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The Telegraph

Improved Shingle Machine, Tunnel Under Chicago River, and More

A Fine Tower Clock

Our Special Correspondence

Miscellaneous Summary

The Manufacture of Haircloth

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

Inventors--Their Labors and Rewards

The Force of Wind

Patent Claims

Issued from the U. S. Patent Office

Nell's Adjustable Spring Bracket for Window Shades

Rowell's Movement

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August 04, 1866

Confronting Common Wisdom