Features
The Formula and the Testing Machine
Ambitious Scheme of Electrification
Our Stupendous Railroad System
The So-Called Hypnotic Influence of Snakes
The Electrical Show at Madison Square Garden
A New System for the Fixation of Atmospheric Nitrogen
Why the Quebec Bridge Failed
The Gammeter Orthopter-A Beating-Wing Flying Machine
A Strong Home-Made Turnbuckle
War Cars, Ancient and Modern
A Universal Astronomical Clock
Blood Pressure and Mental Conditions
Gas and Coke from Crude Oil
Departments
- Departments
Correspondence
Index of Inventions
Notes and Queries
Recently Patented Inventions
Patents
