Volume 61, Issue 1573supp
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Features
Interborough Rapid Transit Company Test of Subway Engines
The use of Alcohol as Fuel for Internal-Combustion Motors
A Cheap and Simple Compensation Pendulum
Benjamin Franklin and Electricity
Efficiencies
Single-Phase Alternating-Current Railway Work
The Physics of Ore Flotation
A Hand Camera Capable of Conversion into an Enlarging and Projecting Apparatus
How Brilliant Metallic Surfaces are Formed on Pottery
The Fixation of Atmospheric Nitrogen
A Miniature Caloric Engine
A New Standard of Light
The Changes in the Nerve and Muscle which Seem to Underlie the Electrotonic Effects of the Galvanic Current
Methods of Transportation among Insects
A Novel Method of Determining the Elements of the Earth's Orbit
Our Berlin Correspondent
Principles of Success in Concrete Block Manufacture
Use of Diamonds in the Industries
Diamond Tools