An Extinct Giant-Shark
The Race Probably Died Out through its Own Rapacity
The Race Probably Died Out through its Own Rapacity
Dynamo Driven from the Coach Axle
Gasoline Engines Desiǵned to Meet the Severest Conditions of Service
Can the White Races Become Permanent Populations in the Tropics ?
The Newest Departure in German Educational Work
Computation of the Principal Features
A Movement for Centralization
Some Records of “Artificial Earthquakes”
An Analysis of the Cause of Gravitation and Comparison with the Gravitational Constant on the Basis of Corpuscular Rotation