Halle, Rengerschen Buchhandlung, 1805. Without wrappers. In ""Annalen der Physik. Herausgegeben von Ludwig Wilhelm Gilbert"", Bd. 20, Fünftes Stück. (The entire issue offered). Titlepage to vol. 20. Pp. 1-128. Biot's paper: pp. 1-18. - Gay-Lussac: pp. 19-37 - Humboldt & Gay-Lussac: pp. 38-92. - Sacharow: pp. 107-124.
Reference : 44123
These 4 accounts of the earliest scientific ascents with balloons, had the same purposes, namely to make observations on the composition of the air, pressure and the earth's magnetic force. Brockett ""Bibliography of Aeronautics"" Nos 1856 a, 6303 a a. 10654 a.
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