Volume 124, Issue 10
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Features
Who Shall Work the Farms?--I
The Record of Last Year and the Prospects for 1921
Salvaging Torpedo Boats for Peaceful Uses
Copper in Steel and the Corrosion of Cars
From the Einstein Contest--III
An Introductory Statement of the Place Occupied by Relativity as a Phase of Human Thought
Making Weather to Order
The Indoor Meteorology That Makes All the Difference Between Industrial Success and Failure
Air Plus Oil Equals More Oil
How Compressed Air Takes the Place of Natural Gas in Stimulating the Flow of Old Wells