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 301
so done the same. Theballoon is specially useful when it is a matter of observing somerare phenomenon which may be hidden by a cloudy sky. Thefirst ascents of this kind were made by Spencer-Rush in 1843,and Welsh also did work under similar conditions for the KewObservatory. On November 16th, 1867,… … Fig. 179.—The shadow of the balloon is seen on the clouds,together with a halo. 1870, in order to go to Africa for the observation of a solareclipse, and this perhaps is some explanation of the interestwhich he has since taken in ballooning. Wilfrid de Fonvielleand Madame Klumpke made further…
Aeronautics
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