The Invasion of the Trenches by Rats—I
Its Causes and Its Remedies
Features
Chloropicrin
Gazebos
A Curious Feature of Ancient Architecture
Standardization of Freight Cars and Locomotives
Chemically Treated Fabrics for Powder Bags
Metals used in Aeroplane Construction
Their Composition and General Characteristics
A Simple Plan for Unifying Time in the United States
The use of Creosoted Fir for Marine Construction
How Things Break—II
A Study of the Mechanism of Fractures in Materials
New Method of Treating Positive Electrodes of Primary Batteries
The Annealing of Glass
Germans Learned Poison Gas Warfare from Savages
Paving Bricks from Blast-Furnace Slag
The Evolution and Destruction of Life
Effect of Modern Agencies on Wild Birds and Animals
Quenching Large Forgings
Light Scattered by Dust-Free Air
Scent-Producing Organs of Insects
Oxyliquite
A Liquid Oxygen Explosive
The Doppler Principle
A Test in Acclimatization
High-Speed Internal-Combustion Engines
Features of Design and Principles of Operation
