Volume 108, Issue 20
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Features
Training the Sightless
A Journey in a Zeppelin
Impressions of a Trip in the Airship "Viktoria Luise"
A Copper El Dorado in Mid-Africa--The Katanga
Salving the "Lutine"
The Lotschberg or Bernese Alpine Railway
Modern Engineering for the Benefit of the Tourist
Thinking Horses
A Problem in Animal Psychology, or in Stage Trickery? By the Berlin Correspondent of the SCIENTIFIC AMERICAN