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Arrangement for Cross-cut Saws

Special Notice

A Novel Pill-Counting Machine

Power Required to Start a Train

Another Silk-Worm from Asia

The Way Matches Are Made

Manipulation of Metals

Can the Country Afford the War?

A Common Fault

English and American Railroads

Further Particulars Concerning the Rebel Ram Tennessee.

The World at War

Turpentine and Naphtha in Paint

Gunnery Catechism

The Patent Claims


  • Departments


  • Patents

  • Notes and Queries

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