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Pœtsch's Method of Sinking Mine Shafts

The use of Torpedoes in War

By E. P. Gallwey

Explosive Forces in Gas Engines

Isaac Newton

Capillary Attraction

Jules Jamin

Du Rocher's Electric Megaloscope and Pile

Electrical Deposition of Fumes

By F. L. Bartlett

Sound and Color

Radii of Curvature Geometrically Determined

By C. W. Maccord

Cylinder Box-Nailing Machine

Machine for Testing Chains

Hinged and Balanced Lamp-Post


By William H. Brewer

Stereotype Machine

A New Law of Thermo-Chemistry

By George F. Becker

Instantaneous Photographs of the Heart in Motion, and of Peristalsis

By William Gilman Thompson

An Improved Appliance in Physiological Treatment of Cleft Palate

By Henry A. Baker

Bovine or Humanized Virus?—A Model Vaccine Farm

By Roberts Bartholow

The Forms and Heights of Clouds

The Phosphate Mines of Canada

By Beau Mont

Crease Dirt: what it Is

The Earth and the Comets

A New Gold Mine in Asia

A New Thief-Trap

A Prospect for Railways in China

An Amateur Astronomer

Candelabra Cactus and the California Woodpecker


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April 17, 1886

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