Abstract
IN No. 10, vol. ix., of the Boll. Soc. Sismol. Italiana, Dr. Agamennone records the fact that his idea of taking photographs, at intervals, from fixed points, in regions suspected of bradiseismic movements, was independently suggested by F. Salmojraghi. The object is to detect slow or rapid changes of relative level in the interior of a continent, where there is no such convenient datum level as is afforded by the sea, and the paper is specially devoted to showing that the effects of refraction, being irregular, would not prevent the detection of a bradiseismic change of relative level in a regular series of photographic records.
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Seismological Notes . Nature 71, 19–21 (1904). https://doi.org/10.1038/071019a0
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DOI: https://doi.org/10.1038/071019a0