Features
The Scientific American Gold Medal for Safety Devices
Theory and Practice
Three Months of Denatured Alcohol
The Current Supplement
The Evaporation of Solid Metals and their Compounds
A Great Ice Jam on the Susquehanna River
A Time-Controlled Phonograph
A Combined Sleeper and Chair Car
The Construction of a Magnetic Detector
A Continuous Variable-Speed System of Rapid Transit
How Church Bells are Cast
The Gyroscope as a Compass
A Babylonian Vase Inlaid with Ivory and Precious Stones Dating from 4500 B. C
A Lecture Room on a Railroad Train
An Unsinkable Motor Lifeboat
A Wire Rope Railway Used in the Construction of an Italian Fortress
Departments
- Departments
Recently Patented Inventions
Notes and Queries
Index of Inventions
Patents
