Page:Popular Science Monthly Volume 90.djvu/535

 For All Its Bulk, a Zeppelin Has Not Much Substance

���A broken-away view of a modern Zeppelin which gives a good idea of its internal construction In the Zeppehn the gas is confined in about seventeen independent bags which are contained in a long cylindrical frame. A number of the bags may be punctured, but the balloon will still be buoyant enough to carry its navigators to safety and will retain its shape at any altitude

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