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Metallurgy: A Series

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An Introduction to the Study of Physical Metallurgy. Walter Rosenhain, B.A., D.Sc., F.R.S. 12/6 net. ( See p. 17. )

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Internal Combustion Engines

Hot Bulb Oil Engines and Suitable Vessels. Walter Pollock, M.I.N.A., M.I.Mech.E., M.I.M. Demy 8vo. Fully Illustrated. 42/- net.

Contents. —Scope of Book. Introductory Remarks. Comparison for Power. Demand for Engines. Owner’s Requirements. Makes of Engines. Design of Engine. Materials. Workmanship. Hot Bulbs. Fuel Pumps. Oil v. Coal. Advantages, Disadvantages. Supply of Oil Fuels. Designs of Vessels, Coefficients of Fineness. Notes on Working. Stopping the Engine. Attention while Running. Manœuvring and Running Light. Maintenance and Overhauling. Engineers’ Log. Tools. Spares for Engines. Superintendence. Notes on Installing. Classification. Lloyd’s Scantlings. Port Authorities. Passenger Certificates. Auxiliary Machinery.

The Internal Combustion Engine. Being a Text-Book on Gas, Oil, and Petrol Engines, for the use of Students and Engineers. H. E. Wimperis, M.A., M.I.E.E. 3rd Edition Revised and Enlarged. Demy 8vo. 8/6 net.

Contents. —Preface. List of Symbols. Tables of Constants. Molecular Weights of Gases. Elementary. Thermodynamic Cycles, Combustion and Explosion. Thermodynamics. The Gas Engine. The Gas Producer. Blast-Furnace and Coke-Oven Gases. Oil and Petrol Engines. Petrol Engine Efficiency and Rating. Problems and Solutions. Index.

A Primer of the Internal Combustion Engine. A Text-Book for First and Second Year Students. H. E. Wimperis, M.A., M.I.E.E. , etc. Crown 8vo. 3rd Imp. 4/- net.

Contents. —List of Symbols. Useful Constants. Introductory. Theory of Heat. Behaviour of Gases and Vapours. The Ideal Engine. The Real Engine. Fuels and Gas Producers. Engine Details. Engine Tests. Bibliography. Examples and Answers. Index.

Governors and the Governing of Prime Movers. Trinks. ( See p. 16. )

Diesel Engine Design. H. F. P. Purday. Demy 8vo. 271 Illustrations. 21/- net.

Contents. —First Principles. Thermal Efficiency. Exhaust, Suction and Scavenge. The Principle of Similitude. Crank. Shafts. Fly-Wheels. Framework. Cylinders and Covers. Running Gear. Fuel Oil System. Air and Exhaust System. Compressed Air System. Valve Gear. Index.

The Diesel Engine for Land and Marine Purposes. 4th Edn. Revised and brought up to date. A. P. Chalkley, B.Sc., A.M.Inst.C.E., A.I.E.E. Demy 8vo. 12/6 net.

Contents. —Introduction. General Theory of Heat Engines, with Special Reference to Diesel Engines. Action and Working of the Diesel Engine. Construction of the Diesel Engine. Installing and Running Diesel Engines. Testing Diesel Engines. Diesel Engines for Marine Work. Construction of the Diesel Marine Engine. The Future of the Diesel Engine. Appendix. Index.

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High Power Gas Engines. H. Dubbel. Translated, edited and expanded to include British Engines and Practice, by F. Weinreb. 197 + xii pages. 436 Illustrations. 18/- net.

Contents. —Author’s Preface. Translator’s Preface. The Cycle of the Gas Engine. Output and Cylinder Dimensions. The Governing of the Four-Cycle Engines. Valve Gear of Four-Cycle Engines. The Two-Cycle Engine. Valve Gears. Ignition. The Cylinders. Valves and their Cooling. Pistons and their Cooling. Stuffing Boxes. General Design of Principal Parts. Calculation of the Flywheel Weight. Starting. Piping.

The Gas Turbine. Norman Davey. 248 + xiv pages. 100 Illustrations. Demy 8vo. 15/- net.

The Gas Engine. W. J. Marshall, A.M.I.M.E. , and Captain H. Riall Sankey , late R.E., M.I.M.E. , etc. Extra Crown 8vo. 12/6 net.

Contents. —Theory of the Gas Engine. The Otto Cycle. The Two-Stroke Cycle. Water Cooling of Gas Engine Parts. Ignition. Operating Gas Engines. Arrangement of a Gas Engine Installation. The Testing of Gas Engines. Governing. Gas and Gas Producers.

The Energy-Diagram for Gas. F. W. Burstall, M.A. , Chance Professor of Mechanical Engineering in the University of Birmingham. With Descriptive Text. 5/- net. The Diagram sold separately, 2/- net.

American Gas-Engineering Practice. M. Nisbet-Latta , Member American Gas Institute, M.Am.Soc.M.E. 142 Illustrations. Demy 8vo. 18/- net.

Gas Engine Design. Charles Edward Lucke, Ph.D. , Mechanical Engineering Department, Columbia University, New York City. Demy 8vo. 12/6 net.

Gas Engine Construction. By Henry V. A. Parsell, Jr., M.A.I.E.E. , and Arthur J. Weed, M.E. 2nd Edn. Demy 8vo.

Gas, Gasoline, and Oil Engines. Gardner D. Hiscox, M.E. , Author of “Mechanical Movements,” “Compressed Air,” etc. 22nd Edn, largely rewritten and brought up to date, by Victor W. Page, M.E. Demy 8vo. 18/- net.

A complete practical work defining the elements of internal combustion, engineering, treating exhaustively on the design, construction and practical application of all forms of gas, gasoline, kerosene and crude petroleum oil engines, describing auxiliary systems, the theory and management of explosive motors for stationary and marine work, automobiles, aeroplanes and motor cycles, also producer gas and its production.

British Progress in Gas Works Plant and Machinery. C. E. Brackenbury, C.E. , Author of “Modern Methods of Saving Labour in Gas Works.” Super-Royal 8vo. 6/- net.

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Steam Engines, Boilers, etc.

Governors and the Governing of Prime Movers. Trinks. 22/6 net.

A Manual of the High-Speed Steam Engine. H. Keay Pratt, A.M.I.Mech.E. Demy 8vo. 6/- net.

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The Modern Steam Engine. Theory, Design, Construction, Use. John Richardson, M.Inst.C.E. With 300 Illustrations. Demy 8vo. 7/6 net.

Boiler Explosions, Collapses and Mishaps. E. J. Rimmer, B.Sc. , etc. Demy 8vo. 4/6 net.

The Steam Engine and Turbine. Robert C. H. Heck, M.E. Demy 8vo. 27/6 net.

Test Methods for Steam Power Plants. A reference book for the use of Power Station Engineers, Superintendents, and Chemists. E. H. Tenney, B.A., M.E. Ex Crown 8vo. 85 Illustrations. 24/- net.

Contents. —Purchase and Testing of Coal. Investigation of the Economy of Combustion. Treating and Testing Water for Boiler-feed Purposes. Evaporating Tests. Testing Prime Movers. Power Plant Lubricants.

Engine Tests and Boiler Efficiencies. J. Buchetti. Translated and Edited from the 3rd Edition by Alexander Russell, M.I.E.E. , etc. Demy 8vo. 10/6 net.

Boiler Draught. H. Keay Pratt, A.M.I.M.E. Crown 8vo. 4/6 net.

Contents. —Draught. Calculations relating to Air. Chimneys. Construction. Artificial Draught. Forced Draught. Induced Draught. A comparison. The Application of Mechanical Draught for Land Installations. The Application of Mechanical Draught in Marine Practice. The Chemistry of Combustion. Index.

Practical Design of Marine Single and Double-Ended Boilers, including Uptakes, etc. John Gray , Member of North-East Coast Inst. of Engineers and Shipbuilders. Contains New Board of Trade and Lloyd’s rules relating to Marine Boilers. 2nd Edition Revised and Enlarged. Demy 8vo. 12/6 net.

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Steam Boilers: Their History and Development. H. H. Powles, M.I.M.E. , etc. Imperial 8vo. 25/- net.

Steam Pipes: Their Design and Construction. W. H. Booth , Author of “Liquid Fuel,” etc.

New Edition in Preparation.

The New Steam Tables. Calculated from Professor Callendar’s Researches. Professor C. A. M. Smith, M.Sc. , and A. G. Warren, S.Sc. 4/6 net.

Experimental Researches on the Flow of Steam through Nozzles and Orifices. To which is added a note on the Flow of Hot Water. A. Rateau. Crown 8vo. 5/- net.

Fuel and its Combustion

Fuel, Water and Gas Analysis for Steam Users. John B. C. Kershaw, F.I.C. Demy 8vo. 2nd Edn., revised and enlarged. 12/6 net.

Contents. —Origin of Natural Fuels. Physical and Chemical Characteristics of Wood, Peat, Lignite, Bituminous Coal, Semi-Anthracite, Anthracite, and Coke. Liquid Fuels. Briquette Fuels. Sampling and the Preliminary Test for Moisture. Apparatus and Methods used for the Approximate Analysis of Fuels. Special Tests for Sulphur. Apparatus and Methods used for the Calorific Valuation of Solid Fuels. The Practical Application of the Test Results. Forms of Fuel Contract Based upon the Test Results. Sources of Feed-water Supply. Physical and Chemical Characteristics of Well, River, Surface, and Rain Water. Collecting Samples. Apparatus and Methods used for the Approximate Analysis of Feed-waters. Special Tests for Oil. The Practical Applications of the Test Results. The Use of Softening Apparatus and Reagents, and the Tests necessary for obtaining the Best Results. Chemical and Physical Characteristics of the Waste Gases from Various Fuels. Collecting Gas Samples. Apparatus and Methods used for the Approximate Analysis of the Waste Gases. The Applications and Use of Continuous and Recording Gas-testing Apparatus. The Practical Applications of the Gas Test Results. Rules for Sampling Fuel. Typical Tests of English and South Wales Coals. Goutal’s Formula for Calculating the Calorific Value from the Results of the Approximate Analysis. The Use of Fuels of Low Calorific Value for Steam-raising Purposes. Tests of Natural and Feed Waters from Various Sources. Typical Tests of Exit Gases.

Powdered Coal as a Fuel. C. F. Herington. Medium 8vo. 84 Illustrations. New Edition. 30/- net.

Contents. —Introductory. Coals Suitable for Powdering. Preparation of Powdered Coal. Feeding and Burning. Use in the Cement Industry. Reverberatory Furnaces. In Metallurgical Furnaces. Under Boilers. For Locomotives. Explosions.

Oil Fuel Equipment for Locomotives. Alfred H. Gibbings, A.M.Inst.C.E. Demy 8vo. Tables. 8/6 net.

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An Introduction to the Study of Fuel. A Text-Book for those entering the Engineering, Chemical and Technical Industries. F. J. Brislee, D.Sc. Demy 8vo. 2nd Edn. 9/6 net. (Outlines of Industrial Chemistry.)

Contents. —General Chemical Principles. Weight and Volume of Air required for Combustion. Analysis of Fuel and Flue Gases. Calorimetry and Determination of the Heating Value of a Fuel. Measurement of High Temperatures. Pyrometry. Calculations of Combustion Temperatures. Natural Solid Fuels. Artificial Solid Fuels. Gaseous Fuel. The Manufacture of Producer Gas and Water Gas. Theory of the Producer Gas and Water Gas Reactions. Explosion and the Explosion Engine. Air Supply and Measurement of Draught. Furnace Efficiency and Fuel Economy. Heat Balances, Furnace and Boiler Tests. Liquid Fuels.

Liquid Fuel and its Combustion. W. H. Booth, F.G.S., M.Am.Soc.C.E. , Author of “Water Softening and Treatment,” “Steam Pipes: Their Design and Construction.” With Illustrations and Diagrams. Imperial 8vo. 24/- net.

Liquid Fuel and its Apparatus. William H. Booth, F.G.S., M.Am.Soc.C.E. , Author of “Liquid Fuel and its Combustion,” etc. Demy 8vo. New Edition. 9/- net.

Part I. Theory and Principles. Part II. Practice. Part III. Tables and Data.

Low Grade and Waste Fuels for Power Generation. J. B. C. Kershaw, F.I.C. Demy 8vo. Illustrated. 17/- net.

Contents. —Part I. Fuels : Introduction. Peat. Lignite, Bagasse and Wood Waste. Coke and Coke-Breeze. Culm and Washery. Waste. Towns’ Refuse and Garbage. Pitch. Waste Gases.—Part II. Scientific Control : Fuel Sampling and Testing. Calorimetric Tests. Boilers and Furnaces. Automatic CO₂ Apparatus. Index.

Liquid and Gaseous Fuels and the Part they Play in Modern Power Production. Vivian B. Lewes, F.I.C., F.C.S. , late Professor of Chemistry, Royal Naval College, Greenwich. 2nd Edition Revised and Enlarged. Edited by J. B. G. Kershaw, F.I.C. Ex. Crown 8vo.

Coal. James Tonge, M.I.M.E., F.G.S. , etc. Lecturer on Mining at Victoria University, Manchester. Ex. Crown 8vo. 7/6 net.

Domestic Fuel Consumption. A. H. Barker, B.A., B.Sc. , Author of “The Theory and Practice of Heating and Ventilation,” etc. Demy 8vo. 180 pp. 14/- net.

Written so as to be readily comprehensible by any person without scientific training, this book will be read with interest and profit by all who, whether for private or public purposes, are desirous of checking the present lavish waste of our fuel resources.

Oil Firing for Kitchen Ranges and Steam Boilers. E. C. Bowden-Smith, M.I.Mech.E. Demy 8vo. 9/- net.

A concise and practical account of the methods of employing heavy residues and fuel oil in a kitchen range for culinary purposes, and also for steam boilers.

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Machinery, Power Plants, etc.

Theory and Practice of Mechanics. S. E. Slocum. B.E., Ph.D. Demy 8vo. 442 + xlii pages. Illustrated with diagrams, etc. 15/- net.

Dynamometers. Rev. Frederick John Jervis-Smith, M.A., F.R.S. Edited and amplified by Charles Vernon Boys, F.R.S. 118 Illustrations. Demy 8vo. 14/- net.

Contents. —Introduction. Friction. Planimeters. Friction Brakes. Water Brakes. Air Brake. Magnetic Brake Dynamometer. End Thrust Brakes. Historical. Transmission. Dynamometers. Torsion Power Measuring Machines. Torsion Power-Measuring Machines by different Inventors. The Cradle Dynamometer. Dynamometric Tests of Motor-Car Engines. Model Ship Dynamometers used in Aeronautics.

A Handbook of Testing. C. A. Middleton Smith, B.Sc., A.M.I.M.E., A.M.I.E.E. Professor of Engineering in the University of Hong Kong, late of East London College; Author of “Lectures on Suction Gas Plants,” etc. I. Materials. 2nd Edn. 14/- net. II. Prime Movers. In Preparation.

Mechanical Movements, Powers, Devices and Appliances. Gardner D. Hiscox, M.E. , Author of “Gas, Gasoline, and Oil Engines,” etc. Over 400 pages. 1646 Illustrations and Descriptive Text. Demy 8vo. 18/- net.

Mechanical Appliances. Supplementary Volume to Mechanical Movements. Gardner D. Hiscox, M.E. 400 pages. About 1000 Illustrations. Demy 8vo. 18/- net.

Mechanical Technology. G. F. Charnock, M.Inst.C.E., M.Inst.M.E. Demy 8vo. 650 pages. 12/6 net.

This work, designed chiefly for engineering students, deals in a comprehensive manner with the preparation and properties of the raw material, the production of castings by taking advantage of the property of fusibility, and the production of bars, plates, forgings, etc., by utilising the properties of malleability and ductility. It is perhaps the most complete manual on the subject in any language.

The Elements of Mechanics of Materials. A Text-Book for Students in Engineering Courses. C. E. Houghton, A.B., M.M.E. Demy 8vo. 10/6 net.

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Precision Grinding. A Practical Book on the Use of Grinding Machinery for Machine Men. H. Darbyshire. Pages viii + 162. Demy 8vo. 6/6 net.

Forging of Iron and Steel. A Text-Book for the use of Students in Colleges, Secondary Schools and the Workshop. W. Allyn Richards. Demy 8vo. 337 Illustrations. Price 7/6 net.

Contents. —Historic Use of Iron and Steel. Iron and Steel. Equipment. Fuel and Fires. Drawing Down and Upsetting. Bending and Twisting. Splitting, Punching, and Riveting. The Uses of Blacksmiths’ Tools. Welding. Electric, Autogenous and Thermit Welding. Brazing. Tool Steel. High Speed Tool Steel. Art Ironwork. Steam and Power Hammers. Calculations. Appendix. Index.

Water Softening and Treatment: Condensing Plant, Feed Pumps and Heaters for Steam Users and Manufacturers. W. H. Booth, F.G.S., M.Am.Soc.C.E. 2nd Edn. With Tables and many Illustrations. Demy 8vo. 9/6 net.

Dock and Lock Machinery. William Hunter, M.Inst.C.E. Demy 8vo. Illustrated.

Dies: Their Construction and Use for the Modern Working of Sheet Metals. Joseph V. Woodworth. 384 pages. Demy 8vo. 31/6 net.

Governors and the Governing of Prime Movers. W. Trinks, M.E. Demy 8vo. 22/6 net.

Shop Kinks. A book for Engineers and Machinists, showing Special Ways of doing Better, Cheap, and Rapid Work. Robert Grimshaw. 4th Edn. With 222 Illustrations. Demy 8vo. 24/- net.

Cams, and the Principles of their Construction. George Jepson, Instructor in Mechanical Drawing in the Massachusetts Normal School. Demy 8vo. 12/- net.

[17]

The Economic and Commercial Theory of Heat Power-Plants. Robert H. Smith, A.M.Inst.C.E., M.I.M.E., M.I.E.E. , etc. Prof. Em. of Engineering and Mem. Ord. Meiji. Numerous Diagrams. Royal 8vo. 24/- net.

Entropy: Or, Thermodynamics from an Engineer’s Standpoint, and the Reversibility of Thermodynamics. James Swinburne, M.Inst.C.E., M.I.E.E. , etc. Illustrated with Diagrams. Crown 8vo. 5/- net.

Compressed Air: Its Production, Uses and Applications. Gardner D. Hiscox, M.E. , Author of “Mechanical Movements Powers, Devices,” etc. 5th Edn. Revised and Enlarged. 665 pages. 540 Illustrations and 44 Air Tables. Demy 8vo. 25/- net.

Natural Sources of Power. Robert S. Ball, B.Sc., A.M.Inst.C.E. With 104 Diagrams and Illustrations. Ex. Crown 8vo. 7/6 net.

Pumps

The Efficiency of Pumps and Ejectors. E. C. Bowden-Smith, M.I.Mech.E. , etc. Late Egyptian Civil Service. Demy 8vo. Illustrated. 14/6 net.

Centrifugal Pumps. Louis C. Loewenstein, E.E., Ph.D. , and Clarence P. Crissey, M.E. 320 Illustrations. 26/- net.

Contents. —Theory of Centrifugal Pumps. Consumption of Power and Efficiency. The Calculation of Impeller and Guide Vanes. Design of Important Pump Parts. Types of Centrifugal Pumps. Testing of Centrifugal Pumps.

Iron, Steel, and other Metals

An Introduction to the Study of Physical Metallurgy. Walter Rosenhain, B.A., D.Sc., F.R.S. , Superintendent, Metallurgy Department of the National Physical Laboratory. With 32 Plates and 131 Illustrations in the Text. Demy 8vo. 12/6 net. ( See p. 49. )

[18]

The Basic Open-Hearth Steel Process. Carl Dichmann. Translated and Edited by Alleyne Reynolds. 2nd Imp. Demy 8vo. Numerous Tables and Formulæ. 12/6 net.

Iron and Steel. An Introductory Text-Book for Engineers and Metallurgists. (Outlines of Industrial Chemistry.) O. F. Hudson, M.Sc., A.R.C.S. , Lecturer on Metallography, Birmingham University, with a Section on Corrosion by Guy D. Bengough, M.A., D.Sc. , Lecturer in Metallurgy, Liverpool University; Investigator to the Corrosion Committee of the Institute of Metals. Demy 8vo. 8/- net.

Forging of Iron and Steel. W. Allyn Richards. Demy 8vo. 337 Illustrations. 7/6 net.

Contents. —Historic Use of Iron and Steel. Iron and Steel. Equipment. Fuel and Fires. Drawing Down and Upsetting. Bending and Twisting. Splitting, Punching and Riveting. The Uses of Blacksmiths’ Tools. Welding. Electric, Autogenous and Thermit Welding. Brazing. Tool Steel. High Speed Tool Steel. Art Ironwork. Steam and Power Hammers. Calculations. Appendix. Index.

Electro-Thermal Methods of Iron and Steel Construction. J. B. C. Kershaw, F.I.C. With an Introduction by Dr. J. A. Fleming, F.R.S. 239 + xxiii pages. 50 Tables and 92 Diagrams and Photographs. Demy 8vo. 9/- net.

Malleable Cast Iron. S. Jones Parsons, M.E. New Edn. 14/- net.

Contents. —Melting. Moulding. Annealing. Cleaning and Straightening. Design. Patterns. Inspection and Testing. Supplementary Processes. Application.

General Foundry Practice. Being a Treatise on General Iron Founding, Job Loam Practice, Moulding and Casting of Finer Metals, Practical Metallurgy in the Foundry, etc. William Roxburgh, M.R.S.A. With over 160 Figures and Illustrations. Extra Crown 8vo. 8/6 net.

Hardening, Tempering, Annealing and Forging of Steel. A Treatise on the Practical Treatment and Working of High and Low Grade Steel. Joseph V. Woodworth. With 201 Illustrations. Demy 8vo. 5th Edition. 21/- net.

Welding and Cutting of Metals by the aid of Gases or Electricity. Dr. L. A. Groth. Ex. Crown 8vo. 8/6 net.

The Precious Metals: Comprising Gold, Silver, and Platinum. Thomas K. Rose, D.Sc. Ex. Crown 8vo. 7/6 net.

[19]

Motor-Cars and Engines

Text-Book of Motor-Car Engineering. A. Graham Clarke, M.I.A.E., A.M.I.M.E.

Vol. I. Construction. Demy 8vo. 15/- net.

Contents. —The General Principles and Construction of the Petrol Engine. Details of Engine Construction. Petrol. Fuels other than Petrol. Carburetters and Carburation. Thermodynamics of the Petrol Engine. Horse-power. Mechanical (Thermal and Combustion Efficiencies). The Principles and Construction of Coil and Accumulator Ignition. Magneto Ignition. Engine Control Systems. Engine Cooling Systems. Crank Effort Diagrams, Clutches and Brakes. Change-Speed Gears. Transmission Gear. Steering Gears. Lubricants. Lubrication. Ball and Roller Bearings. Chassis Construction. General Principles of the Steam Car. Steam Engines and Condensers. Steam Generators and Pipe Diagrams. The Electric Car. Materials used in Motor-Car Construction. Syllabus of City and Guilds of London Institute in Motor-Car Engineering. Examination Papers. Physical Properties of Petrols. Mathematical Tables and Constants.

Vol. II. Design. 16/- net.

Contents. —Introduction. Materials of Construction. General Considerations in Engine Design. Power Requirements. Determination of Engine Dimensions. Cylinders and Valves. Valve Gears. Pistons, Gudgeons, and Connecting Rods. Crank-shafts and Fly-wheels. The Balancing of Engines. Crank-cases and Gear-boxes. Engine. Lubrication and Cooling Arrangements. Inlet, Exhaust and Fuel Piping. Clutches and Brakes. Gearing. Transmission Gear. Frames, Axles and Springs. Torque and Radius Rods. Steering Gears.

Henslowe’s Motor Dictionary. Compiled by Leonard P. Henslowe. English-French, French-English. Tables of British and Metric Units of Measurement.

Aeronautics

Airscrews. A. Fage, A.R.C.Sc., D.I.C. , etc. Aerodynamics Department, The National Physical Laboratory. Cr. 4to. Fully illustrated. 34/- net.

A Primer of Air Navigation. H. E. Wimperis, M.A. Author of “The Internal Combustion Engine.” Cr. 8vo. Fully Illustrated. 8/6 net.

The Resistance of the Air and Aviation. Experiments conducted at the Champ-de-Mars Laboratory, by G. Eiffel . 2nd Edn. Revised and Enlarged. Translated by Jerome C. Hunsaker , Assistant Naval Constructor United States Navy. Over 130 Illustrations and Diagrams. Royal 4to. 42/- net.

Dynamics of Mechanical Flight. Sir George Greenhill , late Professor of Mathematics in the R.M.A., Woolwich. Demy 8vo. 6/- net.

[20]

Aircraft in Warfare: The Dawn of the Fourth Arm. F. W. Lanchester, M.Inst.C.E., M.Inst.A.E. , Member Advisory Committee for Aeronautics. With Introductory Preface by Maj.-Gen. Sir David Henderson, K.C.B. Medium 8vo. 12/6 net.

Aerial Flight. F. W. Lanchester.

Vol. I. Aerodynamics. Demy 8vo. 21/- net. 4th Edn. Revised. 460 pages. 160 Illustrations.

Contents. —Fluid Resistance and Its Associated Phenomena. Viscosity and Skin Friction. The Hydronamics of Analytical Theory. Wing Form and Motion in the Periptery. The Aeroplane. The Normal Plane. The Inclined Aeroplane. The Economics of Flight. The Aerofoil. On Propulsion, the Screw Propeller, and the Power Expended in Flight. Experimental Aerodynamics.

Vol. II. Aerodonetics. Demy 8vo. 21/- net. 2nd Edition. Revised. 450 pages. 208 Illustrations.

Contents. —Free Flight, General Principles and Phenomena. The Phugoid Theory. The Equations of the Flight Path. The Flight Path Plotted. Elementary Deductions from the Phugoid Theory. Stability of the Flight Path as affected by Resistance and Moment of Inertia. Experimental Evidence and Verification of the Phugoid Theory. Lateral and Directional Stability. General Conclusions. Soaring. Experimental Aerodonetics. Appendices on the Theory and Application of the Gyroscope. The Flight of Projectiles, etc.

The Flying Machine from an Engineering Point of View. Together with a Discussion concerning the Theory of Sustentation and Expenditure of Power in Flight. F. W. Lanchester, M.Inst.C.E. Demy 8vo. 5/- net.

Stability and Equilibrium of Floating Bodies. Bernard C. Laws, B.Sc., A.R.C.Sc., A.M.Inst.C.E., M.I.N.A. 130 Illustrations. Demy 8vo. 10/6 net.

Marine Engineering.

The Gyroscopic Compass. (“The Engineer” Library.) T. W. Chalmers, B.Sc. , etc. Demy 8vo. Fully illustrated. 11/- net.

The Design of Marine Engines and Auxiliaries. 110 Illustrations and Folding Plans. Edward M. Bragg, S.B. Medium 8vo. 12/6 net.

Contents. —Determination of Cylinder Dimensions. Design of Engine Parts. Engine Balancing. Condensers and Air Pumps. Turning Engines and Reversing Engines.

Hot Bulb Oil Engines and Suitable Vessels. Walter Pollock. Demy 8vo. 42/- net. ( See p. 10. )

Stability and Equilibrium of Floating Bodies. Bernard C. Laws, B.Sc., A.R.C.Sc., A.M.Inst.C.E., M.I.N.A. 130 Illustrations. Demy 8vo. 10/6 net.

Contents. —General Considerations. Ships. Amsler’s Integrator, Submarines. Floating Docks. Aircraft. Caissons. Index.

[21]

Practical Design of Marine Single and Double-Ended Boilers. John Gray ( See p. 12. )

Ship Form, Resistance, and Screw Propulsion. G. S. Baker, M.Inst.Naval Architects. Medium 8vo. 2nd Edn. Treated from the practical point of view for the use of naval architects, engineers, and draughtsmen. 16/-net.

Contents. —Nomenclature. Steam Line Motion. Skin Friction Resistance. Eddy-making. Waves and Wave-making. Ship Model Experiments. Dimensions and Form. Curve of Areas. Shape and Fineness of Ends, with Parallel Body. Position of Maximum Section, and Relative Length of Entrance and Run. Midship Section Area and Shape. Level Lines and Body Plan Sections. Racing and other High Speed Vessels. Appendages. Restricted Water Channels. Screw Propeller Nomenclature and Geometry. Theories of the Screw Propeller Nomenclature and Geometry. Theories of the Screw Propeller. The Elements of Propulsion. Screw Propellers in Open Water. Propeller Blades. Hull Efficiency, Wake and Thrust Deduction. Main Engines. Cavitation. Measured Mile Trials.

The Shipbuilding Industry. Roy W. Kelly and Frederick J. Allen. Preface by Charles M. Schwab. Illustrated. Crown 8vo. 21/- net.

Cold Storage, Heating and Ventilating on Board Ship. Sydney F. Walker, R.N. Extra Crown 8vo. 18/- net.

The Elements of Graphic Statics and of General Graphic Methods. W. L. Cathcart, M.Am.Soc.M.E. , and J. Irvin Chaffee, A.M. 159 Diagrams. 21/6 net.

This book is designed for students of marine and mechanical engineering and naval architecture. It reviews the principles of graphics and their application both to frame structures and to mechanism.

Handbook for the Care and Operation of Naval Machinery. Commander H. C. Dinger , United States Navy. ( See p. 57. ) 3rd Edition. 21/- net.

Turbines Applied to Marine Propulsion. Stanley J. Reed, A.M.Inst.C.E. Crown 4to. Over 100 Illustrations and Diagrams. 2nd Edn. Revised. 16/- net.

Contents. —General Properties of Steam—Two-Stage Rateau Turbine Nozzles. The General Design and Arrangement of Turbines. The Design and Construction of Parsons Turbine. The Design and Construction of Curtis Turbine. Combined or Mixed Turbines. Steam Thrust of Reaction Turbines. Superheated Steam. Cavitation. Relative Effect of High Vacua with Turbines and Reciprocating Engines. Utilisation of Auxiliary Engine Exhaust in the Turbines. Astern Turbines.

Hydraulics and Turbines.

Ship Form, Resistance, and Screw Propulsion.

( See above. )

[22]

Stability and Equilibrium of Floating Bodies. Bernard C. Laws, B.Sc., A.R.C.Sc., A.M.Inst.C.E., M.I.N.A. ( See p. 20. )

Hydraulics and its Applications. A Text-Book for Engineers and Students. A. H. Gibson, D.Sc., M.Inst.C.E. 2nd Edn. Revised and Enlarged. Demy 8vo. 24/- net.

“One of the most satisfactory text-books on Hydraulics extant.”— Mechanical World.

Hydraulics, Text-book of. Including an Outline of the Theory of Turbines. L. M. Hoskins , Professor of Applied Mathematics in the Leland Stanford Junior University. Numerous Tables. Demy 8vo. 16/- net.

Hydraulics of Pipe Lines. W. F. Durand , Professor of Mechanical Engineering, Leland Stanford University, California. Demy 8vo. Illustrated.

Water Hammer in Hydraulic Pipe Lines. Being a Theoretical and Experimental Investigation of the Rise or Fall of Pressure in a Pipe Line, caused by the gradual or sudden closing or opening of a Valve; with a Chapter on the Speed Regulation of Hydraulic Turbines. A. H. Gibson, D.Sc., M.Inst.C.E. 2nd Edn. Crown 8vo. 8/- net.

Conveyance and Distribution of Water for Water Supply. Aqueducts, Pipe Lines and Distributing Systems. Edward Wegmann, C.E. A Practical Treatise for Water-Works Engineers and Superintendents. Medium 8vo. 367 Illustrations. 8 Plates. 663 pages. 32/6 net.

Contents. —Part I: Water Consumption and Hydraulic Formulas. Consumption of Water. Flow of Water in Aqueducts. Flow of Water through Orifices and Pipes. Part II: Design and Construction. Wooden Pipes. Cast Iron Pipes. Wrought Iron and Steel Pipes. Pipes of Vitrified Stone Ware, Cement, and Concrete. Stresses in Water Pipes. Flexible Pipe. Joints. Submerged Pipes. Gates and Valves. Hydrants. Intake Pipes and Tunnels. Aqueducts. Description of Aqueducts. Service Reservoirs. Stand Pipes. Cylindrical Tanks of Wood or Steel. Fire Protection. High Pressure Water Systems. Distribution Systems. Part III: Maintenance and Operation. Service Pipes and Connections. Cleaning Aqueducts and Water Mains. Thawing Frozen Pipes and Hydrants. Leakage from Aqueducts, Mains, and Service Pipes. Durability of Wooden and Metal Pipes. Electrolysis. Tools and Machines for Pipe Work. Detection and Prevention of Waste of Water. Pitot Tube Gauging. Water Meters. Recording Instruments. Appendix I: Standard Specifications of American Water Works Association for “Cast Iron Water Pipe and Special Castings.” Tables of Wrought Iron, Steel, and Universal Cast Iron Pipes. Appendix II: Standard Specifications of American Water Works Association for Hydrant and Valves. Appendix III: Standard Specifications of Association of American Steel Manufacturers for “Structural and Boiler Steel.” Appendix IV: Special Fire Protection for Buildings. Appendix V: Fire Steam Tables prepared by National Board of Fire Underwriters. Index.

[23]

Hydraulic Tables for the Flow of Water in Circular Pipes under Pressure, Timber Flumes, Open Channels and Egg-shaped Conduits. Joseph H. Harper, C.E. Crown 8vo. 192 pages. With 22 Charts. 8/6 net.

Water Pipe and Sewage Discharge Diagrams. T. C. Ekin, M.Inst.C.E., M.I.M.E. ( See p. 31. )

Hydroelectric Developments and Engineering. A Practical and Theoretical Treatise on the Development, Design, Construction, Equipment and Operation of Hydroelectric Transmission Plants. Frank Köester. 42/- net.

Modern Turbine Practice and Water Power Plants. With Terms and Symbols used in Hydraulic Power Engineering. John Wolf Thurso , Civil and Hydraulic Engineer. Royal 8vo. 21/- net.

Mining.

Electric Mine Signalling Installations. A Practical Treatise on the Fitting-up and Maintenance of Electrical Signalling Apparatus in Mines. G. W. Lummis Paterson. Crown 8vo. 140 Illustrations. 5/- net. ( See p. 34. )

Physics and Chemistry of Mining and Mine Ventilation. A Practical Handbook. Joseph J. Walsh. Extra Crown 8vo. Second Revised and Enlarged Edition. 12/6 net.

Contents. —Matter. Motion, Velocity and Force. Gravitation. Liquids and Liquid Pressure. Heat. Gases. The Barometer. Specific Heat. Air Analysis. Mine Ventilation. Formulas. Mine Fires.

Application of Electric Power to Mines and Heavy Industries. W. H. Patchell, M.Inst.C.E., M.I.M.E., M.Am.I.E.E. Demy 8vo. 12/6 net.

Contents. —Electricity in Mines. Cables. Coal Cutters and Underground Details. Haulage Gears. Rating of Haulages. Winding Engines. Types of Electric Winders. Ventilation and Air Compressing. Pumping. Rolling Mills. Machine Tools and Cranes, Electric Welding and Furnaces.

[24]

Railway Engineering.

Railway Maintenance Engineering. With Notes on Construction. William H. Sellew, A.S.M.E. , Author of “Steel Rails, their History, Properties, Strength and Manufacture,” Member of the American Railway Engineering Association. Extra Crown 8vo. 194 Illustrations. 19/- net.

Contents. —Engineering. Land. Grading. Bridges, Trestles and Culverts. Ties. Rails. Other Track Material. Ballast. Maintaining Track and Right of Way. Station and Roadway Buildings. Water Stations. Fuel Stations. Shops and Engine Houses. Icing Stations. Signals and Interlockers.

Locomotive Valves and Valve Gears. J. H. Yoder and G. B. Wharen . Fully Illustrated. Large 8vo. 14/- net.

Contents. —Common D Slide Valve. Valve Events. Description of Slide Valve and Its Seat. Special Designs of Slide Valves. Balancing the Slide Valve. The Piston Valve. Piston Valve for Balanced Compound Locomotives. The Stephenson Valve Gear. Effects of Raising or Lowering the Link. The Walschaert Valve Gear. Construction and Development. Description of Parts. Operating Parts of the Gear. Relative Crank Pin and Piston Positions for Different Valve Events at Full Forward Gear. Relative Crank Pin and Positions for Different Valve Events at the Running Cut-off Position. Distortions of the Walschaert Valve Gear. Layout of Walschaert Gear. Baker Locomotive Valve Gear. The Young Locomotive Valve, Valve Gear and Reverse Gear. The Gooch Stationary Link. The Allen Valve Gear. Effects of Altering the Valve and Its Events. Locomotive Valve Setting. Stephenson Gear. Walschaert Gear. Rules for Valve Setting. Baker Locomotive Valve Gear. Summary. The Indicator Diagram and its Application. Application of the Diagram. Horse Power of Locomotives. Tractive Force of Two-cylinder Compound Locomotives. Tractive Force of Mallet Articulated Compound Locomotives. Classification of Locomotives.

Oil Fuel Equipment for Locomotives. Alfred H. Gibbings, A.M.Inst.C.E. Demy 8vo. Tables. 8/6 net.

Steel Rails: Their History, Properties, Strength and Manufacture. With Notes on the Principles of Rolling Stock and Track Design. William H. Sellew. 361 Illustrations. 33 Folding Plates. 576 pages. 52/- net.

Contents. —Development of the Present Section. Pressure of the Wheel on the Rail. Supports of the Rail. Stresses in the Rail. Strength of the Rail. Influence of Detail of Manufacture. Rail Specifications. Appendix.

Solution of Railroad Problems by the Slide Rule. E. R. Cary, M.Am.S.C.E. 43 Diagrams. 4/6 net.

The Practical Railway Spiral. With short Working Formulas and Full Tables of Deflection Angles. Complete Notes of Illustrative Examples. L. C. Jordan, B.S. 6/- net.

The Transition Spiral. A. L. Higgins, A.R.C.S. Crown 8vo. Illustrated. About 7/6 net.

[25]

Single-Phase Electric Railways. E. Austin. Demy 4to. 346 Illustrations. 21/- net. ( See p. 33. )

Reinforced Concrete Railway Structures. J. D. W. Ball, A.M.Inst.C.E. Demy 8vo. 9/- net. (Glasgow Text-Books of Civil Engineering.)

Contents. —Preliminary Considerations. Bending Stresses. Shear Stress. Floors and Buildings. Foundations and Rafts. Retaining Walls. Bridges. Arched Bridges. Sleepers, Fence Posts, etc. Summary of Notation.

The Design of Simple Steel Bridges. P. O. G. Usborne , late R.E. 12/6 net.

Contents. —Definitions. Bending Moments. Moments of Flexure. Moments of Resistance. Shear Deflection. Solid Beams and Examples. Struts and Ties. Rivets and Joints. Rolling Loads. Bending Moments, Shear Stresses. Loads. Plate Girders. Bridge Floors. Railways, Roads. Principles of Bridge Design. Plate Girders. Parallel Braced Girders. Braced Girders (2). Shop Practice and General Details.

Reinforced Concrete Bridges. Frederick Rings, M.S.A., M.C.I. ( See p. 26. )

Railway Signal Engineering (Mechanical). Leonard P. Lewis , of the Caledonian Railway, Glasgow. Illustrated. Demy 8vo. 2nd Edition. (Glasgow Text-Books of Civil Engineering.) 14/- net.

Contents. —Introduction. Board of Trade Rules. Classes and Uses of Signals. Constructional Details of Signals. Point Connections. Interlocking Apparatus. Signal Box Arrangements. Miscellaneous Apparatus. Signalling Schemes. Interlocking Tables, Diagrams, etc. Methods of Working Trains. Appendix.

Railway Terms. Spanish-English, English-Spanish, Dictionary of. André Garcia. 12/6 net.

The Railway Locomotive: What it is, and Why it is What it is. Vaughan Pendred, M.I.M.E., M.I. and S.Inst. Extra Crown 8vo. 7/6 net.

Earthwork in Railway Engineering. J. W. P. Gardner, M.I.C.E. Demy 8vo.

The Field Engineer. William Findlay Shunk. 21st Edn. Revised and Enlarged. Foolscap 8vo. Leather. 14/- net.

[26]

Reinforced Concrete and Cement.

A Treatise on Cement Specifications. Including the General Use, Purchase, Storage, Inspection and Test Requirements of Portland, Natural, Puzzolan (slag), and Silica (sand) Cement, and Methods of Testing and Analysis of Portland Cement. Jerome Cochran, B.S., C.E., M.C.E. , Author of “Inspection of Concrete Construction,” etc. Demy 8vo. 100 pages. 6/- net.

Reinforced Concrete Railway Structures. J. D. W. Ball, A.M.Inst.C.E. ( See p. 25. )

Reinforced Concrete Bridges. Frederick Rings, M.S.A., M.C.I. Over 300 Illustrations and Diagrams. Imperial 8vo. 21/- net.

Contents. —List of Symbols. Introductory. Bending Moments, Stresses and Strains. Loads on Bridges and External Stresses. Culverts, Coverings, Tunnels, etc. Beam Bridges. Calculation of Girder Bridges. Examples of Girder Bridges. Design of Arched Bridges and Abutments. Theory of the Arch. Examples of Arched Bridges. Formulæ, Notes, Schedules and other useful information.

Reinforced Concrete Diagrams. J. Williamson. Imperial 8vo. 48 pages. 18 Diagrams. 12/- net.

A Manual of Cement Testing. For the use of Engineers and Chemists in Colleges and in the Field. W. A. Richards, B.S. in M.E. , and H. B. North, D.Sc. 137 + x pages. 54 Diagrams. Demy 8vo. 11/- net.

Manual of Reinforced Concrete. 3rd Edn. Re-written and Enlarged, with the addition of much useful information and many New Tables and Diagrams. Charles F. Marsh, M.Inst.C.E., M.Am.Soc.E., M.I.Mech.E. and William Dunn, F.R.I.B.A. Pocket size. Limp Cloth. 500 pages. 79 Tables of Data and 191 Diagrams. 14/- net.

A Concise Treatise on Reinforced Concrete. A Companion to “The Reinforced Concrete Manual.” Charles F. Marsh, M.Inst.C.E., M.Am.Soc.E., M.I.Mech.E. Demy 8vo. 12/6 net.

Properties and Design of Reinforced Concrete. Instructions, Authorised Methods of Calculation, Experimental Results and Reports by the French Government Commissions on Reinforced Concrete. Nathaniel Martin, A.G.T.C., B.Sc., A.M.Inst.C.E. , former Lecturer on Reinforced Concrete in the Royal West of Scotland Technical College. 8/- net.

[27]

Reinforced Concrete Compression Member Diagram. A Diagram giving the loading size and reinforcements for compression members according to the data and methods of Calculation recommended in the Second Report of the Joint Committee on Reinforced Concrete. Charles F. Marsh, M.Inst.C.E., M.Am.Soc.E., M.I.Mech.E. In Cloth covers, mounted on Linen, 5/- net. Unmounted, 3/6 net.

Cement, Concrete and Bricks. A. B. Searle. ( See p. 43. )

Civil Engineering, Building Construction, etc.

Civil Engineers’ Pocket Book. A Reference-Book for Engineers, Contractors and Students, containing Rules, Data, Methods, Formulæ and Tables. A. I. Frye, S.B., M.Am.S.C.E. 26/- net.

Some Modern Methods of Ventilation. With special reference to Public Buildings: Standards of Ventilation, Design of Ducts, Selection of Fans, Washers, and Heaters, Specifications, Test Forms, and Specimen Schedules for Designers. Ronald Grierson, A.M.I.Mech.E., A.M.I.E.E. Demy 8vo. 8/6 net.

Contents. —The General Principles of Ventilation. The Apparatus Employed Considerations to be observed in the Design of the Air Circuit. Ducts and Registers. Fans. Air Washing and Humidifying Plant (Filters). Heaters. Ozone. Instruments. Guarantees for Complete Installations. Tests. Motor Drives. Suggested Schedules for Designing Complete Installation. Purchase Specifications. The Application of Wet Air Filters to the Cooling of Electrical Machinery.

A Treatise on Cement Specifications. Jerome Cochran, B.S., C.E., M.C.E. ( See p. 26. )

The Principles of the Application of Power to Road Transport. H. E. Wimperis, A.M.Inst.C.E., A.M.I.E.E. Illustrated. Crown 8vo. 5/- net.

The Design of Simple Steel Bridges. P. O. G. Usborne , late R.E. ( See p. 25. )

[28]

The Elements of Structural Design. Horace R. Thayer. Medium 8vo.

Vol. I. Elements. 18/- net.

Vol. II. Design of Simple Structures. Discusses the design of simple structures, such as beams, girders, viaducts, trusses, buildings, stand pipes, and elevated tanks. 500 pages. 16/- net.

Reinforced Concrete Railway Structures. J. D. W. Ball, A.M.Inst.C.E. ( See p. 25. )

Practical Design of Steel-Framed Sheds. Albert S. Spencer. Royal 8vo. 12/- net.

Contents. —The Resistance of Steel-Framed Sheds to Wind Forces. The Standardisation of Shed Members and Foundations. Sheeted Sheds. Standard Sections for Sheds with Open Sides and Gables. Sheeted Roofs. Standardising of Shed Members and Foundations for Sheds having Slated Roofs and Brick-panelled Walls. Standard Sections for Sheds with Open Sides and Gables. Slated Roofs. Standard Stresses and Sections for Roof Principals. External Coverings. Gutters, Pipes, Ventilation, Doors, Windows and Skylights.

A Study of the Circular-Arc Bow-Girder. A. H. Gibson, D.Sc., A.M.Inst.C.E., M.I.Mech.E. , and E. G. Ritchie, B.Sc. 10/6 net.

Masonry Applied to Civil Engineering. A Practical Treatise on the Design and Construction of Engineering Works in Stone and Heavy Concrete. F. Noel Taylor, M.Inst.C.E. , Author of “A Manual of Civil Engineering Practice.” 242 pages. Demy 8vo. 7/6 net.

Contents. —Stones used in Constructional Work. General Remarks upon Masonry. Retaining Walls and Earth Pressures. Dock, River, Canal and Sea Walls. Masonry Dams. Masonry Bridges and Arches. Masonry Towers, etc. Monolithic and Block Concrete Construction. Shoring and Underpinning. Index.

Foundations and Machinery Fixing. Francis H. Davies, A.M.I.E.E. 2/6 net.

Contents. —The Functions of Foundations, Nature of Soils and Piling. Trial Bores. Design of Foundations. Design. The Proportions of Foundations for Engines, Turbines and Dynamo. Electric Machinery. Materials for Foundations. Holding Down Bolts and Anchor Plates. Excavation. Construction of Foundations. Vibration: Its Causes and Effects. Vibration. Methods of Isolating Machinery. The Fixing of Electric Motors.

Graphical Determination of Earth Slopes, Retaining Walls and Dams. Charles Prelini, C.E. , Author of “Tunnelling.” Demy 8vo. 8/6 net.

[29]

Rainfall, Reservoirs and Water Supply. Sir Alexander Binnie, M.Inst.C.E., etc. ( See p. 30. )

Timber. J. E. Baterden, Assoc.M.Inst.C.E. Extra Crown 8vo. 7/6 net.

Pricing of Quantities. Showing a Practical System of Preparing an Estimate from Bills of Quantities. George Stephenson , Author of “Repairs,” “Quantities,” etc. Extra Crown 8vo. 5/- net.

Building in London. A Treatise on the Law and Practice affecting the Erection and Maintenance of Buildings in the Metropolis. Horace Cubitt, A.R.I.B.A. , etc. Illustrated, with Diagrams. Royal 8vo. 31/6 net.

Theory and Practice of Designing. A progressive course of instruction in various branches of structural design. With numerous Illustrations. Henry Adams, M.Inst.C.E., M.I.M.E. 7/6 net.

“… We recommend it heartily, alike as a text-book or a handy work of reference.”— Mechanical Engineer .

Surveying, etc.

Adjustment of Observations by the Method of Least Squares. With Application to Geodetic Work. Professor Thomas Wallace Wright, M.A., C.E. , and John Fillmore Hayford, C.E. , Chief of the Computing Staff U.S. Coast and Geodetic Survey. With Tables. 2nd Edn. Demy 8vo. 30/- net.

Surveying and Field Work. J. Williamson, A.M.Inst.C.E. Demy 8vo. 9/- net.

Contents. —Surveying. Fundamental Principles. Chain Surveying Instruments—Chain Surveying. Field Operations—Chain Surveying. Running a Survey Line—Chain Surveying. Arrangement of Survey Lines—Chain Surveying. Errors—Chain Surveying. Special Problems. Plotting the Plan. Compass and Sextant Surveying. The Theodolite. Traverse Surveying with the Theodolite. Plotting a Traverse Survey by Angle and Distance. Plotting Traverse Survey by Co-ordinate or Latitude and Departure Method. Triangulation. Some Survey, Traverse and Triangulation Problems. Levelling. Errors in Levelling. Sections, Contours, etc. Setting out Curves, etc. Calculation of Areas. Calculation of Earthwork Quantities—Adjustment of Instruments. Appendix. Geometric and Trigonometric Formulæ. Index.

[30]

Practical Surveying. For Surveyors’ Assistants and Students. Ernest McCullough, C.E. , Member of the American Society of Civil Engineers. Extra Crown 8vo. 229 Illustrations. 12/- net.

The Transition Spiral. A. L. Higgins, A.R.C.S. Crown 8vo. Illustrated. About 7/6 net.

Municipal Engineering.

The Efficiency of Pumps and Ejectors. E. C. Bowden-Smith, M.I.Mech.E. , etc. Late Egyptian Civil Service. Demy 8vo. Illustrated. ( See p. 17. ) 14/6 net.

Water Purification and Sewage Disposal. Dr. J. Tillmans , Director of the Chemical Department of the Municipal Institute of Hygiene, Frankfort-on-Maine. Translated by Hugh S. Taylor, M.Sc. 144 + xv pages. Demy 8vo. 9/- net.

Sewage Disposal Work: Design, Construction and Maintenance. Being a Practical Guide to Modern Methods of Sewage Purification. Hugh P. Raikes, M.Inst.C.E. Demy 8vo. 16/- net.

The Encyclopædia of Municipal and Sanitary Engineering. Edited by W. H. Maxwell, A.M.Inst.C.E. , Borough and Waterworks Engineer, Tunbridge Wells Corporation, etc. In one volume. Cloth. 42/- net.

Rainfall, Reservoirs and Water Supply. Sir Alexander Binnie. 9/- net.

Contents. —Rainfall. Average. Fluctuations. Probable Average. Flow from the Ground. Intensity of Floods. Evaporation. Quantity and Rate per Head. Quality, Hardness, etc. Impurities. Filtration. Sources of Supply. Gravitation versus Pumping. Rivers and Pumping Works. Drainage Areas. Deductions from Rainfall. Compensation. Capacity of Reservoirs. Sites of Reservoirs. Puddle Trenches. Concrete Trenches. Base of Embankment. Reservoir Embankments. Puddle Wall. Formation of Embankment. Masonry Dams. Reservoir Outlets. Pipes through Embankment. Culvert under Embankment. Flow through Culverts. Valve Pit. Central Stopping. Tunnel Outlets. Syphon Outlets. Flood or Bye-channel. Waste Watercourse and Waste Weir. Aqueducts. Conduits. Pipes. Service Reservoir. Distribution. Valves. Meters. House Fittings. Index.

Conveyance and Distribution of Water for Water Supply. Edward Wegmann, C.E. Medium 8vo. 367 Illustrations. 8 Plates. 26/- net. (See page 22.)

Refuse Disposal and Power Production. W. F. Goodrich. Demy 8vo. 16/- net.

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Small Dust Destructors for Institutional and Trade Refuse. W. F. Goodrich. Demy 8vo. 4/- net.

British Progress in Municipal Engineering. William H. Maxwell, A.M.Inst.C.E. Super-Royal 8vo. 6/- net.

Water Pipe and Sewage Discharge Diagrams. T. C. Ekin, M.Inst.C.E., M.I.Mech.E. Folio. 6/- net.

These diagrams and tables with accompanying descriptive letterpress and examples are based on Kutter’s formula with a coefficient of roughness of 0·013 and give the discharges in cubic feet per minute of every inch diameter of pipe from 3 to 48 inches when running full on inclinations from 1 to 15 per 1000.

Water: its Purification and Use in the Industries. W. W. Christie, M.Am.S.M.E. , etc. 230 pages. 79 Illustrations. 12/6.

Modern Sanitary Engineering. Gilbert Thomson, M.A., M.Inst.C.E. Part I. House Drainage . Demy 8vo. Vol. I. 2nd Edition. (Glasgow Text-Books of Civil Engineering.) 16/- net.

Contents .—Introductory. The Site and Surroundings of the House. The General Principles of Drainage Design. Materials for Drains. The Size of Drains. The Gradient of Drains. Drain Flushing Traps: Their Principle and Efficacy. Traps: Their Number and Position. “Disconnections.” Intercepting Traps and Chambers. Inspection Openings and Manholes. Soil, Waste and Connecting Pipes. Water Closets. Flushing Cisterns and Pipes. Urinals. Baths. Lavatory Basins. Sinks, Tubs, etc. Trap Ventilation. Designing a System of Drainage. Buildings of Special class. Test and Testing. Sanitary Inspections. Sewage Disposal for Isolated Houses. Index.

Part II. Sewerage. Demy 8vo. 18/- net.

Contents .—General Principles of Design. Evolution of a Scheme. Size of Sewers. Quantity of Sewage. Velocity of Flow. Flushing. Excavations. Construction of Pipe Sewers. Construction of Built Sewers. Sea Outfall Sewers. Sewer Ventilation. Manholes. Lampholes. Street Gullies. Inverted Syphons. Raising Sewage. Storm Overflows. Connection to House Drains. Specifications and Schedules for Sewerage Work. Drainage and Sewerage of Housing Schemes. Index.

Town Planning in Madras. H. V. Lanchester, F.R.I.B.A. , etc. 12/6 net.

Contents .—The Ethics of Town Planning. Historical Outlines of Town Planning. The Civic Survey. Economic Studies. Tradition and City Development. City Life and Housing. Commerce and Traffic. The Technique of City Development. Indian and European Cities. Problems in India. The Uses of the Town Planning Act. Madras City. The Improvement of Madras City.

Irrigation and Water Supply.

Water Purification and Sewage Disposal. Dr. J. Tillmans . ( See p. 30. )

Rainfall, Reservoirs and Water Supply, Sir Alexander Binnie, M.Inst.C.E. ( See p. 30. )

[32]

Irrigation: Its Principles and Practice as a Branch of Engineering. Sir Hanbury Brown, K.C.M.G., M.Inst.C.E. 2nd Edn. Revised. Demy 8vo. 16/- net.

Contents. —Irrigation and its Effects. Basin Irrigation. Perennial Irrigation and Water “Duty.” Sources of Supply. Dams and Reservoirs. Means of Drawing on the Supply. Methods of Construction. Means of Distribution. Masonry Works on Irrigation Canals. Methods of Distribution of Water. Assessment of Rates and Administration. Flood Banks and River Training. Agricultural Operations and Reclamation Works. Navigation. Appendices. Index.

Irrigation Works. The “Vernon Harcourt” Lectures of 1910. Sir Hanbury Brown, K.C.M.G., M.Inst.C.E. Demy 8vo. Stiff Paper Cover. 1/- net.

Agriculture and Irrigation. Kinsley D. Doyle. Demy 8vo. 288 pp. 19/- net.

Contents. —The Soil. Fertilizers. Irrigation. Wells and Pumping. Dry Farming and Economics. Pastures, Natural and Artificial. Notes on Forests, Cattle, Pigs and Carobs. Runs and Farms for Sheep and Ostriches. Cereals. Apples. Asparagus, Onions and Potatoes. Citrus Orchards. Grapes, Walnuts and Pistachio Nuts. Some Special Industries. Some Tropical Fruit. Tropical Plantations. Planting and Sowing for Oil. Tropical Agriculture.

The Practical Design of Irrigation Works. W. G. Bligh, M.Inst.C.E. New and Enlarged Edition in Preparation.

Notes on Irrigation Works. N. F. Mackenzie, Hon. M.A., Oxon.; M.Inst.C.E. ; lately Under-Secretary for Irrigation to the Government of India. Demy 8vo. 7/6 net.

Telegraphy and Telephony.

Telegraph Engineering. For practising Telegraph Engineers and Engineering Students. It presents in a logical manner the subject of modern Land and Submarine Telegraphy from an Engineering viewpoint. E. Hausmann, E.E., Sc.D. Demy 8vo. 192 Illustrations. 12/6 net.

The Propagation of Electric Currents in Telephone and Telegraph Conductors. J. A. Fleming, M.A., D.Sc., F.R.S. , Pender Professor of Electrical Engineering in the University of London. 3rd Edn. Revised. Demy 8vo. 21/- net.

Contents. —Preface. Mathematical Introduction. The Propagation of Electro-Magnetic Waves along Wires. The Propagation of Simple Periodic Electric Currents in Telephone Cables. Telephony and Telegraphic Cables. The Propagation of Currents in Submarine Cables. The Transmission of High-Frequency and Very Low-Frequency Currents along Wires. Electrical Measurements and Determination of the Constants of Cables. Cable Calculations and comparison of Theory with Experiment. Loaded Cables in Practice.

[33]

Toll Telephone Practice. J. B. Theiss, B.S., LL.B. , and Guy A. Joy, B.E. With an Introductory Chapter by Frank F. Fowle, S.B. 14/- net.

Contents. —Rural Telephone Equipment. Toll Cut-in Stations. Toll Positions at a Local Switchboard. Toll Switching Systems. Small Toll Switchboards. Multiple-Drop Toll Switchboards. Multiple-Lamp Toll Switchboards. Toll Connections to Local Automatic Systems. Supervisory Equipment and Toll Chief Operator’s Desk. Toll Wire Chief’s Desk. Simplex Systems. Composite Systems. Phantom Lines. Test and Morse Boards. Small Test Panels. Line Construction. Electrical Reactions in Telephone Lines. Cross and Talk Inductive Disturbances. Methods of Testing. Toll Line Maintenance. The Telephone Repeater.

Radio-Telegraphy. C. C. F. Monckton, M.I.E.E. With 173 Diagrams and Illustrations. Extra Crown 8vo. 7/6 net.

Radiographic Technique. T. Thorne Baker, F.C.S., F.R.P.S., A.I.E.E. Demy 8vo. 208 pp. Illustrated. 15/-.

Contents. —The Scope of X-Ray Work. The Photographic Plate. The Storage and Handling of Plates. Intensifier Screens. Fluoroscopic Examination. Localisation by Radiography. The Dark Room and its Equipment. Intensification and Reduction. The Technique of the Photographic Print. Industrial Applications of the X-Rays. Analysis with the X-Rays. Appendix.

The Telegraphic Transmission of Photographs. T. Thorne Baker, F.C.S., F.R.P.S., A.I.E.E. With 66 Illustrations and Diagrams. Crown 8vo. 2/6 net.

Telegraphy, Aeronautics and War. Charles Bright, F.R.S.E., M.Inst.C.E. , etc., Author of “Submarine Telegraphs,” “Imperial Telegraphic Communication,” etc. Demy 8vo. 16/- net.

Electrical Engineering.

Single-Phase Electric Railways. E. Austin. Over 290 pages. 346 Illustrations. 21/- net.

Contents. —The Single-Phase System. The London, Brighton and South Coast Railway. The Midland Railway. The Midi Railway. The Blankenese-Hamburg-Ohlsdorf Railway. The Dessau-Bitterfeld Railway. The Murnau-Oberammergau Railway. The Mittenwald Railway. The St. Polton-Mariazell Railway. The Martigny-Orsières Railway. The Valle-Maggia Railway. The Rhætian Railway. The Lötschberg-Simplon Railway. The Rotterdam-Scheveningen Railway. The Thamshavn-Lokken Railway. The Rjukan Railway. The Swedish State Railways. The Parma Single-Phase Tramways. The New York, New Haven and Hartford Railway. The New York, Westchester and Boston Railway. The Spokane and Inland Empire Railway. The Rock Island and Southern Railway. The Hoosac Tunnel Railway. The St. Clair Tunnel Railway.

Application of Electric Power to Mines and Heavy Industries. W. H. Patchell, M.Inst.C.E., M.I.M.E., M.Am.I.E.E. ( See p. 23. )

[34]

Overhead Transmission Lines and Distributing Circuits: Their Design and Construction. A very thorough and much-needed Treatise dealing exhaustively with this important subject. F. Kapper. Translated by P. R. Friedlaender, M.I.E.E. Crown 4to. Fully Illustrated. 16/- net.

Contents. —Conductor Materials. Sag and Tension of the Line. Design of the Supporting Structures. Stability of Poles and Masts. The Forces on the Foundation Piece. Fixing the Poles in the Ground. Concrete and Cement Foundation Work. Pole Construction. Overhead Line insulators. Attachment of the Insulators to their Pins. Attachment of the Wire to the Insulators. Joints and Branch Connections on the Wire. Arrangement of the Wires. Earthing. Crossing over Postal Wires, Railways and Roads. Erection of Poles and Masts. Erecting the Wire. Rules and hints for the Design and Erection of Overhead Lines. Instruments for Surveying and Laying out the Route of a Line. Surveying the Route of a Transmission Line. The Most Economical Length of Span. Comparison of the various Supporting Structures with Reference to the Minimum Annual Charges. Local Overhead Distributing Systems. Agreements with Contractors. Tools and Appliances. Regulations dealing with the Erection and Operation of Overhead Lines.

Electric Mine Signalling Installations. A Practical Treatise on the Fitting-up and Maintenance of Electrical Signalling Apparatus in Mines. G. W. Lummis Paterson. Crown 8vo. 140 Illustrations. 5/- net.

Contents. —Ringing Keys and Tappers. Electric Mining Bells, Signal Alarms and Relays. Electric Mining Indicators or Annunciators. Electric Generators for Mine Signal Installations. Primary Batteries for Signal Installations. Electric Mining Shaft Signals. Electric Shaft Signal Wiring. Electric Engine Plane Signals. Electric Engine Plane Signal Wiring. Appendix.

Electric Welding and Welding Appliances. H. Carpmael. Imperial 8vo. Illustrated. (The Engineer Series.) 18/- net.

Contents. —Introduction. The Bernardos Carbon Arc Process. Resistance Welding. Arc Welding at Steel Barrel Works. The Pontelec Methods and Machines. The Quasi-Arc Process. Resistance Welders of the British Insulated and Helsby Cables, Ltd. Machines and Apparatus for Arc Welding. Resistance Welders of the Electric Welding Co., Ltd. Some Large American “Spot” Welders. Oil Drum Making by Resistance Welding. Resistance Welders of the A1 Manufacturing Co., Ltd. The strength of Electric Welds. A large British “Spot” Welding Machine. The “Plastic-Arc” Welding System. The “A.C.” System of Arc Welding. Index.

Transmission Line Formulas. For Electrical Engineers and Engineering Students. H. B. Dwight, A.M.Am.I.E.E. 143 pages. 28 Diagrams. 12/6 net.

Electric Cooking, Heating, Cleaning, etc. Being a Manual of Electricity in the Service of the Home. “Housewife” (Maud Lancaster). Edited by E. W. Lancaster, A.M.Inst.C.E., M.Inst.E.E. Fully Illustrated. 338 + x pages. Demy 8vo. 4/- net.

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Electric Mechanism. Part I. Single-Phase Commutator Motors. F. Creedy, A.C.G.I., A.M.I.E.E., Assoc. Am.I.E.E. Demy 8vo. 7/6 net.

Industrial Electrical Measuring Instruments. Kenelm Edgcumbe, M.Inst.C.E., M.I.E.E. Demy 8vo. 430 pages. 260 Illustrations. 16/- net. 2nd Edition, entirely Re-written and Enlarged.

Contents. —Errors and Accuracy. Constructional Details. Measurement of Resistances and Insulation. Potentiometers. Standard Methods of Current and Pressure Measurement. Moving Iron. Moving Coil. Hot Wire. Induction and Dynamometer Ammeters and Voltmeters. Electrostatic Voltmeters. Power Measurement. Dynamometer, Induction, Electrostatic and Hot-wire Wattmeters. Idle or Reactive Component Meters. Phase or Power Factor Meters. Phase Rotation Indicators. Frequency Meters. Fault and Leakage Detectors. Synchronising Devices. Pyrometers. Instrument Transformers. Graphic or Recording Instruments. Electrical Speed Indicators. Oscillograph and other Wave Form Indicators. Live Main or Charge Indicators. Earth-plate Testing Sets. Rail-bond Testing Sets. Cell-testing Voltmeters. Motor-Car Voltmeters and Ammeters. Voltage and Current Relays. Measurement of the Starting Current of a Motor. Paralleling. Compensated and Crest or Peak Voltmeters.

Calculation of Electrical Conductors. W. T. Taylor, M.Inst.C.E. Imperial 8vo. 32 pages. Diagrams in the Text. Chart at the end. 10/6 net. The Chart sold separately, 2/- net.

Solenoids, Electromagnets and Electromagnetic Windings. Charles Underhill, A.M.A.I.E.E. 346 pages. 218 Illustrations. Demy 8vo. 2nd Edn. Revised. 10/6 net.

Switches and Switchgear. R. Edler. Translated, Edited and Adapted to English and American Practice by Ph. Laubach, A.M.I.E.E. Fully Illustrated. Demy 8vo. 16/- net.

Contents. —General Remarks on the Design of Switchgear. Connecting Leads. Cable Sockets. Connections. Copper Bars. Contact Blocks. Bolts. Contact Springs and Brushes. Carbon Contacts. Devices to Eliminate Sparking at the Main Contacts. Switches and Change-over Switches for Low Pressure and Medium Pressure. High Pressure Switches. Fuses. Self-Acting Switches (Automatic Switches). Starting and Regulating Resistances. Controllers.

High and Low Tension Switchgear Design. A. G. Collis, A.M.I.E.E. Demy 8vo. 94 Illustrations. 12/- net.

[36]

Foster’s Electrical Engineer’s Pocket Book. A Handbook of Useful Data for Electricians and Electrical Engineers. Edited by Horatio A. Foster, M.A.I.E.E., M.A.S.M.E. With the Collaboration of Eminent Specialists. 5th Edition, completely Revised and Enlarged. Pocket size. Leather bound. With thumb index. Over 1600 pages. Illustrated. 36/- net.

The Propagation of Electric Currents in Telephone and Telegraph Conductors. J. A. Fleming, M.A., D.Sc., F.R.S. 21/- net. ( See p. 32. )

Dynamo Laboratory Manual. W. S. Franklin and William Esty .

Vol. I. Direct-Current Studies and Tests. 12/- net.

Elementary Electricity and Magnetism. W. S. Franklin and Barry MacNutt . 9/- net.

The Electrical Conductivity and Ionization Constants of Organic Compounds. Heyward Scudder, B.A., B.S., M.D. Royal 8vo. 568 pages. 17/6 net.

Electricity: A Text-book of Applied Electricity. H. M. Hobart, B.Sc., M.Inst.C.E. With 43 Tables and 115 Illustrations. Demy 8vo. 6/6 net.

Advanced Theory of Electricity and Magnetism. W. S. Franklin and Barry MacNutt . 16/6 net.

Elements of Electricity and Magnetism. W. S. Franklin and Barry MacNutt . 12/- net.

The Elements of Electrical Engineering. W. S. Franklin.

Vol. I. Direct and Alternating Current Machines and Systems. 28/- net.

Vol. II. Electric Lighting and Miscellaneous Applications of Electricity. 20/- net.

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Heavy Electrical Engineering. H. M. Hobart, B.Sc., M.Inst.C.E. Illustrated with Diagrams, etc. Demy 8vo. 16/- net.

Electric Railway Engineering. H. F. Parshall, M.Inst. C.E. , etc., and H. M. Hobart, B.Sc., M.Inst.C.E. 476 pages and nearly 600 Diagrams and Tables. Imperial 8vo. 42/- net.

American Electric Central Station Distribution Systems. Harry Barnes Gear, A.M.A.I.E.E. , and Paul Francis Williams, A.M.A.I.E.E. Demy 8vo. 2nd Edn. Revised and Enlarged. 18/- net.

Hydroelectric Developments and Engineering. A Practical and Theoretical Treatise on the Development, Design, Construction, Equipment and Operation of Hydroelectric Transmission Plants. Frank Köester. 479 pages. 500 Illustrations. 45 Tables. Imperial 8vo, 42/- net.

Steam-Electric Power Plants. A Practical Treatise on the Design of Central Light and Power Stations and their Economical Construction and Operation. Frank Köester. 474 pages. Fully Illustrated. Crown 4to. 31/6 net.

Electric Power and Traction. F. H. Davies, A.M.I.E.E. With 66 Illustrations. Extra Crown 8vo. 7/6 net.

Laboratory and Factory Tests in Electrical Engineering. George F. Sever and Fitzhugh Townsend . 2nd Edn. Thoroughly revised. 282 pages. Demy 8vo. 10/6 net.

The Theory of Electric Cables and Networks. Alexander Russell, M.A., D.Sc. 2nd Edn. Entirely Revised and largely Re-written. 24/- net.

Testing Electrical Machinery. J. H. Morecroft and F. W. Hehre . 15/- net.

Continuous Current Engineering. Alfred Hay, D.Sc., M.I.E.E. 2nd Edn. A New and Revised Edition of this Popular Text-Book. 30 pages. 183 Illustrations. Demy 8vo. 9/6 net.

Contents. —Electrical Units. Electromagnets. Magnetism. Hysteresis. Measuring Instruments. Dynamo Construction. Dynamo Used as Motor. Construction and Management of Motors. Secondary Cells and Their Uses. The Electric Arc. Mercury Vapour Lamps. Incandescent Lamps. Photometry. Switches. Conductors. Insulation.

[38]

Direct and Alternating Current Testing. Frederick Bedell, Ph.D. , Professor of Applied Electricity, Cornell University. Assisted by Clarence A. Pierce, Ph.D. Enlarged and Revised Edn. Demy 8vo. 11/- net.

Internal Wiring of Buildings. H. M. Leaf, M.I.M.E. , etc. 3rd Edn. Crown 8vo. 3/6 net.

Electric Lamps. Maurice Solomon, A.M.I.E.E. 7/6 net.

Contents. —The Principles of Artificial Illumination. The Production of Artificial Light. Photometry. Methods of Testing. Carbon-Filament Lamps. The Nernst Lamp. Metallic-Filament Lamps. The Electric Arc. The Manufacture and Testing of Arc Lamp Carbons. Arc Lamps. Miscellaneous Lamps. Comparison of Lamps of Different Types.

The Range of Electric Searchlight Projectors. Jean Rey , Ingenieur Civil des Mines Lauréat de l’Institut. Authorised translation by J. H. Johnson, M.Inst.E.E., Assoc. A.I.E.E. 34 Illustrations and Diagrams. 12/6 net.

Contents. —Part I: Illumination by Electric Searchlight Projectors. Determination of the Luminous Flux Emitted by an Electric Arc. Theoretical Illumination obtained with a Specified Reflector. Efficiency of Electric Searchlight Projectors. Practical Value of the Illumination from Searchlight Projectors. Searchlights with Mangin Mirrors. Part II: Range of Electric Searchlight Projectors. General Remarks. General Law giving the Value of the Range apart from the Visual Sharpness. Practical Application of the Law of Ranges, apart from the Visual Acuity. Practical Examples and Problems in respect of the Range. The Variation in the Range with the Size of the Searchlight and the Atmospheric Transparency. Visual Acuity of Sharpness. Appendices and Index.

Searchlights: Their Theory, Construction and Application. F. Nerz. Translated from the German by Charles Rodgers . Royal 8vo. 7/6 net.

Essentials of Electrical Engineering. John Fay Wilson. Royal 8vo. 282 Illustrations. 16/- net.

Contents. —The Electric Circuit. Magnetism and Magnetic Induction. Practical Construction of the Dynamo. The Continuous Current Generator. The Continuous Current Motor. Losses, Efficiencies and Ratings of Continuous Current Dynamos. Polyphase Alternating Currents. The Alternating Current Generator. The Synchronous Motor. Current Rectifying Apparatus. The Transformer. Transformer Connections. The Induction Motor. Single-phase Commutating Motors. Electric Lamps. Circuit Interrupting Apparatus. Meters. Power Transmission and Distribution. The Storage Battery. Harmonic Quantities. Inductance. Capacity. The Complex Quantity. Admittance, Conductance and Susceptance. Resuscitation from Electric Shock.

Electric Wiremen’s Manuals. ( See p. 7. )

[39]

Electro-Chemistry, etc.

Electro-Metallurgy. J. B. C. Kershaw, F.I.C. With 61 Illustrations. Extra Crown 8vo. 7/6 net.

Contents. —Aluminium. Bullion and Gold. Calcium Carbide and Acetylene Gas. Carborundum. Copper. Ferro-Alloys. Glass and Quartz Glass. Graphite. Iron and Steel. Lead. Miscellaneous Products. Nickel. Sodium. Tin. Zinc.

The Manufacture of Chemicals by Electrolysis. A. J. Hale, B.Sc., F.I.C. (A Treatise of Electro-Chemistry. Edited by Bertram Blount, F.I.C. ) Demy 8vo. Illustrated. 6/- net.

Contents. —Electrolytic Hydrogen and Oxygen. Ozone. Production of Per-Salts and Hydrogen Peroxide. Nitric Acid. Hydroxylamine. Hydrosulphites. Fluorine. Electrolytic Preparation of Pigments and Insoluble Substances. Electro-Osmotic and Electro-Colloidal Processes. Electrolytic Reduction of Organic Compounds. Oxidation and Substitution of Organic Compounds. Appendix. Name Index. Subject Index.

Ozone. S. Rideal, D.Sc., F.I.C., F.C.S. (A Treatise of Electro-Chemistry. Edited by Bertram Blount, F.I.C. ) Demy 8vo. 12/- net.

Contents. —Early History of Ozone and its General Properties. The Natural Occurrence of Ozone. Chemical Production. Thermal Production. The Electrolytic Preparation of Ozone. Production by Ultra-Violet Radiation and by Ionic Collision. Production by means of the Silent Electric Discharge. The Catalytic Decomposition of Ozone. Industrial Applications. Methods of Detection and Analysis. Name Index. Subject Index.

Lighting.

Electric Lamps. Maurice Solomon, A.C.G.I., A.M.I.E.E. Extra Crown 8vo. 7/6 net. ( See p. 38. )

Town Gas and its Uses for the Production of Light, Heat, and Motive Power. W. H. Y. Webber, C.E. With 71 Illustrations. Extra Crown 8vo. 7/6 net.

Thermodynamics.

Entropy: Or, Thermodynamics from an Engineer’s Standpoint, and the Reversibility of Thermodynamics. James Swinburne, M.Inst.C.E., M.I.E.E. , etc. Illustrated with Diagrams. Crown 8vo. 5/- net.

[40]

Applied Thermodynamics for Engineers. William D. Ennis, M.E., M.Am.Soc.M.E. , Professor of Mechanical Engineering in the Polytechnic Institute of Brooklyn. With 316 Illustrations. Royal 8vo. 21/- net.

Technical Thermodynamics. Dr. Gustav Zeuner. First English Edition. From the Fifth Complete and Revised Edition of “Grundzuge der Mechanischen Wärmetheorie.”

Vol. I. Fundamental Laws of Thermodynamics; Theory of Gases.

Vol. II. The Theory of Vapours.

Authorised translation by J. F. Klein, D.E. , Professor of Mechanical Engineering, Lehigh University. Fully Illustrated. 2 Volumes. Demy 8vo. 42/- net.

A Text-Book of Thermodynamics. With special reference to Chemistry. By J. R. Partington, M.Sc. , of the University of Manchester. 544 + x pages. 91 Diagrams. Demy 8vo. 10/6 net.

Contents. —Thermometry and Calorimetry. The first law of Thermodynamics and some Applications. The Second Law of Thermodynamics; Entropy. The Thermodynamic Functions and Equilibrium. Fluids. Ideal and Permanent Gases. Changes of Physical State. Van Der Waals’ Equation and the Theory of Continuity of States. Thermochemistry. Gas Mixtures. The Elementary Theory of Dilute Solutions. Chemical Equilibrium in Gaseous Systems. Equilibrium in Dilute Solutions. General Theory of Mixtures and Solutions. Capillarity and Adsorption. Electrochemistry. The Theorem of Nernst. Kinetic Theories in Thermodynamics. Index.

Experimental and Theoretical Applications of Thermodynamics to Chemistry. Professor Walter Nernst , University of Berlin. Extra Crown 8vo. 9/- net.

Principles of Thermodynamics. G. A. Goodenough, M.E. 2nd Edn. Revised. 14/- net.

Physics and Chemistry.

The Measurement of Steady and Fluctuating Temperatures. R. Royds, M.Sc., A.M.I.Mech.E. Demy 8vo. 162 pp.

This book gives a concise account of modern methods of measuring both steady and fluctuating temperatures and of their applications in industrial practice.

Heat Transmission. R. Royds, M.Sc., A.M.I.Mech.E. Demy 8vo.

Vol. I. By Radiation, Conduction, and Convection.

Vol. II. In Boilers, Condensers, and Evaporators.

Each volume sold separately.

[41]

Standards and Tests for Reagent Chemicals. Benjamin L. Murray. Member of the American Chemical Society, Chemical Society (London), Society of Chemical Industry, etc. etc. 385 pages. Demy 8vo.

The Silicates in Chemistry and Commerce. Drs. W. and D. Asch. Translated with Critical Notes and some Additions by A. B. Searle . 400 + xx pages. Royal 8vo. 21/- net.

Contents. —The Chemistry of Carbon and Silicon. Historical Review of Existing Theories concerning the Constitution of the Alumino-silicates and other Silicates. Critical Examination of Existing Theories concerning Alumino-silicates. A Hypothesis concerning the Bonding of the Atoms in Alumino-silicates and Allied Compounds. The Consequences of the “Hexite-Pentite Theory,” and the Facts: (I.) The Reaction during Double Decomposition; (II.) The Genetic Relationship between the various Alumino-silicates; (III.) The Possibility of a Chemical System of Alumino-silicates; (IV.) The Variable Chemical Behaviour of part of the Aluminium in Kaolin, Nepheline and in the Epidotes; (V.) The Minimum Molecular Weight of Alumino-silicates; (VI.) The Constitution of Andesite; (VII.) The Possibility of Isomerism; (VIII.) Water of Crystallisation and of Constitution: Basic and Acid Water; (IX.) Prognoses; (X.) The Constitution of the Complexes of Molybdenum and Tungsten; (XI.) The Constitution of Clays; (XII.) Ultramarines; (XIII.) A New Theory of Hydraulic Binding Materials and particularly of Portland Cements; (XIV.) A New Theory of the Porcelain Cements as used for Dental Fillings; (XV.) A New Theory of Glass, Glazes and Porcelain; (XVI.) The Hexite-Pentite Theory as a General Theory of Chemical Compounds. The Conversion of the H.P. Theory into a Stereochemical Theory and the combination of the latter with the modern theory of the Structure of Crystals. Summary and Conclusions. Bibliography of references mentioned in Text. Appendix. Formulæ and Analyses. Bibliography of references in Appendix.

Industrial Chemistry. A Manual for the Student and Manufacturer. 2nd Edn. Revised and Enlarged. Edited by Allen Rogers , in charge of Industrial Chemistry, Pratt Institute, Brooklyn, N.Y.; in collaboration with many Experts. 340 Illustrations. Royal 8vo.

Contents. —General Processes. Materials of Construction. Water for Industrial Purposes. Fluids. Producer Gas. Power Transmission, Boilers, Engines and Motors. Sulphuric Acid. Nitric Acid. Salt and Hydrochloric Acid. Commercial Chemicals. Chlorine and Allied Products. Electro-chemical Industries. Lime, Cement and Plaster. Clay, Bricks and Pottery. Glass. Dutch Process White Lead. Sublimed White Lead. Pigments, Oils and Paints. The Metallurgy of Iron and Steel. Fertilizers. Illuminating Gas. Coal Tar and its Distillation Products. The Petroleum Industry. The Destructive Distillation of Wood. Oils, Fats and Waxes. Lubricating Oils. Soaps, Glycerine and Candles. Laundering. Essential Oils, Synthetic Perfumes and Flavouring Materials. Resins, Oleo-Resins, Gum-Resins and Gums. Varnish. Sugar. Starch, Glucose, Dextrin and Gluten. Brewing and Malting. Wine Making. Distilled Liquors. Textiles. Dyestuffs and their Application. The Art of Paper Making. Explosives. Leather. Vegetable Tanning Materials. Glue and Gelatine. Casein.

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Elements of Industrial Chemistry. Edited by Allen Rogers . An Abridgment of the Manual of Industrial Chemistry prepared especially for Students. Demy 8vo. 520 pages. 117 Illustrations. 16/- net.

Contents. —General Processes. Water for Industrial Purposes. Fuels. Sulphuric Acid. Nitric Acid. Hydrochloric Acid. Elements and Compounds. Electro-chemical Industries. Lime, Cement and Plaster. Ceramic Industries. Pigments and Paints. Iron and Steel. Fertilisers. Organic Chemicals. Illuminating Gas. Coal Tar and Distillation Products. Petroleum. Distillation of Wood. Oils, Fats and Waxes. Soap and Glycerine. Essential Oils. Gums and Resins. Sugar, Starch and Glucose. Brewing. Wine Making and Distilling. Textiles. Dyestuffs. Paper and Cellulose Industries. Explosives. Leather.

Laboratory Guide of Industrial Chemistry. Allen Rogers , Editor of “A Manual of Industrial Chemistry,” “Elements of Industrial Chemistry,” etc. Demy 8vo. 212 pages. 33 Illustrations. 2nd Revised and Enlarged Edition. 15/- net.

Contents. —General Process. Inorganic Preparations. Organic Preparations. Dyeing of Textile Fibres. Pigments and Lakes. Driers, Varnishes, Paints and Stains. Soap and Allied Products. Leather Manufacture. Wood Fibre, Pulp and Paper. Useful Data.

The Application of Physico-Chemical Theory to Technical Processes and Manufacturing Methods. Dr. R. Kremann. Translated by H. E. Potts, M.Sc. ( See p. 51. )

The Chemistry and Technology of Printing Inks. Norman Underwood and Thomas V. Sullivan . Medium 8vo. 12/6 net.

Experimental and Theoretical Applications of Thermodynamics to Chemistry. Walter Nernst , University of Berlin. Extra Crown 8vo. 9/- net.

Vapours for Heat Engines. William D. Ennis, M.E., M.Am.Soc.M.E. , Professor of Mechanical Engineering in the Polytechnic Institute of Brooklyn, Author of “Applied Thermodynamics for Engineers,” etc. With 21 Tables and 17 Illustrations. Demy 8vo. 6/6 net.

The Manufacture of Chemicals by Electrolysis. A Treatise of Electro-Chemistry Series. A. J. Hale, B.Sc., F.I.C. Demy 8vo. Illustrated. 6/- net. ( See p. 39. )

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The Hydrogenation of Oils. Catalyzers and Catalysis and the Generation of Hydrogen. Carleton Ellis, S.B. New and Revised Edition. 40/- net.

Introduction to the Chemistry and Physics of Building Materials. Alan E. Munby, M.A.(Cantab.). Extra Crown 8vo. 7/6 net.

A Calendar of Leading Experiments. W. S. Franklin and Barry Macnutt . 16/6 net.

The Chemistry of Paints and Paint Vehicles. By C. H. Hall, B.S. Crown 8vo.

The Chemistry of the Oil Industries. J. E. Southcombe, M.Sc. , Lecturer on Oils and Fats, Royal Salford Technical Institute, etc. Illustrated. 9/- net.

Contents. —Preface. Introductory Organic Chemistry. Mineral Oils. Natural Sources and Methods of Preparation of the Saponifiable Oils and Fats. Impurities occurring in Crude Oils and Fats and the Technical Methods of Removing them. Composition and Properties of the Saponifiable Oils and Fats in general. The Natural Waxes. Analytical Methods. Industrial Applications of Fats and Oils. Saponification of Fats and Oils. Candle Manufacture, Soap Making, Glycerine. Conclusion. Scientific and Technical Research on Problems in the Oil and Related Industries. Literature Index. Illustrations

The Chemistry of the Coal Tar Dyes. Irving W. Fay, Ph.D.(Berlin). Demy 8vo. 470 pages. 21/- net.

The Chemistry of the Rubber Industry. Harold E. Potts, M.Sc. , Member International Rubber Testing Committee. Demy 8vo. 7/6 net. 2nd Impression.

Contents. —The Colloidal State. Raw Rubber. Gutta-Percha and Balata. Mixing. Vulcanisation, History. Vulcanised Rubber.

The Chemistry of Cement, Concrete, and Bricks. A. B. Searle. Demy 8vo. 10/6 net.

Contents. —The Raw Materials for Cements. Methods of Cement Manufacture. The Chemical and Physical Changes in Cements. The Changes which occur in Setting and Hardening. Testing the Properties of Cements. The Components of Concrete and their Properties. The Preparation of Concrete. Reinforced Concrete. Special Properties of Concrete. Testing Concrete. The Raw Materials for Bricks. Methods of Brickmaking. The Chemical and other Changes in Drying and Burning Bricks. The Properties of Bricks. Siliceous Bricks. Basic and Neutral Bricks. Index.

Liquid Air and the Liquefaction of Gases. T. O’Conor Sloane, M.A., M.E., Ph.D. Demy 8vo. 2nd Edn. 21/- net.

Detection of the Common Food Adulterants. A handbook for health officers, food inspectors, chemistry teachers and students. Prof. E. M. Bruce. Crown 8vo. 2nd Edn. Revised. 10/6 net.

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The Chemistry of Dyeing and Bleaching of Vegetable Fibrous Materials. Julius Hübner, M.Sc.Tech., F.I.C. Demy 8vo. 2nd Impression. Very fully Illustrated. 20/- net.

Contents. —The Vegetable Fibres. Water. Chemicals and Mordants. Bleaching. Mercerising. Mineral Colours. The Natural Colouring Matters. Basic Cotton Dyestuffs. Substantive Cotton Dyestuffs. Sulphur Dyestuffs. Acid and Resorcine Dyestuffs. Insoluble Azo-Colours, produced on the fibre. The Vat Dyestuffs. Mordant Dyestuffs. Colours produced on the fibre by Oxidation. Dyeing Machinery. Estimation of the Value of Dyestuffs. Appendix. Index.

The Colloidal and Crystalloidal State of Matter. H. E. Potts, M.Sc. , and W. J. Breitland . Translated from the German of Professor P. Rohland . Crown 8vo. 4/6 net.

Colloids in Biology and Medicine. Prof. H. Beechold. Translated from 2nd German Edition by J. M. Bullaya, A.B., M.D. Illustrated. 31/6 net.

The Nitrocellulose Industry. A compendium of the history, chemistry, manufacture, commercial application and analysis of nitrates, acetates and xanthates of cellulose as applied to the peaceful arts, with a chapter on gun cotton, smokeless powder and explosive cellulose nitrates. Edward Chauncey Warden, Ph.C., M.A., F.C.S. 2 Volumes. 1240 pages. 324 Illustrations. Small 4to. 50/- net.

Trinitrotoluenes and Mono- and Dinitrotoluenes: Their Manufacture and Properties. G. Carlton Smith, B.Sc. Extra Crown 8vo. 140 pages. 8/6 net.

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Materials for Permanent Painting. A manual for Manufacturers, Art Dealers, Artists and Collectors, explaining the composition of the materials used in painting. M. Toch, F.C.S. Frontispiece in Colour and other Illustrations. Crown 8vo. 8/- net.

Principles of Quantitative Analysis. Walter C. Blasdale, Ph.D. Demy 8vo. 400 pages. 70 Illustrations. 17/- net.

Contents. —Introductory Statements and Definitions. General Features of Gravimetric Processes. Gravimetric Gas Evolution Processes. Gravimetric Precipitation Processes. Gravimetric Solution and Extraction Processes. Partition Processes. General Features of Volumetric Processes. Volumetric Processes Involving Precipitation. Volumetric Processes Involving Neutralisation. Volumetric Processes Involving Oxidation. Physico-Chemical Processes.

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The Theory and Use of Indicators. An Account of the Chemical Equilibria of Acids, Alkaloids and Indicators in Aqueous Solution, with Applications. E. B. R. Prideaux, M.A., D.Sc. Demy 8vo. 390 pages. 12/6 net.

Contents. —The Equilibria of Acids, Bases and Salts, and the Physical Methods of Determining Acidity and Alkalinity. Light Absorption in the Visible Spectrum and Colorimetry. Theories of Colour in their Relation to the Ionic Theory, Chemical Constitution and the Formation of Salts. The Colour of Indicators as a Function of Hydrion Concentration. The Determination and Use of Indicator Constants. The Preparation and Use of Solutions of Standard Hydrion Concentration. Applications. The Course of Neutralisation and the Theory of Titration. The Solution Equilibrium and Titration of some Acids. A Summarised List of the Principal Indicators with Absorption Spectra.

Problems in Physical Chemistry. With Practical Applications. E. B. R. Prideaux, M.A., D.Sc. , with a Preface by F. G. Donnan, M.A., Ph.D., F.R.S. 2nd Edn. Revised. 18/- net.

Contents. —Preface. Author’s Preface. Mathematical Methods and Formulæ. Table of Logarithms. List of Symbol and Abbreviations. Units and Standard of Measurement. Thermochemistry. Systems of One Component. Systems of Two Components. Reactions in Solution. Electromotive Force and Chemical Reaction. Velocity of Chemical and Radioactive Changes. Reactions in Gases.

Chemical Theory and Calculations. An Elementary Text-Book. Forsyth J. Wilson, D.Sc.(Edin.), Ph.D.(Leipzig) , and Isidor M. Heilbron, Ph.D. (Leipzig), F.I.C., A.R.T.C. 2nd Edition. 4/6 net.

Chemical Calculations. R. Harman Ashley, Ph.D. Extra Crown 8vo. 10/- net.

Contents. —Ratios. Approximate Numbers. Interpolation. Heat. Specific Gravity. Gas Calculations. Calculation of Atomic Weights and Formulas. Gravimetric Analysis. Volumetric Analysis. Use of Specific Gravity Tables and Acid Calculations.

The Nature of Solution. H. C. Jones , with a Biographical Memoir by Professor E. E. Reid . Large 8vo. 400 pages. 18/- net.

Contents. —Importance of Solution. Earlier Views as to the Nature of Solution. The Osmotic Pressure of Solutions. Relations between Solutions and Gases Demonstrated by Vant Hoff. The Theory of Electrolytic Dissociation as Announced by Arrhenius. Diffusion in Solution. Depression of the Vapour-tension of a Solvent by Substances Dissolved in it. Depression of Freezing-Point of a Solvent by the Solute. Aqueous Solutions of Acids, Bases and Salts—Electrolytes. Some Electrical Properties of Aqueous Solutions of Electrolytes. Solution in Non-aqueous and in Mixed Solvents. Colloidal Solutions. Solutions in Solids as Solvents. The Newer Hydrate Theory. The Solvate Theory of Solutions.

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A Text-Book of Thermodynamics. With Special Reference to Chemistry. J. R. Partington, M.Sc. 10/6 net. ( See p. 40. )

Text-Book of Elementary Chemistry. F. Mollwo Perkin, Ph.D., F.I.C., F.C.S. . and Eleanor M. Jaggers . Crown 8vo. 4/- net.

Contents. —Examination of Water. Metric System. Distillation. Thermometers. Freezing Points. Boiling Points. Melting Points. The Atmosphere. Chemical Properties of the Atmosphere. Chemical Properties of Water. Hydrogen and Oxygen. Quantitative Examination of Chalk. Carbon and its Oxides and Compounds with Hydrogen. Flame and Combustion. Compounds of Nitrogen. Hydrochloric Acid and the Halogens. Sulphur and its Compounds. Phosphorus and Phosphorous Compounds. The Metals. Technical Processes. Appendix. Index.

Practical Methods of Inorganic Chemistry. F. Mollwo Perkin, Ph.D. Crown 8vo. 3/6 net.

The Identification of Organic Compounds. G. B. Neave, M.A., D.Sc. , and I. M. Heilbron, Ph.D., F.I.C. , etc. Crown 8vo. 2nd Edn. 4/6 net.

Contemporary Chemistry. E. E. Fournier D’Albe, B.Sc., A.R.C.S., M.R.I.A. , Author of “The Electron Theory,” etc. 4/- net.

A New Era in Chemistry. Some of the more important developments in General Chemistry during the last quarter of a century. Harry C. Jones. 326 + xii pages. Extra Crown 8vo. 8/6 net.

Some Fundamental Principles of Chemistry, Old and New. E. A. Letts, D.Sc. , Professor of Chemistry in the Queen’s University, Belfast. Demy 8vo. 223 + xiii pages. 44 Illustrations. 8/- net.

An Introduction to the Study of Physical Metallurgy. Walter Rosenhain, B.A., D.Sc., F.R.S. 350 + xvi pages. 140 Illustrations. Demy 8vo. 12/6 net. ( See p. 17. )

Theory of Measurements. A manual for students in physics designed for use either as a text-book or as a laboratory guide. James S. Stevens , Professor of Physics in the University of Maine. Extra Crown 8vo. 10/- net.

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Electric Arc Phenomena. E. Rasch. Translated by K. Tornberg. Demy 8vo. 52 Illustrations. 18/- net.

Contents. —General Outline of Electric Arc Phenomena. Typical Carbon Arc. Electrode Materials and their Physical Properties. Theory of Electric Discharges through Gases. Spark Discharges. Empirical Results. Voltage and Current Conditions in the Arc. Distribution of Energy in the Arc. Efficiency of Commercial Types of Arc.

Physical Laboratory Experiments for Engineering Students: Mechanics, Sound, Heat, and Light. Samuel Sheldon, Ph.D., D.Sc. , and Erich Hausmann, F.E., Sc.D. Demy 8vo. 134 pages. 40 Illustrations. 7/6 net.

Radio-Active Transformations. Ernest Rutherford, F.R.S. Demy 8vo. 31/6 net.

The Theory of Ionization of Gases by Collision. John S. Townsend, M.A., F.R.S. , Wykeham Professor of Physics in the University of Oxford. Crown 8vo. 4/6 net.

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The Electrical Nature of Matter and Radioactivity. H. C. Jones , Professor of Physical Chemistry in the Johns-Hopkins University. 3rd Edn. Revised and largely Rewritten. Demy 8vo. 220 pages. 8/6 net.

The Corpuscular Theory of Matter. Sir J. J. Thomson, M.A., F.R.S., D.Sc., LL.D., Ph.D. , Professor of Experimental Physics, Cambridge, and Professor of Natural Philosophy at the Royal Institution, London. Demy 8vo. 7/6 net.

Radio-Activity and Geology. John Joly, M.A., Sc.D., F.R.S. , Professor of Geology and Mineralogy in the University of Dublin. Crown 8vo. 10/- net.

A Text-Book of Physics. H. E. Hurst, B.A., B.Sc. , Hertford College, Oxford, late Demonstrator in Physics in the University Museum, Oxford, and R. T. Lattey, M.A. , Royal Naval College, Dartmouth, late Demonstrator in Physics in the University Museum, Oxford. Many Illustrations and Diagrams. Demy 8vo. 12/6 net.

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Electricity and Matter. Sir J. J. Thomson, M.A., F.R.S., D.Sc., LL.D., Ph.D. Crown 8vo. 9/- net.

Exercises in Physical Chemistry. Dr. W. A. Roth , Professor of Chemistry in the University of Greifswald. Authorised Translation by A. T. Cameron, M.A., B.Sc. , of the University of Manitoba. Demy 8vo. 6/- net.

Practical Physics. Franklin , Crawford and Macnutt .

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Atoms. Jean Perrin. Translated by D. Ll. Hammick . Demy 8vo. 16 Illustrations. 9/- net.

Contents. —Chemistry and the Atomic Theory. Molecular Agitation. The Brownian Movement—Emulsions. The Laws of the Brownian Movement. Fluctuations. Light and Quanta. The Atom of Electricity. The Genesis and Destruction of Atoms. Index.

The Universe and the Atom. The Ether Constitution, Creation and Structure of Atoms, Gravitation, and Electricity, Kinetically explained. Marion Erwin, C.E. Demy 8vo. 8/6 net.

Contents. —Part I., First Principles. Part II., The Pan Cycle Hypothesis: Invisible Composition Light Waves, the Warp and Woof of the Ether Structure and of All Things Material.

The Profession of Chemistry. Richard B. Pilcher , Registrar and Secretary of the Institute of Chemistry of Great Britain and Ireland. Crown 8vo. 6/6 net.

Contents. —Synopsis of Training and Possible Careers for a Chemist. Preliminary Education. Pharmacists and Chemists. Professional Training. Prospects and Conditions of Practice. Professional Organisation. Public Analysts and Official Agricultural Analysts. Professional Procedure. Industrial Chemistry. Chemistry and the State. Teaching. Women in Professional Chemistry. Chemists in War.

What Industry Owes to Chemical Science. Richard B. Pilcher and Frank Butler-Jones, B.A. With an Introduction by Sir George Beilby, LL.D., F.R.S. Crown 8vo. 166 pages. 4/- net.

The authors show how science has advanced the methods and processes of production and laid the foundation for the establishment of new manufactures. Many important industries are surveyed with the particular object of informing students of chemistry and engineering of the vast field open to them in their professional careers.

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Van Nostrand’s Chemical Annual. A Handbook of Useful Data for Analytical, Manufacturing, and Investigating Chemists, and Chemical Students. Edited by John C. Olsen, M.A., Ph.D. , Professor of Analytical Chemistry, Polytechnic Institute, Brooklyn; with the co-operation of Eminent Chemists. Nearly 100 Tables. Crown 8vo. 18/6 net.

Principles of Microscopy. Being an Introduction to Work with the Microscope. Sir A. E. Wright, M.D., F.R.S., D.Sc., Dublin (Honoris Causa), F.R.C.S.I. (Hon.). With many Illustrations and Coloured Plates. Super Royal 8vo. 21/- net.

Ozone. (A Treatise of Electro-Chemistry. Edited by Bertram Blount, F.I.C. ) S. Rideal, D.Sc., F.I.C., F.C.S. Demy 8vo. 12/- net. ( See p. 39. )

Metallurgy.

Methods in Metallurgical Analysis. Charles H. White , Assistant Professor in Mining and Metallurgy in Harvard University. Demy 8vo. 106 Illustrations. 21/- net.

Contents. —Definition of the Subject. Sampling. Necessity for Correct Sampling. The Operations of Analysis, Gravimetric, Volumetric Analysis. Calorimetry. Methods of Analysis in the Metallurgy of Iron and Steel. Moisture. Hydroscopic Water. Combined Water. Loss of Ignition. Iron in Ores. Silica, Sulphur, Phosphorus, Alumina, Manganese, Lime, Magnesia and Titanium in Ore. Analysis of—Iron and Steel, Iron Slags, Limestone. Methods of Analysis in the Metallurgy of Copper, Lead, etc. Copper, Lead, Zinc and Arsenic in Ore. Analysis of—Copper Matte, Chilled Blast Furnace Slags, Reverberatory Slags, Briquettes and other Copper-bearing Products, Copper Bullion, Alloys. Methods of Analysis in the Production of the Precious Metals. Analysis of Fluxes. Analysis of Fuels. Analysis of Clay. Methods for the Determination of Some of the Minor Metals. Methods for the Determination of some of the Rarer Metals. Testing of Lubricating Oils. Examination of Boiler Water. Detection of the Metals. Tables. General References.

An Introduction to the Study of Physical Metallurgy. Walter Rosenhain, B.A., D.Sc., F.R.S. 140 Illustrations. Demy 8vo. 12/6 net.

Contents. —The Structure and Constitution of Metals and Alloys. The Microscopic Examination of Metals. The Metallurgical Microscope. The Micro-Structure of Pure Metals and Alloys. The Thermal Study of Alloys. The Constitutional Diagram and the Physical Properties of Alloys. Typical Alloy Systems. The Iron-Carbon System. The Properties of Metals as Related to their Structure and Constitution. The Mechanical Testing of Metals. The Mechanical Testing of Metals ( contd. ). The Effect of Strain on the Structure of Metals. The Thermal Treatment of Metals. The Mechanical Treatment of Metals, including Casting. Defects and Failures in Metals and Alloys.

The Electro-Metallurgy of Steel. Colin Gow, A.R.S.M., B.Sc. Edited by Bertram Blount . Demy 8vo. Illustrated. About 24/- net.

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Mathematics.

The Theory of Proportion. M. J. M. Hill, M.A., LL.D., Sc.D., F.R.S. Demy 8vo. 15 Figures. 6/- net.

Contents. —Magnitudes of the same Kind. Propositions relating to Magnitudes and their Multiples. The Relations between Multiples of the same Magnitude. Commensurable Magnitudes. Magnitudes of the same Kind which are not Multiples of the same Magnitude. Incommensurable Magnitudes. Extension of the Idea of Number. On the Ratios of Magnitudes which have no Common Measure. Properties of Equal Ratios. First Group of Propositions. Second Group of Propositions. Third Group of Propositions—Geometrical Applications of Stolz’s Theorem. Further Remarks on Irrational Numbers. The Existence of the Fourth Proportional. Commentary on the Fifth Book of Euclid’s Elements.

Elementary Plane Trigonometry. H. E. Piggott, M.A. Second Master and Head of Mathematical Department, Royal Naval College, Dartmouth. Late Director of Naval Studies at Cambridge, Formerly Scholar of Clare College, Cambridge. Crown 8vo. 7/6 net.

Contents. —The Tangent of an Acute Angle. The Sine and Cosine of an Acute Angle. Miscellaneous Application of the Sine, Cosine and Tangent. The Co-tangent, Secant, and Co-secant of an Acute Angle. Exercises of the Six Trigonometrical Ratios. Miscellaneous Revision Examples. Solution of Triangles. Miscellaneous Problems. Areas of Triangles, etc. Circular Measure. The Sphere. Trigonometrical Ratios of Angles Greater than 180°. Directed Lines. Compound Angles. Graphs of Periodic Functions. Appendix I. Traverse Table. Appendix II: Haversines. Miscellaneous Examples. Answers to Examples. Index.

Integration by Trigonometric and Imaginary Substitution. Charles O. Gunther , with an Introduction by J. Burkett Webb, C.E. Demy 8vo. 5/- net.

Quaternions, as the Result of Algebraic Operations. Arthur Latham Baker, Ph.D. Extra Crown 8vo. 6/- net.

The Calculus and its Applications. A Practical Treatise for Beginners, especially Engineering Students. With over 400 examples, many of them fully worked out. Robert Gordon Blaine, M.E., A.M.Inst.C.E. , formerly Lecturer at the City Guilds’ Technical College. Crown 8vo. 5/- net.

An Elementary Treatise on the Calculus. Franklin , MacNutt and Charles . 16/6 net.

Elementary Statics. Franklin and MacNutt . 4/- net.

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Mathematics for the Practical Man. A short work explaining all the elements of Algebra, Geometry, Trigonometry, Logarithms, Co-ordinate Geometry, and Calculus. George Howe, M.E. Crown 8vo. 7/- net.

The Practical Mechanic’s Handbook. F. E. Smith. 8/- net.

Contents. —Arithmetic. Arithmetical Signs and Characters and Explanation of Solving Formula. Mensuration. How the Dimensions, Measurements, and Weights of Different Shaped Vessels are Found. The Primary or Simple Machines. Strength of Materials and Questions Relating to Stress.

Manufacture and Industries.

Application of Physico-Chemical Theory to Technical Processes and Manufacturing Methods. Dr. R. Kremann. Translated into English and Edited by H. E. Potts, M.Sc. Demy 8vo. 9/- net.

Contents. —The Two Fundamental Laws of the Mechanical Theory of Heat. Reaction-Velocity and Catalytes. Other Special Applications of the Law of Mass Action. The Influence of Temperature on the Equilibrium-Constant. Dissociation Pressure. Application of the Phase Rule. The Application of the Phase Rule to Solid-Liquid Systems. Transformation Phenomena in Hydraulic Binding Agents. Other Applications of the Phase Rule. The Distribution Law. Adsorption Compounds. Reciprocal Pairs of Salts.

Chemistry of the Oil Industries. J. E. Southcombe, M.Sc. , Lecturer on Oils and Fats, Royal Salford Technical Institute, etc. 9/- net.

Contents. —Preface. Introductory Organic Chemistry. Mineral Oils. Petroleum and Shale. Mineral Oil Refining. Natural Sources and Methods of Preparation of the Saponifiable Oils and Fats. Impurities occurring in Crude Oils and Fats and the Technical Methods of Removing them. Composition and Properties of the Saponifiable Oils and Fats in General. Composition and Properties of the Individual Oils and Fats of Commercial Importance. The Natural Waxes, their Composition and Properties. Analytical Methods. Industrial Applications of Fats and Oils. Burning Oils. Edible Oils and Margarines. Polymerised, Boiled and Blown Oils. Turkey-Red Oils. Saponification of Fats and Oils on a Technical Scale. The Distillation of Fatty Acids. Oleines and Stearines. Candle Manufacture. Soap-Making. Glycerine. Conclusion: Scientific and Technical Research on Problems in the Oil and Related Industries. Literature.

Linseed Oil and other Seed Oils. An Industrial Manual. William D. Ennis, M.E., M.Am.Soc.M.E. , Professor of Mechanical Engineering, Polytechnic Institute of Brooklyn. Medium 8vo. Illustrated. 37/6 net.

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The Production and Treatment of Vegetable Oils. Including Chapters on the Refining of Oils, Hydrogenation of Oils, Generation of Hydrogen, Soap Making, Recovery and Refining of Glycerine, and the Splitting of Oils. T. W. Chalmers, B.Sc., A.M.I.Mech.E. Crown 4to. 164 pages. 9 Folding Plates. 95 Illustrations. 21/- net.

Contents. —Introductory. Principal Vegetable Oils. Preparatory Machinery for Copra and Linseed, Palm Fruits and Palm Kernels, Cotton Seed and Castor Seed. Special Forms of Reduction Machinery. Meal Kettles, Receiving Pans and Moulding Machines. Oil Presses. Anglo-American and Cage Type. General Arrangement of Oil Mills. Extraction of Oils by Chemical Solvents. Refining of Oils. Hydro-generation or Hardening of Oils. Generation of Hydrogen for Oil Hardening Purposes. Manufacture of Soap. Glycerine Recovery and Refining and the Splitting of Oils.

Cotton Seed Products. A Manual of the Treatment of Cotton Seed for its Products and their Utilization in the Arts. Leebert Lloyd Lamborn, M.Am.C.S., M.S.C.I. With 79 Illustrations and a Map. Demy 8vo. 31/6 net.

Paper Making and its Machinery. T. W. Chalmers. Imperial 8vo. 200 pages. Illustrated. 26/- net.

Contents. —Introduction. Cutting, Cleaning and Boiling. Washing, Breaking and Bleaching. Purifying and Pulping. Beating. Refining. The Fourdrinier Machine. Fourdrinier Driving Arrangements. Details of the Fourdrinier. Pulp Strainers. Tub Sizing. Calendering, Cutting and Winding. Wood Pulp. The Coating of Art Paper. The Finishing of Coated Art Paper. The Coating of Photographic Paper.

The Manufacture of Paper. R. W. Sindall, F.C.S. 2nd Edn. Extra Crown 8vo. 8/6 net.

Contents. —Preface. List of Illustrations. Historical Notice, Cellulose and Paper-Making Fibres. The Manufacture of Paper from Rags, Esparto and Straw. Wood Pulp and Wood Pulp Papers. Brown Papers and Boards. Special kinds of Paper. Chemicals used in Paper-making. The Process of “Beating.” The Dyeing and Colouring of Paper Pulp. Paper Mill Machinery. The Deterioration of Paper. Bibliography. Index.

Wood Pulp. Charles F. Cross, B.Sc., F.I.C. ; E. J. Bevan, F.I.C., and R. W. Sindall, F.C.S. New and Revised Edition. 8/6 net.

Contents. —The Structural Elements of Wood. Cellulose as a Chemical. Sources of Supply. Mechanical Wood Pulp. Chemical Wood Pulp. The Bleaching of Wood Pulp. News and Printings. Wood Pulp Boards. Utilisation of Wood Waste. Testing of Wood Pulp for Moisture. Wood Pulp and the Textile Industries. Bibliography. Index.

Commercial Paints and Painting. A Handbook for Architects, Engineers, Property Owners, Painters and Decorators, etc. Arthur Seymour Jennings. 224 + xii pages. 47 Illustrations. Extra Crown 8vo. 7/6 net.

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Glass Manufacture. Walter Rosenhain, D.Sc., F.R.S. Superintendent of the Department of Metallurgy in the National Physical Laboratory. 2nd and Revised Edition. 12/6 net.

Contents. —Physical and Chemical Properties of Glass. The Physical Properties of Glass. The Raw Materials of Glass Manufacture. Refractories. Furnaces. The Process of Fusion. Processes Used in the working of Glass. Bottle Glass. Blown and Pressed Glass. Rolled or Plate Glass. Sheet and Crown Glass. Coloured Glasses. Optical Glass. Miscellaneous Products.

Decorative Glass Processes. Arthur Louis Duthie. Extra Crown 8vo. 8/6 net.

Contents. —Introduction. Various Kinds of Glass in Use. Their Characteristics, Comparative Price, etc. Leaded Lights. Stained Glass. Embossed Glass. Brilliant Cutting and Bevelling. Sand-Blast and Crystalline Glass. Gilding. Silvering and Mosaic. Proprietary Processes. Patents. Glossary.

The Manufacture of Leather. Hugh Garner Bennett, M.Sc., F.C.S. , Member of the International Association of Leather Trade Chemists. Demy 8vo. 18/- net.

Contents. —Historical and Introductory Outline. The Nature of Skin. Fermentation. Hides and Skins. Water. Soaking. Unhairing. Deliming. The Tannins. The Vegetable Tanning Materials. The Analysis of Tanning Materials. The Preparation of the Tanning Liquors. The Principles of Vegetable Tanning. The Tannage of Sole Leather. The Tannage of Belting, Harness and Upper Leather, etc. The Tannage of Moroccos and Light Leathers. The Tannage of Chrome Leather. Alum and Combination Tannages. Fat, Oil and Aldehyde Tannages. The Drying of Leather. The Finishing of Sole Leather. The Currying and Finishing of Dressing Leather. Leather Dyeing. The Finishing of Light Leathers. The Finishing of Chrome Leather. The Finishing of the Alum- and Combination-Tanned Leathers. The Finishing of Fat- and Oil-Tanned Leathers. Japanned and Enamelled Leathers. The Dressing of Wool Rugs. The Analysis of Leather. Index.

Mineral and Aerated Waters, and the Machinery for their Manufacture. C. Answorth Mitchell, B.A. (Oxon.), F.I.C. Demy 8vo. 9/- net.

The Chemistry and Technology of Printing Inks. Norman Underwood and Thomas V. Sullivan . Medium 8vo. 12/6 net.

Materials for Permanent Painting. A Manual for Manufacturers, Art Dealers, Artists and Collectors, explaining the Composition of the Materials used in Painting. M. Toch, F.C.S. Frontispiece in Colour and other Illustrations. Crown 8vo. 8/- net.

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Materials Used in Sizing. W. F. A. Ermen. 6/- net.

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The Nitrocellulose Industry. Edward Chauncey Warden, Ph.C., M.A., F.C.S. 2 Volumes ( See p. 44. ) 50/-.

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The Chemistry of Dyeing and Bleaching of Vegetable Fibrous Material. Julius Hübner, M.Sc.Tech., F.I.C. ( See p. 44. )

Cork: Its Origin and Industrial Uses. Gilbert E. Stecher. Crown 8vo. 6/- net.

Wool. Frank Ormerod. Demy 8vo. Illustrated. 6/6 net. ( See p. 3. )

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The Potter’s Craft. A Practical Guide for the Studio and Workshop. Charles F. Binns , late Superintendent Royal Porcelain Works, Worcester. With 42 Illustrations. Crown 8vo. 7/6 net.

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Arts and Crafts.

Photography: Its Principles and Applications. Alfred Watkins, F.R.P.S. , Past President Photographic Convention. Demy 8vo. 340 pages. 100 Illustrations. 12/6 net. 2nd Revised Edition.

Contents. —First Principles. Lenses. Exposure Influences. Practical Exposure. Development Influences. Practical Development. Cameras and Dark Room. Orthochromatic Photography. Printing Processes. Hand camera Work. Enlarging and Slide Making. Colour Photography. General Applications. Record Applications. Science Applications. Plate Speed Testing. Process Work. Pinhole Photography.

Simple Jewellery. A Practical Handbook with Certain Elementary Methods of Design and Construction. Written for the use of Craftsmen, Designers, Students and Teachers. R. Ll. B. Rathbone. 2nd Edn. In preparation.

Precious Stones. W. Goodchild, M.B., B.Ch. With a Chapter on Artificial Stones by Robert Dykes . With 42 Illustrations. Extra Crown 8vo. 7/6 net.

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Business and Management.

Advertising: A Study of a Modern Business Power. G. W. Goodall, B.Sc. With an Introduction by Sidney Webb, LL.B. Paper, 1/6.

Storing: Its Economic Aspects and Proper Methods. H. B. Twyford. Author of “Purchasing.” Large Demy 8vo. 21/6 net.

Purchasing: Its Economic Aspects and Proper Methods. H. B. Twyford , of the Otis Elevator Company. 112 Charts, Diagrams and Forms. Large Demy 8vo. 252 pages. 26/- net.

Seasonal Trades. Arnold Freeman, B.A. , and Sidney Webb . With a Bibliography of each Trade. 7/6 net.

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Commerce and Industry. Edited by William Page, F.S.A. With a Preface by Sir William Ashley, M.A., Ph.D. Each volume is sold separately.

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Primer of Scientific Management. F. B. Gilbreth, M.Am.Soc.M.E. , with an Introduction by Louis D. Brandeis. 9/- net.

Motion Study. A Method for Increasing the Efficiency of the Workman. F. B. Gilbreth, M.Am.Soc.M.E. 9/6 net.

Useful Handbooks and Tables, etc.

The Practical Mechanic’s Handbook. F. E. Smith. 8/- net. ( See p. 51. )

Materials Used in Sizing. W. F. A. Ermen. ( See p. 54. )

Reference Book for Statical Calculations. Francis Ruff. Crown 8vo. 160 Illustrations. Charts and Diagrams. 4/- net.

The New Steam Tables. Calculated from Professor Callendar’s Researches. Professor C. A. M. Smith, M.Sc. , and A. G. Warren, S.Sc. 4/6 net.

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Handbook for the Care and Operation of Naval Machinery. Comr. H. C. Dinger , U.S. Navy. 436 pages. 150 Illustrations. Pocket size. 21/- net. 3rd Edn. Revised.

Contents. —Operation of Naval Machinery. Care and Overhaul of Main Plant. Fittings and Auxiliaries. Care and Preservation of Subdivision of Hull. Special Auxiliary Engines. Spare Parts. Tests of Machinery and Piping.

The Law affecting Engineers. W. Valentine Ball, M.A.(Cantab.) , Barrister-at-Law, Joint Editor of “Emden’s Building Contracts.” Demy 8vo. 10/6 net.

A concise statement of the powers and duties of an engineer, as between employer and contractor, as arbitrator and as expert witness, together with an outline of the law relating to engineering contracts, and an appendix of forms of contract, with explanatory notes.

Lettering. For Draughtsmen, Engineers and Students. C. W. Reinhardt. 14th Edn. Revised and Enlarged. 10/- net.

Contents. —Inclined and Upright Lettering: Lower-case Letters. Capital Letters, Numerals. Extending Form. Freehand Lettering Applied to Working Drawings. Various Freehand Alphabets. Greek Alphabet. Lettering of Titles. Practice Sheets, Round Writing. Lettering for Photo-reproduction.

Natural History, Botany, Nature Study, etc.

Extinct Animals. Sir E. Ray Lankester, F.R.S. With a Portrait of the Author and 218 other Illustrations. New and Revised Edition in preparation. Extra Crown 8vo.

Economic Zoology and Entomology. Vernon L. Kellogg and C. W. Doane . Crown 8vo. 6/6 net.

The authors are well known as clear and precise exponents of their subject. In his text-book they have produced an introduction both to general zoology as well as to that specific phase of it called “economic.”

The first chapters introduce the reader to general facts of animal structure and life and are arranged on the basis of accepted pedagogic principles. The latter chapters, arranged on a basis of animal classification proceeding from the samples to the nine highly developed groups, include not only general facts pertaining to the groups treated, but introduce and give general attention to the economic relations of the various members of the groups. Finally, there is presented a form of encyclopædic treatment of a wide range of facts wholly economic in aspect.

Distribution and Origin of Life in America. R. F. Scharff, B.Sc., Ph.D., F.L.S. Fully Illustrated. Large Crown 8vo. 10/6 net.

European Animals: Their Geological History and their Geographical Distribution. R. F. Scharff, B.Sc., Ph.D., F.L.S. Fully Illustrated. Demy 8vo. 7/6 net.

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Plant Physiology and Ecology. Frederic Edward Clements, Ph.D. , Professor of Botany in the University of Minnesota. With 125 Illustrations. Demy 8vo. 12/- net.

The Living Plant. A Description and Interpretation of its Functions and Structure. William F. Ganong, Ph.D. Fully Illustrated. 465 + xii pages. 15/- net.

Plants and their Uses. An Introduction to Botany. F. L. Sargent. 612 pages. 384 Illustrations. Crown 8vo. 7/6 net.

The Flower and the Bee. Plant Life and Pollination. John H. Lovell. Extra Crown 8vo. Profusely illustrated by Photographs taken by the Author. 10/6 net.

A popular exposition, suitable to amateur gardeners, bee-keepers and lovers of nature generally.

Life Histories of Northern Animals. An Account of the Mammals of Manitoba. Ernest Thompson Seton , Naturalist to the Government of Manitoba. In 2 volumes. Large 8vo. Over 600 pages each. With 70 Maps and 600 Drawings by the Author. 73/6 net.

Influences of Geographic Environment. E. C. Semple , Author of “American History and its Geographic Conditions.” Medium 8vo. 700 pages. 21/- net.

Outlines of Evolutionary Biology. Arthur Dendy, D.Sc., F.R.S. , Professor of Zoology in the University of London (King’s College); Zoological Secretary of the Linnean Society of London; Honorary Member of the New Zealand Institute; formerly Professor of Biology in the Canterbury College (University of New Zealand), and Professor of Zoology in the South African College, Cape Town. 2nd Edn. Enlarged. 4th Impression, with a Glossary. Fully Illustrated. 15/- net.

Agriculture, Farming and Forestry.

Agriculture and Irrigation. Kinsley D. Doyle. Demy 8vo. 288 pp. 19/- net.

Contents. —The Soil. Fertilizers. Irrigation. Wells and Pumping. Dry Farming and Economics. Pastures, Natural and Artificial. Notes on Forests, Cattle, Pigs and Carobs. Runs and Farms for Sheep and Ostriches. Cereals. Apples. Asparagus. Onion and Potatoes. Citrus Orchards. Grapes, Walnuts and Pistachio Nuts. Some Special Industries. Some Tropical Fruit. Tropical Plantations. Planting and Sowing for Oil. Tropical Agriculture.

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Dairy Laboratory Guide. C. W. Melick, B.S.A., M.S. Crown 8vo. With 52 Illustrations.

Soils and Manures. J. Alan Murray, B.Sc. Extra Crown 8vo. 8/6 net.

Contents. —Preface. Introductory. The Origin of Soils. Physical Properties of Soils. Chemistry of Soils. Biology of Soils. Fertility. Principles of manuring. Phosphatic Manures. Phospho-Nitrogenous Manures. Nitrogenous Manures. Potash Manures. Compound and Miscellaneous Manures. Potash Manures. Compound and Miscellaneous Manures. General Manures. Farmyard Manure. Valuation of Manures. Composition and Manurial Value of Various Farm Foods. Index.

The First Book of Farming. Charles L. Goodrich. With 87 Illustrations. Crown 8vo. 7/6 net.

Contents. —General Principles Underlying Plant Culture. Introduction to Plants. Roots. Soils. Relation of Soils to Water. Forms of Soil Water. Loss of Soil Water. Soil Temperature. Plant Food in the Soil. Seeds. Planting. Spading and Ploughing. Harrowing and Rolling. Leaves. Stems. Flowers. Soil Fertility as Affected by Farm Operations and Farm Practices. Fertile Soils. Soil Water. After-Cultivation of Crops. Farm Manures. Commercial Fertilizers. Rotation of Crops. Farm Drainage. Glossary.

Commercial Egg Farming. S. G. Hanson. Crown 8vo. Illustrated. 7th Impression. 1/9 net.

A practical handbook based on the experience of the successful poultry farmer. Deals with breeding, incubating, brooder-house management, colony houses, laying houses, and the co-operative marketing of eggs. Tables showing outlay required for establishing farms of various sizes are included.

Utility Ducks and Geese. Their successful Rearing, Management, and Marketing. J. W. Hurst , Poultry Correspondent of “The Field.” Crown 8vo. Illustrated. 2/6 net.

Insect Pests and Plant Diseases in the Vegetable and Fruit Garden. F. Martin Duncan, F.R.M.S., F.R.P.S. , Author of “Our Insect Friends and Foes,” “Wonders of Insect Life,” “Cassell’s Natural History,” etc. Crown 8vo. Illustrated. 3/6 net.

The object of this little book is to give in as brief and concise a form as possible a simple account of those Insect Pests and Plant Diseases with which the Allotment-holder and Gardener will be most likely to meet in the course of their labours. Keeping in mind that this work is intended for the help of the Amateur, care has been taken so far as possible to avoid the use of technical terms, and to explain their meaning when it was considered necessary.

Farm Animals: How to Breed, Feed, Care For and Use Them. E. V. Willcox, Ph.D., M.A. , U.S.A. Department of Agriculture. With over 60 Full-page Illustrations. Demy 8vo. 10/- net.

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Coniferous Trees. Being a Concise Description of each Species and Variety, with the most recently approved Nomenclature, list of Synonyms, and best Methods of Cultivation. A. D. Webster , Author of “Practical Forestry,” “The Forester’s Diary,” etc. Demy 8vo. 320 pages. 28 Plates. 21/- net.

A complete manual on conifers, with chapters on the economic aspect, the quality and value of British grown timber, soils and situations most suited to the trees, their characteristics, means of propagation and the enemies to which they are subject.

Estate Economics. Andrew Slater , Gold Medallist of the Highland and Agricultural, and of the Royal Scottish Arboricultural Societies; late Land Agent to the War Department in the Southern, Northern, and Scottish Commands; and previously Land Steward to their late Majesties Queen Victoria and King Edward at Osborne. Demy 8vo. Fully Illustrated. 10/- net.

Contents. —The Origin of Soils. The Drainage of Soils. Embanking of Rivers. Roads, etc.: Their construction and Maintenance. Fences and Gates, etc.: Division (1) Preliminary; (2) Hedges; (3) Walls; (4) Wooden Fences; (5) Gates, etc. Building, etc.: Division (1) Preliminary; (2) Hay Sheds; (3) Sheep Folds; (4) Motive Power. Water Supplies. Sewage Drains, etc. The Utilisation of Land: Division (1) Preliminary; (2) Manuring; (3) Cultivation; (4) Permanent Pastures; (5) Hay Meadows; (6) Water Meadows; (7) Orchards; (8) Upland Pastures; (9) Reclamation of Land. Motor Traction. Forestry: Division (1) Preliminary; (2) The Tree and its Life History; (3) British Forest Trees; (4) The Nursery; (5) The Formation of Woodland Crops; (6) The Management of Woodland Crops; (7) The Treatment of Matured Woodland Crops; (8) The Disposal of Woodland Crops; (9) The Valuation of Woodland Crops; (10) Forest Working Plans; (11) General; (12) The Preservation of Timber.

Forests, Woods and Trees in Relation to Hygiene. Augustine Henry, M.A., F.L.S., M.R.I.A. , Professor of Forestry, Royal College of Science, Dublin. Demy 8vo. Fully Illustrated with Maps and Photographs. 18/- net.

Contents. —The Influence of Forests on Climate. The Sanitary Influence of Forests. Forests as Sites for Sanatoria. Parks in Town and Municipal Forests. Trees in Towns. Afforestation of Pit Mounds. Afforestation of Water Catchment Areas. Conditions affecting the Planting of Water Catchment Areas. Trees for Water Catchment Areas and for General Planting. Water Catchment Areas in England and Wales. Water Catchment Areas in Scotland. Water Catchment Areas in Ireland. Index.

Indian Trees. An Account of Trees, Shrubs, Woody Climbers, Bamboos and Palms, Indigenous or Commonly Cultivated in the British Indian Empire. Sir Dietrich Brandis, K.C.I.E., Ph.D.(Bonn), LL.D.(Edin.), F.R.S., F.L.S., F.R.G.S. , and Hon. Member of the Royal Scottish Arboricultural Society, of the Society of American Foresters, and of the Pharmaceutical Society of Great Britain. Assisted by Indian Foresters. New Edition in Preparation. 40/- net.

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Law, Patents, etc.

Building in London. A Treatise on the Law and Practice affecting the Erection and Maintenance of Buildings in the Metropolis. Horace Cubitt, A.R.I.B.A. , etc. Illustrated, with Diagrams. 31/6 net.

Industrial Accidents and their Compensation. G. L. Campbell, B.S. Crown 8vo. 12/- net.

The Law affecting Engineers. W. Valentine Ball, M.A.(Cantab.) , Barrister-at-Law, Joint Editor of “Emden’s Building Contracts.” Demy 8vo. 10/6 net.

Henslowe’s Motor Dictionary. Compiled by Leonard P. Henslowe. English-French, French-English. Contains British and Metric Units of Measurement.

Foreign and Colonial Patent Laws. W. Cranston Fairweather , Chartered Patent Agent. Demy 8vo. 10/6 net.

Patents, Designs and Trade Marks. The Law and Commercial Usage. Kenneth R. Swan, B.A.(Oxon.) , of the Inner Temple, Barrister-at-law. Extra Crown 8vo. 7/6 net.

The Arbitration Clause in Engineering and Building Contracts. E. J. Rimmer (Barrister-at-Law), M.Inst.C.E. , etc. Crown 8vo. 2/- net.

Miscellaneous.

Dictionary of British Scientific Instruments. Prepared by the British Optical Instrument Manufacturers’ Association . Demy 8vo. Fully Illustrated. 21/- net.

The British in China, and Far Eastern Trade. C. A. Middleton Smith, B.Sc., A.M.I.M.E. Demy 8vo. 18/- net.

Forecasting Weather. Sir W. N. Shaw, F.R.S., Sc.D. , etc., Director of the Meteorological Office, London. New Edition in Preparation.

Clouds. A Descriptive Illustrated Guidebook to the Observation and Classification of Clouds. George Aubourne Clarke, F.R.P.S., F.R.Met.Soc. With a Preface by Sir Napier Shaw, LL.D., Sc.D., F.R.S. , Director of the Meteorological Office. Demy 8vo. 148 pp. Illustrated. 21/- net.

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Town Planning in Madras. A Review of the Conditions and Requirements of City Improvement generally and Development in the Madras Presidency in particular. H. V. Lanchester, F.R.I.B.A., M.T.P.I. , etc. 4to. 124 pages Text. 66 Full-page and 13 Folding Plates. 12/6 net. ( See p. 31. )

Soft Soldering, Hard Soldering, and Brazing. A Practical Treatise on Tools, Materials, and Operations, for the use of Metal Workers, Plumbers, Tinners, Mechanics and Manufacturers. James F. Hobart, M.E. 203 pages. 62 Illustrations. 9/6 net.

Perspective. An Elementary Text-Book. B. J. Lubschez, M.Am.I.A. 88 pages. 32 Illustrations. 6/- net.

Public Health Chemical Analysis. Robert C. Frederick , Analytical Assistant to the Professor of Hygiene, Royal Naval College, Greenwich, and Aquila Forster, Ph.D., M.Sc., A.I.C. , Research Chemist, Research Department, Royal Arsenal, Woolwich. Demy 8vo. 305 pp. Illustrated. 21/- net.

Contents. —Introductory. Air. Water. Sewage, etc. Milk and Cream. Butter and Margarine. Lard. Carbohydrates. Proprietary Foods. Rice. Alcoholic Liquors. Baking Powders. Tea, Coffee, etc. Metallic Poisons in Food-Stuffs. Disinfectants. Soap. Rag Flock. Appendix. Index.

Colour and Its Applications. M. Luckiesh , Physicist, Nela Research Laboratory, National Lamp Works of General Electric Co. 129 Illustrations, including 4 Plates in Colour. 18/- net.

Light and Shade and Their Applications. M. Luckiesh. Medium 8vo. 280 pages. 135 Illustrations and Tables. 15/- net.

Natural Rock Asphalts and Bitumens. Their Geology, History, Properties and Industrial Application. Arthur Danby , Chemist and Public Consultant on Rock Asphalt and Bitumen. Crown 8vo. 244 + ix pages. 8/6 net.

Contents. —Nomenclature and Definitions. Geology of Bitumen and Rock Asphalt. Appearance and Physical Structure. History and Ancient Use. Modern Exploitation of Rock Asphalt. Sources of Rock Asphalt and Bitumen. American Deposits of Bitumen. Extraction and Preparation of Rock Asphalt. Tests and Analyses. Physical Properties of Rock Asphalt. The Carrying Out of Rock Asphalt Work, and of Rock Asphalt Mastic Work. Macadam Roads. Other Uses of Bitumen.

Water, its Purification and Use in the Industries. W. W. Christie, M.Am.S.M.E., M.Am.S.C.E. 230 pages. 79 Illustrations. 12/6 net.

Time and Clocks. A Description of Ancient and Modern Methods of Measuring Time. H. H. Cunynghame, M.A., C.B. Crown 8vo. 3/6 net.

Structural Geology. C. K. Leith. 169 + viii pages. 68 Illustrations. Demy 8vo. 8/6 net.

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Seasonal Trades. Arnold Freeman, B.A. , and Sidney Webb . With a Bibliography of each trade. 7/6 net.

Industrial Engineering: Its Present Position and Post-War Outlook. F. W. Lanchester, M.Inst.C.E. Crown 8vo. Paper, 1/- net.

The Limitations of Science. Louis T. More, Ph.D. , Professor in the University of Cincinnati. Crown 8vo. 6/6 net.

Contents. —Science as a Symbol and a Law. The Metaphysical Tendencies of Modern Physics. Descartes and his Influence on Recent Science. The Scientific Method. The Classical and the New Mechanics. Scepticism and Idolatry in Science. Science as the Arbiter of Ethics. Index.

The Seven Follies of Science. John Phin. A New and Enlarged Edition. Demy 8vo. 15/- net.

A popular account of the most famous scientific impossibilities, and the attempts which have been made to solve them. To which is added a small budget of interesting paradoxes, illusions and marvels.

The Claims of Labour and of Capital. W. R. Cooper. Crown 8vo. 2/6 net.

Terms of Industrial Peace. Alex. Ramsay. Crown 8vo. 3/6 net.

A vigorous and well-informed survey of the relations existing between Capital and Labour. The author emphasises the necessity of industrial peace in view of the need for greater productive power in this country, and outlines a scheme for the avoidance and settlement of disputes.

British Railways. A Financial and Commercial Study. W. R. Lawson , Chairman of the Railway Shareholders’ Association. 320 + xxxii pages. Extra Crown 8vo. 6/- net.

The Sea Fisheries. J. T. Jenkins, D.Sc., Ph.D. Royal 8vo. 24/- net. Very fully Illustrated.

Contents. —Statistical Methods. The Collection of Statistics. Methods of Fishing. The Trawling Grounds. Consideration of Individual Fish. The Rise of the Herring Fisheries. The Development of Steam Trawling. Legislation and the Sea Fisheries. The Inshore Fisheries. Public Fisheries for Shellfish. The Education of Fishermen. Science and the Sea Fisheries. State Aid and Fishery Research. Foreign and Colonial Fisheries and their Administration.

A Text-Book of Oceanography. J. Travis Jenkins , Author of “The Sea Fisheries.” Demy 8vo. 256 pp. Illustrated. 15/- net.

Contents. —Introduction. Extent of the Ocean. Classification of the Oceans and Seas. Sea Level. Hydrographical Curve of the Earth’s Surface. General Features of the Ocean Bottom. Ocean Deeps. Oceanic Deposits and Bottom Fauna. The Temperature of the Sea. The Properties of Sea-Water. Sea-Ice. Icebergs. Atmospheric Gases in Sea-Water. Sea-Water as a Food Solution for Plants. Salinity. Waves. The Tides. Ocean Currents. Appendices.

The Curves of Life. Being an Account of Spiral Formations and their Application to Growth in Nature, to Science, and to Art. Sir Theodore Andrea Cook, M.A., F.S.A. 415 Illustrations and 11 Plates. Royal 8vo. 470 + xxxii pages. 12/6 net.

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The World’s Meat Future. An Account of the Live Stock Position and Meat Prospects of all Leading Stock Countries of the World with Full Lists of Freezing Works. A. W. Pearse, F.R.G.S. , Editor of “The Pastoral Review.” With an Introduction by Sir Owen Cox, K.B.E. Demy 8vo. 352 pages. 291 Illustrations. 2nd Ed. Price 21/- net.

Contents. —The World’s Meat Future. Summary of Meat Supplies. Trade and Empire. Australia. New Zealand. Argentina. Brazil. Uruguay. Paraguay. Chile. Patagonia. United States. Canada. Mexico. Venezuela. British Guiana. Ecuador. Colombia. Honduras. Bolivia. Peru. Rhodesia. South Africa. Madagascar. Morocco. British East Africa. South-West Africa. Egypt and Soudan. Sheep in Egypt and Southern Palestine. Nigeria. Abyssinia, Somaliland and the Cameroons. China. Siberia. The Pacific Islands (Fiji, New Caledonia, Sandwich Group). Japan. Innovation in Mutton Stowage. Dipping Cattle. Cattle Tick Eradication. Dehorning Cattle. Live and Dressed Weights. Venison. Statistical Study of Body Weights, Gains and Measurements of Steers during the Fattening Period, with Tables. List of Meat Canning and Preserving Works in Australia, New Zealand, Argentina, Patagonia, Uruguay, Paraguay, Brazil, Venezuela.

International Language and Science. Considerations on the Introduction of an International Language into Science. Translated by Prof. F. G. Donnan. Demy 8vo. 2/- net.

Good Engineering Literature. Harwood Frost, M.Am.Soc.M.E. Crown 8vo. 4/6 net.

Life and Letters of Joseph Black, M.D. Sir William Ramsay, K.C.B., F.R.S. With an Introduction dealing with the Life and Work of Sir William Ramsay, by F. G. Donnan, F.R.S. Demy 8vo. 168 pages. 7 Illustrations. 6/6 net.

“A valuable contribution to scientific history.”— The Times.

Britain’s Heritage of Science. Arthur Schuster, F.R.S., and Arthur E. Shipley, F.R.S. Crown 8vo. 350 pages. 15 Portraits. 3rd Impression. 14/- net.

“This is the first attempt to give a comprehensive view of the history of British science in all its branches by men who occupy the position of authorities, and we congratulate them on the success of their efforts.”— British Medical Journal.

From Newton to Einstein. Changing Conceptions of the Universe. Benjamin Harrow, Ph.D. Foolscap 8vo. Paper. 2/6 net.

Einstein’s contributions to our ideas of time and space and to our knowledge of the universe in general must rank among the greatest achievements of the twentieth century. This little book gives a concise and lucid account of Einstein’s discoveries, but since these are so largely dependent on the work of Newton and his successors, the first two chapters are devoted to the latter.

Panama. Its Creation, Destruction, and Resurrection. Philippe Bunau-Varilla. Royal 8vo. 12/6 net.

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Messrs. Franklin and Charles’ List of Publications

Practical Physics. Franklin, Crawford and Macnutt.

Vol. I. Precise Measurements—Mechanics and Heat. 9/- net.

Vol. II. Elementary and Advanced Measurements in Electricity and Magnetism. 9/- net.

Vol. III. Photometry. Experiments in Light & Sound. 7/- net.

The Elements of Electrical Engineering. W. S. Franklin and William Esty .

Vol. I. Direct Current Machines: Electric Distribution and Lighting. 28/- net.

Vol. II. Alternating Currents. 26/- net.

Advanced Theory of Electricity & Magnetism. W. S. Franklin and Barry MacNutt . 16/6 net.

Elements of Electricity and Magnetism. W. S. Franklin and Barry MacNutt . 12/- net.

The Elements of Electrical Engineering. W. S. Franklin. A Simplified Version of the “Elements” by Franklin and Esty (see above).

Vol. I. Direct and Alternating Current Machines and Systems. 28/- net.

Vol. II. Electric Lighting and Miscellaneous Applications of Electricity. 20/- net.

A Calendar of Leading Experiments. W. S. Franklin and Barry MacNutt . 16/6 net.

The Elements of Calculus. Franklin , MacNutt and Charles . 16/6 net.

Dynamo Laboratory Manual. W. S. Franklin & William Esty.

Vol. I. Direct-Current Studies and Tests. 12/- net.

Elementary Electricity and Magnetism. W. S. Franklin and Barry MacNutt . 9/- net.

Elementary Statics. Franklin and MacNutt . 4/- net.

Bill’s School and Mine. A Collection of Essays by W. S. Franklin . 2nd Edn. 5/6 net.

Electric Waves. W. S. Franklin. 24/- net.

Lessons in Mechanics (1919). W. S. Franklin and B. MacNutt . 12/- net.

Lessons in Electricity and Magnetism (1919). W. S. Franklin and B. MacNutt . 12/6 net.