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Features

The Adams Gas Process

Millstones

The Invention of the Microphone

Preparation of Iron Fuels

An Hour with Edison

Unsinkable Steam Vessels

A Simple Fire Escape

Milk as a Substitute for Blood Transfusion

Lever and Cam Valve

An Ingenious Toy

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

Cross' Improved Gas Condenser

Improved Beehive

The Swiss House at the Paris Exposition

Astronomical Notes - July 13, 1878

By Berlin H. Wright

The St. Benoit Twins

Curious Hedge figures

The Leona Goat Sucker

Departments

  • Departments

    Business and Personal - July 13, 1878

  • Notes and Queries - July 13, 1878

  • New Books and Publications - July 13, 1878

  • Index of Inventions - July 13, 1878

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July 13, 1878

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