Scientific American Magazine
Volume 69, Issue 25You are currently logged out. Please sign in to download the issue PDF.
Features
The Pennsylvania Anthracite Coal Fields
Screen Photography in Colors
Prof. John Tyndall
An Improved Adding Machine
Automatic Distributor of Perfumes
A Brake for Portable Engines, Etc.
A New System of Lighting Street Gas Lamps Without the Use of Wires
A New Storage Battery
The Bundy Automatic Time Recorder at the Exposition
A Novelty for the Midwinter Fair
The Broadway Cable Railway
United States Large Caliber Mortars
A Carbonic Acid Motor
Experiment on the Tension of Liquid Films
To Inventors
Departments
New Books and Publications
Recently Patented Inventions
Business and Personal
Notes and Queries
Index of Inventions
Patents
