Volume 91, Issue 7
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Features
The Penetrating Power of "N1-Rays."
The Position of the Range Finder on a Warship
A New Cunarder
Renard's New Boiler for Airships
The National Geographic Congress
The Automobile Tour to the World's Fair
The Mercury Vapor Lamp for Photographic Work
The United States Marine Corps
The Utilization of Snake Venom in Preparing Anti-Bubonic Serum
The Mount Pilatus Railway, Switzerland
Speed Trial of the Battleship "Ohio."
Strange Sights in the Far North
Medical Battery
Cabinet for Storing Phonograph Records
The Oldest Known Inhabitant of the Globe
By the St. Louis Correspondent of the Scientific American