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The Manufacture and Application of Nitrous Oxide

By A. S. Neumark

Soluble Gunpowder

By F. Raschig

How to Make Quartz Fiber

The Finest and Strongest Suspension Known

By C. C. Hutchins

Welding by Electricity

The Most Expeditious and Satisfactory Method for General Practice

The Correlation between Sunspots and the Weather

The Evidence of Periodic and Abnormal Occurrences

By A. Gockel

Surface Combustion

A Radical Innovation in Industrial Heating Practice

By W. A. Bone

The Preservation of our Fish Supply

The Banks on Our East Coast and Their Origin

By George Carroll Curtis

New Year's Celebrations in Japan, Formation of the Earth's Surface

The Permeagraph

A Graphical Machine for the Magnetic Testing of Iron and Steel

By Nathan C. Johnson

Scientific Foot Treatment for the Army

Trying on Shoes by X-Rays

Lubrication Problems in Gasoline Engines

High Temperature of Cylinders Makes Special Demands on Oil Employed

By M. R. von K*amp*eacute;ler

Radiotherapy, Action of Ultra-violet Rays on Vegetation


  • Letters

    Correspondence - August 17, 1912

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