Volume 106, Issue 4
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Features
Recent Developments in French Dirigibles
"The Construction of the Lieutenant Selle de Beauchamp"
A Difficult Engineering Feat Carried Out in Paris
Piercing the Montmartre Hill for a Subway
Rules Governing the Competition for the $15,000 Flying Machine Prize Offered
The First Trans-continental Rail way in South America, from the Atlantic to the Pacific
The Transandine Railway and Tunnel
The Third Award of the Scientific American Medal for the Conservation of Human Life and Limb
Curiosities of Science and Invention
The Laboratory, An Easily Made Vacuum Apparatus
Some Suggestions for Home Experiment