Volume 109, Issue 21
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Features
A Radical Improvement in Cabling
Eliminating the Siphon Recorder
To Strike the Pentagram, Is the Whale Disappearing? and more
Expert Report on the Last Zeppelin Disaster, A Good Furniture Polish
Electric Signal Method of Firing Navy Boilers
Automatic Indicator Tells When to Stoke the Furnaces and Amount of the Charge
The Continuous Rail in the United States
A Machine that Crimps a Head Section on a Rail