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Features

Improved Tunneling Drill

Electricity at the American Institute Exhibition

Trial of Fire Arms

Mammoth Cave and How it was Made

The Humboldt Monument

An Explosion on the Sun

Williams' Improved Axle Box for Railway Cars

Bebout's Rafter Hook

Evaporative Power of Boilers

The Open Polar Sea

How to Prevent and How to Extinguish Fires

Fireproof Buildings for Preserving Public Records

The Proposed Exhibition of Vienna, in 1873

Scientific Intelligence- November 18, 1871

Answers to Correspondents- November 18, 1871

Recent Patent Decisions- November 18, 1871

Applications for Extension of Patents- November 18, 1871

Queries- November 18, 1871

Official List of Patents- November 18, 1871

Recent American and Foreign Patents- November 18, 1871

Departments

  • The Sale of Patented Articles

  • Letters

    Correspondence- November 18, 1871

  • Departments

    Business and Personal- November 18, 1871

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November 18, 1871

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