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The Adams Gas Process

The Invention of the Microphone

Preparation of Iron Fuels


An Hour with Edison

Unsinkable Steam Vessels

An Ingenious Toy

Lever and Cam Valve

Milk as a Substitute for Blood Transfusion

A Simple Fire Escape

Communication - July 13, 1878

The Etiology of Asiatic Cholera.--a New Theory

By Bellerophon

Proposed Process for the Fixation of Atmospheric Nitrogen

By John Blair

Improved Beehive

Cross' Improved Gas Condenser

Astronomical Notes - July 13, 1878

By Berlin H. Wright

The Swiss House at the Paris Exposition

The St. Benoit Twins

Curious Hedge figures

The Leona Goat Sucker


  • Departments

    New Books and Publications - July 13, 1878

  • Notes and Queries - July 13, 1878

  • Business and Personal - July 13, 1878

  • Index of Inventions - July 13, 1878

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