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Features

Tanning Apparatus

Hardening and Tempering Tools and Metals

Wringing Machine--Washing Machines for the Army

The Geological History of North America

By Stevens

Notes on Military and Naval Affairs

Notes on Shipbuilding and the Construction of Machinery in New York and Vicinity

A Few Words to Our Subscribers on the Closing Volume

War With England

The Old Year's Progress

The Chemistry of Iron

Adjustable Pipe Wrench

War and Science

Spherical Shot vs. Elongated Projectiles

Patent Claims

Recent American Inventions

New York Markets

To Our Readers

Departments

  • From the Editor

    To Our Friends

  • Notes and Queries

  • Letters

    Correspondence - December 28, 1861

  • Departments

    Index

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