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A Design for an Electric Automobile Vehicle

By Charles T. Child

Improved Turret Lathe

The Self-Mixing Gas Burner

Shaving Soaps

Diamonds in Meteorites

The Decorah Ice Cave and its Explanation

By Alois F. Kovarik


Flame Gases and Electric Discharge

Electrical Notes

Engineering Notes

Selected Formulæ

The Prevention of Camp Diseases

The Stomach and the Phonendoscope

Spontaneous Analysis of Gunpowder

Superficial Tension and Capillary Phenomena

Present Status of Electrical Engineering

The Value of the Meter in Feet and Inches in Different Countries


Porto Rican Antiquities


  • Birds of Prey in the Zoological Gardens of Cologne

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November 26, 1898