Volume 120, Issue 26
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Features
Lunch in America--Breakfast in Europe, We Should Hasten Battle-Cruisers Construction and more
Thirty Million Years Ago
Newly Discovered Pre-Cambrian Sea Wherein Earth's First Creatures Were Born
How the House Fly Takes Hold
British Textile Industries as Affected by the War
The Measures Adopted by His Majesty's Government to Keep Up Supply and Holds Prices Within Bounds
Why does a Crankcase Breathe?
How Alternate Pressure and Rarifaction are Produced by Apparently Balanced Piston Movements
War-Time Construction in the French Naval Arsenals
The French Yards and Arsenals Concentrated on Army Ordnance and on Anti-Submarine and Special War Vessels
Lake Michigan's Encroachment on its Coast
How the Currents are Stealing Land from the Western and the Giving it Back at the Southern Extremity
Amateurs in Name Only
A Story of What the War has Done for the Cause of Amateur Wireless