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Putting Radio Programs On the Air and Taking Them Out of the Air
Tests by Dr. Carl Bruck, M.D., Berlin, on the Transmission of Drawings
The Attempt to Isolate its Energy, and to Find How it May be Released for Human Use
Bessemer Converter, Where Air Performs the Major Process in Steel Making
How Connecticut Gathers the Data of Her Automobile Accidents, and the Use She Makes Thereof
The Report of a Test on Localization of Abscessed Teeth Through Handwriting
A Conflict Between Theory and Practice, and How It Is Explained Away
How Magnetic Analysis Indicates the Presence of Flaws in Rails and Beams and Hoisting Cables
A Self-Service, Motorized Store that Effects Great Economies for Dealer and Customer
The Urgent Need for Additional Unarmored Craft to Round Out the U. S. Navy
Hawaii Finds It Necessary to Control Her Water Supply
From Old Rope and Oil Waste to Leak-Proof Conductors of Current
Tests that Show How Better Lighting Makes Us See Faster as Well as Better
Fact and Fancy Regarding the Deadly Hatreds of Wild Species
From the Star Maps of an Egyptian Tomb to Chinese Statuettes
Some Details About One of Europe's Lesser Known Crops and Its Harvesting