What to do and how to do it; the American boys handy book (1920)
Beard, Daniel Carter, 1850-1941 · New York, C. Scribner's sons · leaf 171
ssfully, you can try other shapes. A very good plan in experimenting is to make a small working model of light tissue-paper, fill itwith cold air by means of anordinary fan, and when it isexpanded any defect in formor proportion can be readilydetected and remedied. Ifit be too narrow, cut it openat… … Fig. lOi.^^Method of pasting Paper andStrings for Parachute. table. He has sent it up in the house several times by holding ita few moments over a burning gas-jet. The balloon rapidly fillswith heated air, and when freed soars up to the ceiling, whereit rolls along until the air cools, then falls…
Amusements · Sports
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