Commercial and Financial Aspects of Gas Manufacture—II
A Retrospect of the Development of a Great Industry
Volume 75, Issue 1948supp
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Features
Automatic Railway Signaling
Arctic Exploration and the New Stefánsson Expedition
Plans of the Stefánsson Expedition
The Hardness of Metals
Theoretical Basis of Metal Working
The Control of the Mississippi Floods
Reservoirs, Reforestation and Levees Each Have Their Uses
Electric Lamps for Miners
Recent Improvements Received from England
The Mechanism of Animal Behavior
A New Paper Mill Engine
Wide Speed Range Secured by Special Designs
A Flying Frog
The Structure of the Atom—V
The Physical and Chemical Properties of the A tom Explained in the Light of Modern Theory and Experiment