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Features

Improved Stone-Lifting Machine, The Expansive Force of Gunpowder, and More

The New Planet

The Monitor Turrets

Recent American Patents

Miscellaneous Summary

Foreign Intelligence

Gas Engines in France

The Theory of Boiler Explosions from Superheated Steam

Patent Claims and Patent Business

Improved School Globes

War and the Progress of Invention

Patent Claims

Issued From The United States Patent-Office

To Our Readers

Rates of Advertising

Improved Harrow and Clod-Crusher, Improved Wrench

Departments

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    Correspondence

  • Notes and Queries

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