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Features

Improved Hot Air Furnace, Why Does Gunpowder Drive a Ball from a Cannon and more

Romance of the Steam Engine - February 23, 1861

American Engineers' Association

Humbert's Improved Watch Escapement

Column of Varieties

Another Great Mechanic Gone

What Inventors Have Done

Altering our Naval Vessels

Unproductive Consumption of Wealth

Passage of the Patent Bill

American Coal

The Proposed New Tariff

The Polytechnic Association of the American Institute

Patent Claims - February 23, 1861

Departments

  • Letters

    Our Correspondence - February 23, 1861

  • Departments

    Notes and Queries - February 23, 1861

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Know Before You Vote

Know Before You Vote