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Features

New Mode of Making Illuminating Gas from Light Hydrocarbon Oils

American Institute of Architects—Fireproof Construction

The Great Clock of Beauvais Cathedral and the Strasbourg Clock

On Rivets and Riveting

On the Temperature of Coal Mines

The Great Solar Eclipse

The Theory of Boiling—Tomlinson's Experiments and Conclusions

Mechanical Fairs and Exhibitions

Artificial Blushes—How They are Produced

Portland Cement

Business Mistakes of Inventors

Effect of Form Upon Friction

The Microscope in Silkworm Cultivation

The Properties of Resinous Timber

Coal—How it May and Must be Cheapened

Invention

Editorial Summary

Recent American and Foreign Patents

Manufacturing, Mining, and Railroad Items

Answers to Correspondents

Applications for Extension of Patents

Official List of Patents

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