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Space & Physics
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Stereoscopic Methods of Surveying
The use of the Periscope in Submarine Torpedo Boats
Locomotive Superheaters—Practical Difficulties in the use of Superheated Steam
Why Brass Valves Leak
Safety Catch for Doors
Specific Heat of Superheated Steam
The Intensity of Pressure of Wheels on the Road
The Journaux Tractocycle
The Specific Heat of Iron at High Temperatures
The Governing of Gas Engines
Reservoir, Fountain, and Stylographic Pens—VI
By James P. Maginnis
Manufacture of Gun-Cotton
The Champagne industry
By Consul J. Martin Miller
Mechanical Features of some of the Winning Cars in the Automobile Club of America's Two-Gallon Fuel Contest
Marvels of Minute Writing
What is an Alloy?
By A. Humboldt Sexton
The Ohm, Volt, and Ampere
Electric Furnace for Research Work at High Temperatures
The Telephone System of the Future—The Semi-Automatic
By Le Roy W. Stanton
A Low-Resistance Thermo-Electric Pyrometer and Compensator
By William H. Bristol
Times and Places of Earthquakes
By H. H. Turner
Stereoscopic Examination of Bank Notes
Trade Notes and Formulæ
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