Dodge, Mary Mapes, 1830-1905 · [New York : Scribner & Co.] · leaf 460
uently the prudent air-ship maker must in all cases provide, first,enough power to carry his ship aloft and driveit where he chooses, in anything short of ahurricane; second, a method of balancing se-curely while aloft; third, a method of comingdown in safety. After trying different means of… … ONE OF MAXIM S STEAM-ENGINES. all things considered, they promise to solve theproblem earliest. And this decision was no piece of guess-work.Careful experiments were made, especially bytwo Americans,— Professor Langley and Mr. were best worth trying. Their experiments weremade separately. There was…
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