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Distortion of Metal Cylinders under the Blow of a Hammer.
Photometry of Gas-filled Incandescent Lamps. C. H. SHARP
Flame-Standards in Photometry. E. B. ROSA and E. C. CRITTENDEN
The Integrating Sphere and Arc-Lamp Photometry. N. K. CHANEY and
E. L. CLARK
Physical Photometry. H. E. IVES
Approximate Uniform Photometric Point-Source.
R. W. CHADBOURN and G. D. EDWARDS
Developments in the Projection of Light. L. C. PORTER
Choice of a Group of Observers for Heterochromatic Measurements.
H. E. IVES and E. F. KINGSBURY
Method of Correcting Abnormal Colour-Vision and its Application to the
Flicker Photometer. H. E. IVES and E. F. KINGSBURY
Mathematical Education of Engineers in Different Countries.
Practical Method of solving Integrals applied to the Determination of Static
Moments and Moments of Inertia. Dipl. Ing. R. SLABY
Supposed Influence of Mountains on Rainfall. P. M. G. QUIJANO
Computing Run-off from Rainfall and Other Physical Data. A. F. MEYER.
Distribution of Stress in Perforated Plates. A. LEON and R. ZIDLICKY
Collapse of Circular Plates. Dr. Ing. A. NÁDAI
Forces brought into Play and Energy absorbed during Stamping Processes.
Dr. Ing. H. SEEHASE.
483
484
A. E. KENNELLY,
487
Notch-Impact Tests and the Law of Similarity. R. STRIBECK
Eccentric Loading of Struts. TORBJÖRN STRAND.
Temporary Structures in Invaded Countries. MAX RINGELMAN
Engineering Problems of the Panama-Pacific Exhibition. A. H. MARK-
WART
Paints to prevent Electrolysis in Concrete Structures. H. A. GARDNER
Study of Curious Painting Phenomena. H. A. GARDNER
Protection of Buildings against Lightning. Professor Dr. E. VAN EVER-
Cinder-Concrete Floor-Construction between Steel Beams. H. PERRINE
and G. E. STREHAN
489
Simple Method of securing Dustless Concrete-Floors. P. M. BRUNER
Standard-Practice Instructions for the New York Concrete-Testing Labora-
tory. R. E. GOODWIN
1
Absorption of Water from the Air by Timber. E. ISAACHSEN
Rapid Graphic Method of Calculating Arches. A. MESNAGER
Lateral Stiffness of Lattice-Girder Bridges. Dr. J. H. A. HAARMAN
Strengthening the Kirchenfeld Bridge at Berne. Professor A. ROHN
Bascule-Bridge Acting as a Simple Truss-Span
Erection-Traveller, New Quebec Bridge. H. P. BORDEN
490
Concrete Pier-Work on the Cumberland-Valley Railway-Bridge over the
Potomac River.
Twelfth-Street Trafficway Viaduct, Kansas City, Missouri. E. E. HOWARD
Double-Deck Viaduct in Kansas City. H. H. Fox
Standard Specifications for Railway- and Tramway-Bridges in the Dutch
East Indies. Dr. J. H. A. HAARMAN
491
Construction and Working of the Rhine-Weser Canal.
Aragon-Cataluña Canal. V. DE GARCINI
Organization of a Large Municipal Highway Department. W. H. Connell
Standard Specifications for Road-Materials. M. E. H. TJADEN
Light Motor Road-Rollers. L. BORUP
Sewer-Tunnel under the Kaiser-Wilhelm Canal. FEUCHTINGER and PLATIEL
Construction of Cumberland Waterworks. F. H. EASTMAN
Rock-Fill Dam with Unusual Foundation-Problems. M. C. HINDER-
Water-Supply of Batavia. F. A. JANSSEN VAN RAAY
.
Ultra-Violet Rays for the Sterilization of Water. M. VON RECKLING-
Pumping-Plant of the Morenci Water Company. W. L. DU MOULIN
River-Regulation in Norway. O. BÖDTKER.
492
493
Electric Towing-Locomotives of the Panama Canal
494
St. John Levee and Drainage-District of Missouri. R. M. STROHL
Details of Coast- and Harbour-Works. A. POULSEN
Delft University Mechanical-Engineering Laboratory. Professor J. C.
DIJKHOORN.
495
Working Costs of Commercial Electric Vehicles. W. P. KENNEDY
Inspection in a German Ball-Bearing Factory. H. HERMANNS
496
Chart for the Design of Shafts. M. J. RICH, jun..
Friction-Losses in the Universal Joint. P. F. WALKER and W. J. MAL-
Mechanical Manufacture of Bottles. J. F. H. KOOPMAN.
497
Production of Glass for Scientific Purposes. J. BERLEMENT
Tests of High-Speed Pneumatic Drills. T. SCHWARZ .
Grinding-Machines, their Construction and Modern Requirements.
498
Pro-
fessor F. SCHWERD
Operation of Grinding-Wheels in Machine-Grinding. G. I. ALDEN
Motor-driven Vertical-Spindle Surface-Grinder.
Developments in Machine-Moulding. E. HIJMANS
Controlling the Outflow of Heavy Material from Hoppers. A. C.
Experiments to determine the Flange-Friction of Travelling-Cranes.
Electric Equipment for the Granite-Mountain Hoist. G. B. ROSENBLATT
Modern Electric Elevator and Elevator-Problems.
Mechanical Appliances of the Munich Market. K. HAUSER.
500
Ice-Making as a By-Product of Central Stations. H. COCHRAN
Electrical Operations on Planers. C. E. CLEWELL
501
Standard Planer- and Parting-Tools. L. P. ALFORD
Safety-Code for Abrasive Wheels.
Test of a 15-HP. Diesel Engine. Dr. F. MÜNZINGER
Recent Developments in the Manufacture of the Diesel Engine.
SETZ.
Charts for the Strength and Deflection of Flat Spiral Springs. J. B.
PEDDLE.
Heat-Transmission in Feed-Water Heaters and Tube-Length. LEO LOEB,
Professor of Marine Engineering, U.S.A. Naval Academy
Code of Boiler-Rules
Internal-Combustion Engines at the Berne Exhibition, 1914. Professor
P. OSTERTAG
502
H. R.
503
Some Results of a Diesel-Engine Test. Dr. E. B. WOLFF.
Horizontal Two-Stroke Otto-Cycle Diesel Engines. F. BARTH
First Large American Humphrey Pump. C. C. TRUMP
Water-Turbines at the Berne Exhibition, 1914. Dr. F. PRASIL.
504
Hydraulic-Turbine Installation at the Günther-Richter Paper-Works, Wens-
dorf, Saxony. FR. FREYTAG
Increased Efficiency as a Result of Changing from a Double- to a Single-
Runner Turbine
Advances in Turbo-Blower and Turbo-Compressor Practice.
Conditions affecting the Success of Main-Line Electrification. W. S.
MURRAY
506
Catenary Construction of New York, Westchester and Boston Railway.
S. WITHINGTON
Conversion of a 6,600-Volt Single-Phase Railway to 1,200-Volt Direct
Current.
Reinforced Concrete for Railway-Work. C. F. S. ERNST
507
German Railway Exhibits at the Baltic Exposition, Malmö, 1914.
R. ANGER
Auxiliary Locomotive-Feedwater Heater. Dr. Ing. L. SCHNEIDER
Southern Locomotive-Valve-Gear. R. S. MOUNCE.
Internal Stresses in Heat-Treated Axles. H. V. WILLE
Brake-Performance of Modern Steam Passenger-Trains.
Brake-Tests on the Dutch-East-Indian State Railways.
Correct Gear-Ratio of Tramcar-Motor Gear-Wheels. P. M. MONTIJN
Standardization of Chilled-Iron Crane-Wheels. F. K. VIAL.
Apparatus for Controlling Railway-Gauge. H. P. M. GEESTERANUS
Tests to determine Ballast-Compression under Sleepers. E. C. W. VAN
DIJK
Creosoting Sleepers. A. C. STEINMAYER
Completion of the Second Simplon Tunnel.
510
New Roof-Shield used for Driving Tunnels in Soft Earth.
511
Electric-Steam Tunnel-Crane.
Ventilation of the Tauern Railway Tunnels. SCHUMANN
Shovelling-Machine for Mine- and Tunnel-Work
Winding-Gear for the Iron-Ore Quarries of the German-Luxemburg Berg-
werk- and Hütten-Aktien-Gesellschaft in Upper Bavaria. Professor
W. PICKERSGILL
512
Allotropy as a Cause of the Metastability of Metals. Professor Dr. E.
COHEN
Foundry-Use of Non-Ferrous Scrap-Metals. F. M. PERKINS, Lieutenant
U.S.N..
513
The War and Metals. L. O. KELLOG
Application of Electricity to the Ore-Handling Industry. C. D. GILPIN
Electromagnetic Ore-Separation. I. C. CLARK.
Development of Ore-Concentration. H. A. MARVIN
Progress in Ore-Crushing Machinery. J. I. WILE.
New Chloridizing-Leaching Practice. G. A. KEEP.
Roll-Pressure in Cold-Rolling Brass. W. K. SHEPARD and G. C.
GERNER.
514
Magnetic and Other Properties of Electrolytic Iron melted in Vacuo.
T. D. YENSEN .
Recent Developments in Cast-Iron Manufacture. J. E. JOHNSON, jun.
Deteriorating Effect of Wood Concrete on Iron Conduits. Dr. W. LULOFS.
German Standard Corrugated Sheets
Heat-Treating Equipment and Methods for Mass-Production. E. A. SUVER-
515
KROP
516
Modern Steels and their Heat-Treatment.
R. R. ABBOTT
Growth and Distortion of Steel during Hardening. Dr. Ing. E. H.
SCHULZ.
Factors in Hardening Tool-Steel. J. A. MATHEWS and H. J. STAGG, jun..
Hardness-Tests of Cold-rolled Steel. W. K. SHEPARD and C. T. PORTER
Metal-Spray Processes in Engineering and Art. J. CALDER
517
Oxyacetylene Welding
Welding the Joints of Steel Gas-Mains
518
Making Steam-Headers and Steam-Separators by the Oxyacetylene Method.
R. MAWSON
Mode of Working the Rare Earths in Brazil. J. BOYER
Chilian Nitrate Industry. M. R. LAMB.
Motor-Cylinder Lubrication. G. S. BRYAN, Lieutenant U.S.N.
Tests of Solid Lubricants. Professor Dr. VON KAPFF.
519
Comparative Tests of Pure Mineral Oils with 1.5 per cent. Admixture of
Oil-dag. A. SAYTZEFF
Classification of Heating Value of American Coals. W. KENT
Clinkering of Coal. L. S. MARKS
Coal-Tar as Fuel. B. NIELSEN
Oil-Fuel in Iron and Metal Industries. H. SKOV
Wood as Fuel for Small-Boiler Firing. E. A. HOLBROOK
Production of Temperature-Uniformity in an Electric Furnace.
Gas-Producers with By-product Recovery. A. H. LYMN
Variability in Calorific Value of Producer-Gas. Dr. Ing. K. NEUMANN
Engineering Problems arising in the Transmission of Natural Gas.
J. P. FISHER
Flow of Energy. R. A. PHILIP
520
A. W.
521
522
Displacement of Air in Closed Transformer-Rooms.
Electric Strength of Air. J. B. WHITEHEAD
T. ROSSKOPF
Corona produced by Continuous Potentials. S. P. FARWELL
Comparison of Calculated and Measured Corona-Loss Curves. F. W.
PEEK, jun..
523
Use of Reactance with Synchronous Converters. J. L. McK. YARDLEY
Distortion of Alternating-Current Wave caused by Cyclic Variation in
Resistance. F. BEDELL and E. C. MAYER.
Oil Circuit-Breakers: Arc-Phenomena and Tendencies in Design. K. C.
RANDALL
524
Reluctance of Some Irregular Magnetic Fields. J. F. H. DOUGLAS
Theoretical and Experimental Consideration of Electrical Precipitation.
A. F. NESBIT
Practical Applications of Electrical Precipitation and Progress of the
Research Corporation. L. BRADLEY
525
Apparatus for Measuring Electrical Conductivity above 1,500° C. of Vapours
at Normal Pressure. E. F. NORTHRUP
High-Temperature Investigation and a Study of Metallic Conduction.
E. F. NORTHRUP
Industrial Control in the Foundry. R. H. MCLAIN
Direct-Current Control for Hoisting-Equipment in Industrial Plants.
W. T. SNYDER.
526
Steel-Mill Controllers from the Operator's Standpoint. J. S. RIGGS
Alternating-Current Controllers for Steel-Mills. A. SIMON
Classification of Alternating-Current Motors. V. A. FYNN
Pressed-Steel Electric-Traction Motors
527
Proportioning of Railway-Motor Resistances. A. M. BUCK
Advantages and Limitations of Railway-Motor Ventilation. R. E. HELL-
MUND
New York Municipal-Car General Equipment
Circle-Diagram for Unsymmetrical Loading of Alternators. Dr. Ing. L. G.
STOKVIS.
Test-Resistances for Large Electric Generators. N. C. JUUL
528
Insulator-Depreciation and Effect on Operator. A. O. AUSTIN