Coal: Its Composition and Combustion
General Discussion of the Elements that Promote Combustion
Features
Iron, Gold, Silver, and Tin Amalgams
Formulas for Making and using them
Foreign Aeronautic Motors.—II
Description of Some of the Lightest of those of the Circular or Revolving-Cylinder Type
Aeronautical Terminology
Practical Thermodynamics
Steam Engine Efficiency in the Light of Modern Mechanics
Industrial Accidents
The Prevention of Mining Accidents
What the Government is Doing to Save Life in Mines
The Cavern of Proumeyssac
The Rediscovery of an Ancient Natural Wonder
Amount of Free Water in the Earth's Crust
Recent Earthquakes
Tremblings that Preceded the Italian Shock
Old Age and Death
Scientific Devices to Ward Off Decay
Chinese Incense Sticks
Proportions of Transmission Systems
Artificial Unwoven Cloth
Some New Processes of Manufacture
Surgical Instruments of Antiquity
What the Anclents Knew About Surgery
The Sewage Problem Popularly Stated
The Battle of the Microbes
