Bacon, Gertrude, 1874-1949 · New York, Dodd, Mead & company; [etc., etc.] · leaf 29
itwas the uncomfortable duty of an unfortunateattendant to stand actually inside, roastedwith the heat and choked with the smoke,armed with a paddle with which to beat outthe flames whenever the bag caught alight. 30 BALLOONS AND FLYING MACHINES This danger of fire was done away within the method… … Filling a Hot Air Balloon. effect of mixing these substances together isto set up a brisk chemical action, in the courseof which hydrogen gas is given off. In thiscase the hydrogen thus liberated came throughthe pipes and filled the balloon. The great dis-advantages of this method of…
Aeronautics
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