Volume 120, Issue 10
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Features
The Proposed Vehicular Tunnel Under the Hudson River
A Study in Ventilation
The Work of the French Seaplanes
Disclosure of Excellent Performance of the Naval Service During the War
The Monitors of the Present War
A Type of the Fighting Ship That Was Proof Against Torpedo Attack
Reconstruction in Europe--IV
From Fighting Line to Factory
The Hydrophone for Locating Submarines
An Ingenious French Invention That Did Much to Make the Seas Safe for the Allies
Mechanical Equipment of the Farm
Latest Developments in Agricultural Machinery and Practical Suggestions for the Farmer