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 298
s and note themin the book, and we could also throw out the ballast; but as for SCIENTIFIC BALLOONING. 277 looking about us and determining the direction of our course,that was quite beyond us. After drifting along to the south-west,we thought that we came into a calm region, and that soon abreeze… … Fig. 177.—The balloon, Prussia, getting ready for an ascent. The last observation was made at 3.18 p.m. at a height of33,500 ft., when the barometer read 827 in., and the thermo-meter stood at —40° F. These figures were clearly writtendown in our notebook. We soon fell at intervals into a state…
Aeronautics
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