The Channel Tunnel and its Early History—I
Plans for Direct Railway Connection Between England and France
Features
Gatun Hydroelectric Development for the Panama Canal
How the Surplus Water of Gatun Lake will Furnish Light and Power for the Panama Canal and Railway
The “Aquitania” and the “Vaterland”
Fluid Motions
Some Problems Awaiting Solution
The Internal Combustion Motor in the Field of Aviation
Aviation Has Evolved Three General Types of Gasoline Motor
Some Conditions Inducing Excessive Respiration
The Schilowsky Gyroscope
Its Adaptation for Stabilizing Ships and Aeroplanes
The Mechanical Efficiency of Muscle
Napier and the Invention of Logarithms
The Tercentenary of One of the Greatest Labor-saving Devices Known
Some Further Experiments with Liquid Drops and Globules
Life-like Properties of Inert Matter
