Abstract
IT was chiefly due to the War that surveying from air photographs emerged from the state of being an ingenious but not very serious or practical method, into the condition of being in certain cases indispensable and in many cases of genuine value, and, it may be added, in all cases to be reckoned with. The history of the method ante-dates the invention of aeroplanes. It had been used with comparative success from balloons; and, in the British service, it was the late Col. Elsdale who developed the use of small free balloons, which travelled a sufficient distance to allow a series of plates to be exposed, and then upset themselves and came down to the ground. Photographs of this kind were taken so long ago as 1885.
Surveying from Air Photographs.
By Cap. M. Hotine. Pp. xi + 250 + 8 plates. (London: Constable and Co., Ltd., 1931.) 30s. net
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C., C. The New Surveying. Nature 128, 946–947 (1931). https://doi.org/10.1038/128946a0
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DOI: https://doi.org/10.1038/128946a0
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