Volume 121, Issue 23
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Features
Hysteria among the Admirals, The History of a Great Invention and more
Electric vs. Steam--A Tug of War
An Interesting Test of the Giant Electric Locomotive Built for a Western Railroad
Houses by the Bucketful
Latest Developments in the Construction of Identical Dwellings of Concrete in a Single Piece
The Secret Telephone, Are Sound Waves Ever Visible?
Dismantling the Fortifications of Heligoland
How the Germans are Carrying out the Terms of the Peace Treaty
Wealth from Waste
Wind Tunnels and Airplane Designs
How Aeronautical Engineers Check Up Their Designs in Model Form
The British Battle-Cruiser "Renown"
Some Particulars of the Fastest Big-Gun Ship Afloat