Airships past and present, together with chapters on the use of balloons in connection with meteorology, photography and the carrier pigeon (1908)
Hildebrandt, Alfred, 1870-, Story, W. H. · London, A. Constable & Co. ltd. · leaf 178
rtain number of men,principally from the educated classes, are instructed practicallyand theoretically in the art. They receive the title of Aero-naute brevete after passing an examination, and are instructedto place themselves at the disposal of the authorities of a givenfortress in the event of… … country in case of need, and they receive lessons in the art of construction for this purpose. The French army therefore dis- poses of the services of a large number of experienced men, who could, in case of need, do much useful work in the fortresses and elsewhere. It has both a civil arid…
Aeronautics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
