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Gunboats, The Torpedo Boat Problem

Sugar Making in Louisiana

An Ingenious Vent Peg

Ferdinand de Lesseps--Chief Promoter of the Suez Canal

An Improved Hoisting Pulley Wanted

American and English Railway Practice Contrasted

Boiler Covering

By C. M. O'hara

Patent Decision

Girard's "Palier Glissant"

A Happy New Year!

Tubular Boilers and Boiler Explosions

The Suez Canal Not Yet a Failure

The American Institute Prizes Awarded to Steam Engines

American Railway Management

A Protest Against the Canadian Patent Law

Professor Fiske's Lectures at Harvard

The Brighter Side

The Battle Fields of Science

Scientific Lectures before the American Institute

Editorial Summary

What the Newspapers Say

How French Bank Notes are Made

A Novel French Hand Vise

The Woven-Wire Mattress

The Stevens Breech-Loading Rifle

Preservation of Iron

By Henry E. Colton

The Bananas and Plantains of the Tropics

Paper for Building

The Magic Lantern

Putting up Stoves

By Mark Twain

Improvement in Lamp Wicks

Answers to Correspondents

Recent American and Foreign Patents

Under this heading we shall publish weekly notes of some of the more prominent home and foreign patents.

Official List of Patents

Issued by the Untied States Patent Office. For the Week Ending Dec. 14, 1869. Reported Officially to the Scientific American.

U. S. Patent Office

How to Obtain Letters Patents NEW INVENTIONS Information about Caveats, Extensions, Interferences, Designs, Trade Marks; also, Foreign Patents.


  • Letters

    Correspondence- January 1, 1870

  • Recommended

    New Books and Publications- January 1, 1870

  • Departments

    Business and Personal- January 1, 1870

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January 01, 1870

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