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 274
rganisingthe basis of co-operation by the employment of accurate instru-ments, which are constructed on similar principles. The out-lines of such arrangements as are possible to secure the use ofsimilar instruments were discussed at our first conference atStrassburg. Since that time, such balloons… … Fig. 156.—Captain Gross. 254 AIRSHIPS PAST AND PRESENT. of Teisserenc de Bort. The recording balloon has become amost useful auxiliary, and has brought us most surprising-results out of the icy regions at a height of twelve miles aboveour heads. Berson and Siiring rose to heights of six miles,…
Aeronautics
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