Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 230
ral times, by holding it a few moments over a burning gas-jet. It rapidly fills with heated air and, when freed, soars up to the ceiling, where it rolls along until the air cools, then falls gently to the floor. The parachute shown in Fig. 10 is simply a square piece of paper with a string at each… … FILLING THE BALLOON WITH HEATED AIR. These parachutes are attached to a wire thathangs from the balloon, in this manner : Fromthe center and top of the parachute is a string,we will say, a foot long ; this is tied securely
Children's literature
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