Scientific American Magazine
Volume 20, Issue 19You are currently logged out. Please sign in to download the issue PDF.
Features
Improvement in Steam Hammers, Securing a Permanent Way, and more
Beet Root Sugar
Free Trade and Protection
Haskell's Portable Bookcase
Pallissard's Walking Support for Infants
A New Process for Determining the Comparative Value of White Lead
Practical Suggestions on Tanning Leather
Editorial Summary
Improved Hinge and Door Stay
Improvement in Three-Wheeled Velocipedes
Vis Inertia
Centenary of the Steam Engine—James Watt
Employers and Employed
Habits of Mechanics
The Recent Auroral Display
The Relative Merits of New Iron and of Scrap Iron as Materials for the Shafts of Ocean Steamers
New Publications
Applications for the Extension of Patents
Answers to Correspondents
Recent American and Foreign Patents
Official List of Patents
Departments
Correspondence
Business and Personal
