Scientific American Magazine
Volume 21, Issue 5You are currently logged out. Please sign in to download the issue PDF.
Features
Improved Machine for Drilling Rocks, Improvement in Car Trucks, and more
On the Coal-Fields of the North Pacific Coast
Something About Bells
Wood Engraving—Improvements in the Art
A New Telegraphic Insulator
Improvement in Horse Collars
Spiders' Silk
Improvement in Coal Scuttles
The Proposed Postal Telegraph
Little Known Fibrous Plants
On Circulation in Boilers
The Forthcoming Eclipse
Manufacture of Iron and Lead Pipes
The Art of Pyrotechny
Editorial Summary
Answers to Correspondents
Decision by the Commissioner of Patents
Recent American and Foreign Patents
Applications for Extension of Patents
Official List of Patents
New Publications
Departments
Correspondence
Business and Personal
