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 282
er withtheir wives and families they constitute a little colony of 50persons. On October 1st, 1906, Assmann had accomplished thefeat of making ascents on 1,379 consecutive days ; but with themeans at his disposal it is impossible to make ascents both by SCIENTIFIC BALLOONING. 261 day and by night… … Fig. 1G3.—Curves taken by recording instruments. In the lower half the curves are marked by a pointer on a piece of paper that has been coated withsoot. These curves are shown clearly in the upper half of the illustration. It is intended to use a motor-boat for the purpose of starting theflight.…
Aeronautics
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