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Some Economic and Æsthetic Aspects of Electrochemistry

A Revaluation of Values in the Light of Modern Science

By E. F. Roeber

The Kinematograph in Research

The Face and the Skull

The Scientific Reconstruction of the Features of the Face from the Underlying Bone

By Kollmann

Self-Contained Portable Electric Mine Lamps

Gain in Safety, Convenience and Current Cost, as Compared with Oil Lamps

By H. O. Swoboda

Microscopical and Colloidal Examinations of Jams

The Difficulty of Detecting Adulterations

By Ernest. Marriage

British Aeroplane Building

Improvements in Radiotelegraphy and Radiotelephony—III

A Review of Some Recent Patents

By W. H. Eccles

Protection of Battleships During Darkness, The Varron of the Ox, and more

Some American and European Types of Electric Cold Saws

Recent Designs Illustrated

By Frank C. Perkins

Series Discharge Tubes

By H. Greinacher

Fraudulent Playing Cards

By Friedrich Januschke

The Development of the Aeroplane—II

What Experiment and Scientific Cesearch Have Done for the Advancement of Aviation

By R. T. Glazebrook

Circuit-Breaker-Bell Alarm


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