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Features

The Paris Exhibition—The Central Entrance and Dome

The Paris Exhibition—The Illuminated Fountains

The Stripping of Films from Gelatine Negatives for Photo -Mechanical Processes

Armor for Ships

Water-Tube Boilers for Warships

By J. I. Thornycroft

Plant and Material of the Panama Canal

By William Plumb Williams

Nails from Tin Scrap

By Oberlin Smith

The Type-Printing Telegraph

The Tele-Inductor

Jacobi, the Inventor of Electrotyping

Note on the use of Geissler's Tubes for Detecting Electrical Oscillations

On Flame

By F. J. Rowan

Sulphonal

The Habits of Thalessa and Tremex

By C. V. Riley

A Gigantic Earthworm

A Simple Astronomical Instrument

By Hugh D. Vail

Rice Culture in Central China

By B. J. Franklin

Sponges

Building Plans and Specifications

Useful Engineering Books

Departments

  • Departments

    Patents- June 8, 1889

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Know Before You Vote