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An Unforseen Function of the Beard of Wheat

Some Alloys Suitable for Instrument Work—II

A Neglected Field for Investigation

By W. Rosenhain

Wood Waste Utilization

The Industry in its Relation to Expert Advice

By John E. Teeple

The Work of Filing

Aids to Navigation on the Missouri River

Concrete Piles Employed in Dam Construction

By Frank C. Perkins

The use of Relief Maps in Mine Surveying

A Realistic Model often more Helpful than a Plane Chart

By H. G. Henderson

The Cleveland Fly Campaign

A Scientific Battle against Disease-Carriers

By Jean Dawson

Medical Men as Geologists

The Claude Process for Reproducing Drawings

By the Paris Correspondent of the Scientific American

The World's Greatest Cable Tested

The Harlé Steam Reservoir

Power from Kerosene

A System whereby Oil, Kerosene and Distillates are used in the Ordinary Type of Gas Engine

By L. W. Ellis and W. R. Dray

The Significance of Spectroscopy for the Atomistic Theory

A Rational Theory Wanted to Correlate Observed Facts

By C. Runge

Legibility of Colored Advertisements

The Micro Indicator

Photographing Sound

A Fine Demonstration of Wave Motion

By Arthur L. Foley and Wilmer H. Souder

Lugs, Facings and Bosses

By Francis W. Shaw


An Automatic Longitudinal Stabilizer for Aeroplanes


  • Letters

    Correspondence - February 15, 1913

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