Saving Daylight
Economic Reasons That Make a Change in Our Hours of Work Desirable
Features
Sawing Cast Iron
Aerography
The Science of the Structure of the Atmosphere
Galalith for Insulating Wounded Nerves
Migratory Consumptives
Medieval Universities
The Revival of Learning in Europe, and Curious Regulations of Discipline
Brier Roots for Pipe Making
Misuse of Drainage Systems as Sanitary Sewers
The “Duilio”
How Italy Promotes her South American Trade
Concrete Floors in the Home
The Turquois
Antimony and the War
Principle Sources of the Metal, and Notes on its Reduction
Stone for Road Material
American Flags
Interesting Relics in the National Museum
The Principles of Crop Production
A Review of Early Theories, and Results of Extended Investigations
Color-Vision—I
And Color-Vision Theories, Including the Theory of Vision
