Volume 79, Issue 2055supp
You are currently logged out. Please sign in to download the issue PDF.
Features
Ozone Sterilizing Plant
Various forms of the Periscope
Principles and Development of a Valuable Instrument used in War
The Romance of Motion Pictures
A Scientific Toy that has Grown to be a Great Commercial Factor
The Measurement of Distances in War
Ingenious Modern Methods and Instruments Now Used
Harvest Forecasts for 1915
Fuel Oil
Atoms and Ions—IV
A Comprehensive Discussion Especially as Related to Gases
Measurements of Radium
How much Albumen is needed in our Diet?
Interesting Results of Some Extended Experiments
European Aeronautical Laboratories—I
Their Organization, Equipment and Methods of Investigation
A Vibration Electrometer
Removing Tar from Gas
The Coolidge Tube in Metallurgical Research
The Telephotographic Apparatus of Georges Rignoux
Experiments in Sending Visible Forms Electricity
Wire-Winding Big Guns for Uncle Sam
Methods by Which the Most Powerful Guns in the World are Made
Cultivation of Living Tissues outside the Body
Rifling Canon
Keeping Steam Turbine Blades Clean
Pathology of Mental Diseases—II
Modern Aspects of Certain Problems