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The Telegraph

Improved Shingle Machine, Tunnel Under Chicago River, and More

A Fine Tower Clock

Our Special Correspondence

The Manufacture of Haircloth

Miscellaneous Summary

Influence of the Mechanic in Politics

The Advantage of Good Tools

Chemical Notes

Telegraphic Cable

Special Notices

New Publications

Appleby and Gould's Lamp Chimney

Disinfecting by Steam

The Force of Wind

Inventors--Their Labors and Rewards

Patent Claims

Issued from the U. S. Patent Office

Nell's Adjustable Spring Bracket for Window Shades

Rowell's Movement


  • Departments


  • New Inventions

  • Notes and Queries

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