Scientific American Magazine
Volume 101, Issue 2You are currently logged out. Please sign in to download the issue PDF.
Features
The Railways of the World
The Electric Locomotive of the Future
The Directive Sense of Bees
Drydocks for our Biggest Battleships
Engineering
Science
Electricity
The Guayule Rubber Industry
The Standard Electrical Cell--Its use and Its Practical Value
A 5,000-Ton Testing Machine
The Fourth Dimension Simply Explained
The First Honorable Mention Essay in the Fourth Dimension Competition
Carving Statues by Means of Photography
The First Flight Exhibition and Tournament of the Aeronautic Society
A Huge Planetarium
Improved Head for Stringed Musical Instruments
Padlock with Incased Bolt
Patent Department - July 10, 1909
Metal Rail Base and Cross Tie for Railway Tracks
Departments
Recently Patented Inventions - July 10, 1909
Index of Inventions - July 10, 1909
Patents - July 10, 1909
New Books, Etc. - July 10, 1909
