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Features

Completion of the Pennsylvania Double Tunnels

A 21½-Knot Battleship

The Status of the Liquid Barretter

Panama Canal to be Built by Contract

Something about Cereal Breakfast Foods

The Need and the Testing of Pure Drugs

By Hugo Erichsen

A Retrospect of the Vanderbilt Cup Race

The Canadian Pacific Railway Company's Irrigation Project

By Kittredge Wheeler

Photographing a Devil Fish--The Chameleon of the Sea

By Charles Frederick Holder

An Electric Powderless, Smokeless, Flashless, and Soundless Gun

By Obed C. Billman

Apparatus for Mixing Different Grades of Rice

A New Method of Propelling a Ship

Sound Deflector for Pianos

Means for Facilitating the Cleansing of Street Catch Basins

Business and Personal Wants

Departments

  • Departments

    Science Notes

  • Correspondence

  • Recently Patented Inventions

  • Notes and Queries

  • New Books, Etc.

  • Index of Inventions

  • Patents

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October 20, 1906