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Improved Anchor Tripper, Interesting Objects in the Exhibition

Notes on Military and Naval Affairs

The Handsomest Fire Engine Ever Built

Petroleum -- Experiment to Determine its Comparative Illuminating Power with Gas and Candles

Polytechnic Association of the American Institute

Valuable Receipts

Recent Foreign Inventions - July 26, 1862

Coating the Hulls of Iron Ships

The True Remedy for the Scarcity of Change

Iron-Clad Frigates--Bending Their Armor Plates

Experiments with Working Steam Expansively and with Condensers

The London Exhibition

Interesting Reminiscences

Patent Claims - July 26, 1862

Issued,From The United States Patent Office

Recent American Inventions - July 26, 1862

To Our Readers - July 26, 1862


  • Letters

    Correspondence - July 26, 1862

  • Departments

    Notes and Queries - July 26, 1862

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