Volume 107, Issue 9
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Features
The Junkers Oil Engine
A New Type of Motor on the Diesel Principle
Instrumental Observation of the Sun's Heat, Night Letters in Italy and more
The Paris Correspondent of the Scientific American
The Celilo Canal
Burning Up Bad Roads to Make Good Ones, Salving the Steamer "Jose"
Curious Megalithic Monuments of France
Smoke, the Destroyer
The de Lesseps "Wind Wagon", Black Lightning Flashes
The Trade-mark as a Business Asset, Trade-mark Protection.--VIII and more
Feeding the Body with Electricity
Military Aviation Abroad
The Paris Correspondent of the Scientific American