Bacon, Gertrude, 1874-1949 · New York, Dodd, Mead & company; [etc., etc.] · leaf 71
ed balloonsduring the Civil War a year later. TheAmerican war balloons were comparativelysmall ones, inflated with hydrogen. Thehydrogen was manufactured in the way al-ready described, by pouring dilute sulphuricacid upon scrap-iron. For making the gas 72 BALLOONS AND FLYING MACHINES upon the field… … ^:^>^r>* American War Balloon. through vessels filled with lime-water to cooland purify it. When on the march fourwaggons were sufficient to carry the wholeapparatus. The inflation, which took sometime, was made as close to the scene ofaction as was considered safe, and whenthe balloon was…
Aeronautics
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