Volume 122, Issue 22
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Features
The Overhead Cable Crossing
Largest Electric Transmission Span in the World, at Three Rivers, Quebec
Determining the Heating and Cooling Curves of Metals
The Dendrograph--An Instrument that Keeps Tabs on Tree Growth, A Fire-Fighting Equipment on Rails
The Architecture of the Molecule
Some of the Things Which the Langmuir Postulates Tell Us About the Chemical Compounds
Ancient Remains in Colorado
The Mesa Verde National Park, Landmark of a Lost Race
A Racing Car with Two Engines
An Old Departure in Theater Building
Solving the Short-Haul Problem
The Role of the Light, Narrow-Gage Railway in the Local Transportation of the Future