Features
As Others See Us
Naval Annuals of 1909
Science
Electricity
Engineering
Baseball at Night
The First Attempt at a Cross-Channel Flight and New French Cross-Country Records
Construction of an Ellipse
How the Peace Could be Kept Internationally
Speed of the Mauretania
A New Process for Damascening, Inlaying, and Blending Metals
BY THE ENGLISH CORRESPONDENT OF THE SCIENTIFIC AMERICAN.
The First of the 1909 Flights for the Scientific American Trophy
Handy Man's Workshop
Experiments with Alternating Current, Using a Small Direct-Current Motor
A Ladder Extension Leg
Device for Removing Broken Wood Screws
Automatic Lubricating Cup
Departments
- Departments
Correspondence - July 31, 1909
The Heavens in August
Patents - July 31, 1909
Recently Patented Inventions - July 31, 1909
Index of Inventions - July 31, 1909
