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Improved Machine for Drilling Rocks, Improvement in Car Trucks, and more

Something About Bells

On the Coal-Fields of the North Pacific Coast

Wood Engraving—Improvements in the Art

A New Telegraphic Insulator

Improvement in Horse Collars

Spiders' Silk

Improvement in Coal Scuttles

The Proposed Postal Telegraph

On Circulation in Boilers

Little Known Fibrous Plants

The Art of Pyrotechny

Manufacture of Iron and Lead Pipes

The Forthcoming Eclipse

Editorial Summary

Answers to Correspondents

Recent American and Foreign Patents

Decision by the Commissioner of Patents

Official List of Patents

Applications for Extension of Patents

New Publications


  • Departments


  • Business and Personal

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