Volume 123, Issue 6
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Features
In the Wake of the Woodsman
The Great American Formula for Converting Forests Into Deserts
Guiding Ships by Electric Cables
The Last Word in Searchlights
Who Invented it First?
Some of the Knotty Points That Come Before the Examiners in Interference
The Metric System
Why We Should Measure in Meters, Grams and Liters, without Reservations
Our Deep-Sea Freighters
Something of Permanent Advantage that We Got from Our Participation in the War
The America's Cup Races
Notes on the Contests for 1920
The Romance of Tungsten
How This Erstwhile Brittle Metal Was Made Available for Lamps