Volume 106, Issue 13
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Features
How Detective Burns Listened to Dynamiter Plots
Instruments That Can be Used for Eavesdropping or for Business Purposes
Piercing the Jungfrau Tunnel
A Remarkable Engineering Feat in the Swiss Alps
The New Notions of Matter
The Last of the "Maine"
A Fitting Burial at Sea
A Princely Gift for Technical Education
What the $2,500,000 Donation to the Massachusetts Institute of Technology Means
The Laboratory
Some Suggestions for Home Experiment
An Electric Furnace
A Professional Inventor
What Inventors are Doing
Simple Patent Law; Patent Office News; Inventions New and Interesting