Features
The Bubonic Plague—I
Its Menace to the United States of America
The Airship as an Adjunct in Geophysical Studies
Landscape Features Disclosed in Bird's Eye View
The Eighth International Congress of Applied Chemistry—II
A Survey of Some of the Principal Papers Presented
Celestial Motions Considered on the Principle of Relativity
Velocities of Heavenly Bodies Gaged on a Comparative Scale
Electrolysis from Stray Currents—II
Damage Caused to Underground Structures
The Technical Problems of Coal Preparation
Waste by Attrition Must be Kept Down to a Minimum
A New Alloy with Acid-Resisting Properties
An Experimental Study of Vortex Motion in Liquids—I
Lord Kelvins's Smoke-ring Model of the Atom
Testing Lubricants
A Machine for Studying Them Under Actual Working Conditions
