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 354
PHOTOGEAPHS. 329 concerned ; but there is likely to be little chance of confusion owingto the different nature of their outlines. In the photograph ofEiidersdorf, three bridges are to be seen, which of course clearlyindicate a river ; besides which there are the shadows of the trees,and, further… … Fig. 208.—Village in the Uckermark in winter. glittering in the dark trees. If the whole country is coveredwith snow, and yet shows a number of black patches, this is aclear indication of a forest, and if the trees are not too closelyplanted, they can often be distinguished from one another.Fields…
Aeronautics
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