Their machines to begin with were merely gliders, the operator lying upon them in a horizontal position, but in 1903 a petrol motor was added, and a flight lasting 59 seconds was performed. [Please select]
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"It would seem not," replied the naturalist, "their wings only serve as gliders." [Please select]
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"But they can't fly upward," exclaimed Lathrop, pointing eagerly to where some of the gliders, having swum the river, were nimbly clambering up a grass rope-ladder to their homes. [Please select]
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