The Armored Ships of the United States Navy
Heavy Armor and Powerful Batteries Characterize American Battleships
Features
Our Radium Resources
Natural Resources which should be Preserved for National use
The Consumption of Paper
Ultra-Violet Action
How a Basement Story was added to a Mill
The 1913-14 Borel Monoplane; Military Type
The Pyrophoric Alloy Industry
The Modern Substitute for “Flint and Steel”
Heavy Oil as Fuel for Internal Combustion Engines
Encouraging Results Obtained with Diesel Motors
Plants Cultivated at the Neolithic Epoch
Intense Cold can be Easily Obtained
Some Phases of the Illumination of Interiors
A Demonstration of Lighting Effects
Our Fighting Strength
Armored Ships of the United States Navy
Flavor of Butter Injured by Metals
What are the Ten Greatest Inventions of the Age, and Why?
Scientific American Prize Contest: Essay which Received Honorable Mention