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 380
ible, and the same is trueof the female bird. The weight of the messages carried by the CARRIER PIGEONS FOR BALLOONS. 355 bird is not without its effect on its strength, and the mode ofattaching them to the body is a matter to be studied. The usualplan is to write the message on thin paper, and… … Fig. 222.—In this photograph the shadow of the balloon is seen on the oldfortifications. (Taken by Count de la Vaulx.) seen at the various shows. Photographs can also be transmittedby their means, and this is useful in time of war for the purposeof sending plans, etc., from a beleaguered town.…
Aeronautics
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