Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon (1908)
Hildebrandt, A. (Alfred), b. 1870, Story, W. H. tr · New York, D. Van Nostrand company · leaf 24
res, or by throwing overboard some portion of the ballast.His ideas on the theory of the problem were undoubtedly correct,and he carried on a vigorous controversy with those who advancedobjections to his proposals. But he came finally to the piousconclusion that he could scarcely hope for the… … Fig. 2.—Fauste Veranzio in his parachute. AIRSHIPS PAST AND PRESENT. bird in his book De Motu Animalium, and tried to show thatit was impossible for a man to fly by his own unaided efforts.A man was, indeed, much too heavy, at any rate in comparisonwith birds, neither had he sufficient muscular…
Aeronautics
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