, Evaporating Plant for. See Evaporating Plant Chimney Draught, Effect of Fog. R. E. Crompton, 564,
Cochran Boiler, Trials with Kermode Oil Fuel ( System. J. J. Kermode, 710
Coefficient, Standard, Pipe Resistance. See Frictional Coefficients
Coercivity and Magnetic Hysteresis Loss, Relationship. See Magnetic
College Students, Workshop Training. See- Education•
College Training. See Education
Commercial Value of College Training. See Education
Concrete Pipes and Channels, Water Flow in. See Frictional Coefficients
Concrete, Resistance to Fire. F. C. Lea and R. E. Stradling, 363
Concrete, Use on British Railways. C. A. Longley, 769
Corrosion Research Committee, Institute of Metals, Report to. W. H. J. Vernon, 438
Cupola, Production of Semi-Steel in. A. Campion, 44
Cutting Tools. See Machine Tools

DAMS, Arched, Design land Construction of. F. A. Noetz, 616
Degree, Engineering, London University, Examination Syllabus. E. E. Mann, 586
Dielectric Constants, Measurement by Thermionic Valves. J. E. P. Wagstaff, 502
Distillation and Evaporation, Chemical Industries. See Evaporating Plant
Double-Reduction Gears, Marine Turbines. See Marine Propulsion
Draught, Chimney, Effect of Fog. R. E. Crompton, 564

ECONOMICAL Steam Production. See Boiler Plants
Economics, Industrial. See Industrial
Economics, Railway Electrification, Main Lines. C. Belli, 501
Education, Engineering Degree, London University, Examination Syllabus. E. E. Mann, 586
Education, Engineers’, Commercial Value of College Training:“ Graduate.” 276; “ Spero Meliora,” 306 ; R. Keddie, 306 ; Anti-Professor,” 306, 364 ;“ Another Graduate,” 330; H. S. Burn, 364 ; R. P., 364 ; C. Saxton, 408; J. Jagger, 408; “ Cordido,” 6751
Education of the Worker. N. J. Maclean, 14 1
Education, Workshop Training of College Students. L. 0. Free, 44; H. 0. Parraok, 75 ; R. W. 0. Prosser, 75
Efficiency of Boiler Plants. See Boiler Plants Elastic Limit, Raising by Strain. “ Convinced,” 14 ; H. Munro, 44
Electrification of Main Line Railways. C. J Belli, 501
Energy, Nature of. “ A Constant Reader of Engineering since 1870,” 236, 364, 437;“ B.Sc. (London),” 276; “ An Occasional Reader of Engineering since 1910,” 329,408
Engineering Degree, London ‘University Examination Syllabus. E. E. Mann, 586
Engineering Students, Workshop Training. See Education
Engineers' Education. See Education
Epicyclic Gear Problem, Solution of. G. W. B. Hext, 564
Evaporating Plant, Chemical Industries. J. B. J Maclean, 176, 363,* 438, 502 ; A. J. Liversedge, 306, 438; J. W. Hinchley. 408
Examination Syllabus, London University Engineering Degree. E. E. Mann, 586

FERRO-CONCRETE, Resistance to Fire. F. C. Lea and R. E. Stradling, 363
Filters, Sewage, Gas from. See Sewage
Filters Fire Resistance of Concrete. F. C. Lea and R. E. Stradling, 363
Floating Frame, Geared Turbines, Advantages. See Afdrino Propulsion
Fogs and Chimney Draught. R. E. Crompton, 564
Foreign Countries, Catalogues for. C. Saxton, 470. See Erratum, 533
Foundry Work, Production of Semi-Steel. A. Campion, 44
Frictional Coefficients, Water Flow in Concrete Pipes and Channels. B. P. Haigh, 330; E. Parry, 408
Fuels, Liquid, Determination of Calorific Values. J. S. G. Thomas, 769
Furnaces, Boiler, Air Heaters for. A. Atkins, 44

GAS Calorimeters, Determination of Calorific Values of Liquid Fuels by. J. S. G. Thomas, 769 .
Gas from Sewage Filters. See Sewage Filters
Gauging of Screw Threads. See Screw Threads
Geared Turbines. See Marine Propulsion Gears, Epicyclic, Solution of Problems. G. W. B. Hext, 564
Gears, Helical, Stress Distribution in. C. E. Stromeyer, 675
Girders, Bridge. See Bridge
Graphical Solution, Epicyclic Gear Problems, G.W. B. Hext, 564

HEAT, Effect on Concrete. F. C. Lea and R. E. Stradling, 363
Heaters, Air,for Boiler Furnaces. A. Atkins, 44
Helical Gears. See Gears and Marine Propulsion
Holes, Rivet, Bridge Girders, Allowance for. See Bridge Girders
Hydraulics, Water Flow in Concrete Pipes and Channels. See Frictional Coefficients
Hysteresis, Magnetic, and Coercivity, Relationship. See Magnetic

IMPACT on Railway Bridges. See Bridges
Impact Testing Machine, Repeated Blow, Steel for Geared-Turbine Pinions. W. H. Hatfield, 738*; W. Austin, 769
Industrial Administration. W. A. J. O’Meard, 502
Industrial Economics, Claims of Capital. H. P. Vowles, 74, 207 ; E. H. Dance, 154
Institute of Metals, Report to Corrosion . Research Committee. W. H. J. Vernon, 438 *Instruments, Scientific, Design of Knife Edges. W. H. Martin, 75*
Iron, Magnetic Hysteresis Loss and Coercivity. See Magnetic
Iron Wire, Raising Elastic Limit. See Elastic Limit

KERMODE Oil Fuel System, Trials of Cochran Boiler with. J. J. Kermode, 710
Knife Edges, Scientific Instruments, Design of. W. H. Martin, 75* v

LABORATORY, National Physical, Research on Lubrication. See Lubrication.
Labour, Education of the Worker. N. J. Maclean, 14
Lanchester-Prandtl Theory, Airscrew Action A. R. Low, 739*
Lathe Tools. See Machine Tools
Liquid Fuel. See Oil
Load Factor, Effect on Power Station Costs. See Power Stations .
London University Engineering Degree, Examination Syllabus. E. E. Mann, 586 *Lubrication, Turbine Gearing, Pressures in Oil Films. See Marine Propulsion
Lubrication Research, National Physical Laboratory. T. E, Stanton, 437, 470

MACHINE Tools, Cutting Tools, Suggested Research. J. Pickin, for A. Herbert, ltd., 408; R. Keddie, 438; C. Day, 470
Magnetic Hysteresis loss and Coercivity. A. E. Warren, 486*; A. Press, 616; T. Spooner, 710 ; N. 1. Anderson, 769.
Magnetic Susceptibilities, Measurement by Thermionic Valves. J. E. P. Wagstaff, 502
Magnetism, Theory of, and Non-Radiating Atoms. A. E. Oxley, 438
Marine Boilers. See Boilers
Marine Propulsion, Geared Turbines, Advan¬tages of Floating Frame. J. H. Maoalpine, 68
Marine Propulsion, Geared Turbines, Effects of Misalignment. J. H. Macalpine, 468
Marine Propulsion, Geared Turbines, Mathe¬matical Investigation of Torsional Oscilla¬tions. J. H. Smith, 600 ; A. Eagle, 678
Marine Propulsion, Geared Turbines, Pressures in Oil Finns. J. H. Macalpine, 468; A. F. Ainslie, 469
Marine Propulsion, Geared Turbines, Steel for Pinions. W. C. Rowden, 276*, 438, 632*, 586; W. Austin, 306, 468, 769 ;• W. H. Hat¬field, 364, 469, 563, 738*; T. M. Service, 532*, 648; R. R. G. Chisholm, 586, 739
Marine Propulsion, Mechanical Stokers for Boilers. D. Brownlie, 470
Marine Propulsion, Steam Generation, Economy in. D. Brownlie, 363
Marine Propulsion, Vane-Wheel System. W. Sisson, 14, 276
Mathematics of Geared-Turbine Drives. See Marine Propulsion,
Matter, States and Entities. See Energy, Nature of
Mechanical Stokers for Marine Boilers. D. Brownlie, 470
Mechanics, Nature of Energy. See Energy Melville-Macalpine Floating Frame, Geared
Turbines. See Marine Propulsion
Metal-Cutting Tools. See Machine Tools Metals, Institute of, Report to Corrosion
Research Committee. W. H. J. Vernon, 438
Ministry of Transport and Strength of Railway Bridges. See Bridges
Motor Fuels, Determination of Calorific Values. J. S. G. Thomas, 769

NATIONAL Physical Laboratory, Research on Lubrication. See Lubrication
Nickel Steel for Pinions, Geared Turbines. See Marine Propulsion

OIL Films, Turbine Gearing, Pressures in. See Marine Propulsion
Oil-Fired Boilers, Marine, Starting from Cold, 563
Oil Fuel, Determination of Calorific Values. J. S. G. Thomas, 769
Oil Fuel, Kermode System, Trials of Cochran Boiler with. J. J. Kermode, 710
Oscillations, Torsional, Geared Turbine Shafts. See Marine Propulsion

PETROL, Determination of Calorific Value. J. S. G. Thomas, 769
Physics, Nature of Energy. See Energy
Pinions, Geared - Turbine, Steel for. See Marine Propulsion
Pipes, Concrete, Water Flow in. See Fric¬tional Coefficients
Power Stations, Effect of Load Factor on Costs. W. A. Vignolles, 648; W. L. Coats, 648; J. W. Beauchamp, 648
Prandtl Theory, Airscrew Action. A. R. Low, 739*
Propellers, Aerial, Lanchester-Prandtl Theory. A. R. Low, 739*
Propeller Shafts, Geared Turbines, Torsional Oscillations. See Marine Propulsion

RAILWAY Bridges. See Bridges Railway Electrification, Main Lines, Econo¬mics of. C. Belli, 501
Railways, British, Use of Concrete on. C. A. Longley, 769
Reduction Gears, Marine Turbines. See Marine Propulsion
Reinforced Concrete. See Ferro-Concrete
Repeated Blow Impact Testing Machine, Steel for Geared Turbine Hnions. W. H. Hat¬field, 738* ; W. Austin, 769
Report, Corrosion Research Committee, Insti¬tute of Metals. W. H. J Vernon, 438
Research, Corrosion, Institute of Metals, Report. W. H'. J. Vernon, 438
Research, Cutting Tools. See Machine Tools Research, lubrication, National Physical Laboratory. See Luiricofion
Resonance Forces, Geared Turbine Drives. See Marine Propulsion, Geared Turbines, Mathematical Investigation of Torsional Oscillations
Rivet Holes, Bridge Girders, Allowancelor, See Bridge Girders

SCIENTIFIC Instruments, Design of Knife Edges. W. H. Martin, 75*
Screw Threads, Gauging of. A. C. Wickman, for A. Herbert, Ltd.,.13
Secondary Stresses, Railway Bridges. See Bridges, Railway, Strength of
Semi-Steel, Production in Cupola. A. Cam¬pion, 44 V
Sewage Filters, Gas from. A. J. Martin, 74 ; 0. A. Suckan, 110
Shafts, Propeller, Geared Turbines, Torsional Oscillations. See Marine Propulsion
Shallow-Draught Steamers, Vane-Wheel Propulsion. W. Sisson, 14, 276
Ship Propulsion, Vane-Wheel. System. W. Sisson, 14, 276
Standard Coefficient, Pipe Resistance. See Frictional Coefficients
Steam Production, Economical. See Boiler Plants
Steam Turbines. See Turbines; Marine Propulsion
Steamers, Shallow-Draught, Vane-Wheel Pro¬pulsion. W. Sisson, 14, 276
Steel for Pinions, Geared Turbines. See fifortne Propulsion
Steel, Raising Elastic Limit of. See Elastie Limit
Steel, Semi-, Production in Cupola. A. Cam¬pion, 44
Stokers, Mechanical, for Marine Boilers. D Brownlie, 470
Stress Distribution in Helical Gears. C. E. Stromeyer, 676
Stresses in Railway Bridges. See Bridges

TENSILE Tests, Iron Wire, Raising Elastic Limit. See Elastic Limit
Testing Machine, Impact, Repeated Blow, Steel for Geared-Turbine Pinions. W. H. Hatfield, 738 ; W. Austin, 769
Tests of Steel, Geared Turbine Pinions. See Marine Propulsion
Tests, Tensile, Iron Wire, Raising Elastie Limit. See Elastic Limit
Thermionic Valves, Measurement of Dielectric Constants and Magnetic Susceptibilities. J. E. P. Wagstaff, 502
Threads, Screw. See Screw Threads
Tolerances, Production of Screw Threads. See Screw Threads
Tools, Cutting. See Machine Tools
Torsional Oscillations, Geared-Turbine Shafts. See Marine Propulsion
Trade Catalogues for Foreign Countries. C. Saxton, 470. See Erratum, 533
Transformer Iron, Hysteresis Loss and Coercivity. See Magnetic
Transport, Ministry of, and Strength of Rail¬way Bridges. See Bridges
Trials, Cochran Boiler, with Kermode Oil- Fuel System. J. J. Kermode, 710
Turbines, Steam, Marine, Geared. See Marine Propulsion

UNITED STATES, Dam Construction in. See Dams
University of London, Engineering Degree, Examination Syllabus. E. E. Mann, 586

VALVES, Thermionic, Measurement of Dielec¬tric Constants and Magnetic Susceptibilities. J. E.P. Wagstaff, 502

Vane-Wheel Propulsion, Shallow - Draught Steamers. W. Sisson, 14, 276
Vibrac Steel, Geared-Turbine Pinions. See Marine Propulsion

WATER Flow in Concrete Pipes and Channels. See Frictional Coefficients
Wire, Iron, Raising Elastic Limit. See Elastic Limit.
Workers, Education-of. N. J. Maclean, 14
Workshop Training. See Education

Grace's Guide To British Industrial History

Engineering 1922 Jul-Dec: Index: Letters to the Editor