Features
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
- Departments
Correspondence
Business and Personal
