Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 304
he ground.With a consumption of 250 cubic feet of gas perhour, it travelled at a speed of ten miles an hour.The lack of funds seems to have prevented furtherexperiments with an inventionwhich was at least very prom-ising. In the same year a dirigi-ble balloon built by Dupuy deLome for use by the… … Sketch of the De Lome airship. 804 BALLOONS: THE DIRIGIBLE. ord as Giffards steam-driven airship—six miles anhour. In 1881^ the brothers Albert and Gaston Tissan-dier exhibited at the Electrical Exhibition in Paris
Aeronautics
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