Volume 125, Issue 7
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Features
Railroading Under Roof
Where the Severity of the Weather Practically Makes Transportation an Indoor Game
Saving St. Paul's in London
Clean Water for the Power Plant
Getting the Rest of the Oil
Laboratory Tests that Reveal the Underground Secrets of the Petroleum Field
Starving in the Midst of Plenty
Present Knowledge Regarding the Cause and Cure of Pellagra
Proposed Hudson River Pontoon Bridge
An Emergency Measure to Meet Severe Automobile Congestion
The Captive Helicopter
Details of the Remarkable Machine Developed by an Austrian Army Officer
Enemies of Timber Construction
Some of the Insects that Prey on Piles and Beams, and the Extent of their Depredations
An Ancient Art in Modern Dress
How the Potter Does, by Machine, the Same Things His Ancestors Did by Hand