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Improved Steam Valve

New Cornish Engine

Chlorated Silver

Improved Lathe Chuck

List of Patent Claims

Magnetic Meridian

The Cornish Steam Engine

Colored Poisonous Confectionaries

The Perpetual Motion

Expensive Books

Gone West

New Rock Drill

Nitrate of Silver for Burns

Submarine Telegraph Between America and Norway

Writing Inks

Coal in Turkey

The Metals

Recent American Patents

Iron Steamships

Silver and its Uses.--No 1

To Steamboat Inspectors

Monument to James Watt

Recent Foreign Inventions

Notes on Ancient and Curious Inventions.--No. 2

Enameling Iron

Improvement in Pianofortes

A Cold March

Government Ships and Fire Arms




  • Letters

    Our Foreign Correspondence

  • To Correspondents

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