Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 412
loonhaving a capacity of, say, forty thousand cubicfeet, but carrying at the ground only ten thou-sand cubic feet of hydrogen—in other words,in a shrunken, about quarter-filled balloon. Ofcourse as we rose and the air became rarefiedthis hydrogen would expand against the de-creasing air pressure,… … 399 400 CAREERS OF DANGER AND DARING.
Children's literature
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