Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 328
s per hour.The illustration gives a very good idea of the pecu-liar ballonnets attached to the rear end of the gasenvelope. These ballonnets open into the large gas-bag, and are practically a part of it. In Italy a remarkable dirigible has been built byCaptain Ricaldoni, for military purposes. It… … V
Aeronautics
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