Scientific American Magazine
Volume 70, Issue 21You are currently logged out. Please sign in to download the issue PDF.
Features
The One Hundred and Fifty Ton Portable Gun Scales of the Watervliet Arsenal
The Bicycle as an Example for Improvements in Transportation
Eleventh Annual Meeting of the Institute of Electrical Engineers
An Automatically Operating Ejector
A Simple and Easily Cleaned Filter
A Convenient Line Chalker
An Improved Ore Crusher
Electrostatic Induction Machines without Sectors
Picolet's Wimshurst Induction Machine without Sectors
New Lift Bridge, Chicago
A Simple and Convenient Telephone
Marine Steam Dynamo
Protection of Piles Against the Teredo
Simplified Apparatus for Photomicrography
To Inventors - May 26, 1894
Departments
Correspondence - May 26, 1894
New Books and Publications - May 26, 1894
Recently Patented Inventions - May 26, 1894
Notes and Queries - May 26, 1894
Business and Personal - May 26, 1894
Index of Inventions - May 26, 1894
