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Features

Elastic Metallic Rocking Chair

Improved Extension Table

Facts About the River Amazon.--Steam Navigation and Railroads

Poetry and Patents

Dyers' Recipes

From Haserick's Secrets of Dyeing.

The Ancient Brewers of New York

Oak Graining

[Condensed from the Builder.]

Pyrometer

Perpetual Motion- February 25, 1871

W. Mattieu Williams on the Bessemer Process

From Nature.

Interesting School Statistics

[CHIEFLY FROM MR. KIDDLE'S ANNUAL REPORT.]

Hand Sewing Machine

Electro-Metallurgy

Toughening and Refining Gold

The Largest Gun in the World

The Hudson River Railroad Disaster

A Remarkable Geological Discovery

The Pecuniary Prospects of the East River Bridge

Progress of Foreign Invention- February 25, 1871

Intelligent Legislation About Medical Prescriptions

How the Ice Bridge is Formed in the East River

Recent Decisions at the Patent Office- February 25, 1871

The Present and The Past- February 25, 1871

Scientific Intelligence- February 25, 1871

Answers to Correspondents- February 25, 1871

Queries- February 25, 1871

Applications for Extension of Patents- February 25, 1871

New Patent Law of 1870

Official List of Patents- February 25, 1871

Issued by the U.S. Patent Office. FOR THE WEEK ENDING FEB. 14, 1871. Reported Officially for the Scientific American.

Recent American and Foreign Patents- February 25, 1871

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

Departments

  • Letters

    Correspondence- February 25, 1871

  • Recommended

    New Books and Publications- February 25, 1871

  • Departments

    Business and Personal- February 25, 1871

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February 25, 1871

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