Abstract
IN a Note in NATURE of December 16 (p. 157) you observe that the barometric reading of 27.333 inches (reduced to sea-level) recorded at Ochtertyre, Perthshire, on January 26, 1884, is the lowest observed by man anywhere on the land surface of the globe. This, however, is not the case. The cyclone which on the morning of September 22, 1885, swept over False Point, on the coast of Orissa, gave the lower readings 27.135 at the beginning of the central calm, and 27.154 half an hour later (both readings reduced to 32° and sea-level). These readings are perfectly authentic, the instrument being a Casella's observatory standard (on Fortin's principle) that has been verified with the Calcutta standard and is corrected to that standard, which is 0.011″ higher than the Kew standard. Its elevation above the sea, 20.6 feet, has been determined by spirit-level; and the observer, Mr. Workman, is one of the best of those who keep a regular meteorological register for this department. The above are the lowest of a series of readings, taken at intervals throughout the storm, which was then travelling at the rate of thirteen miles an hour.
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BLANFORD, H. Low Barometric Readings. Nature 35, 344 (1887). https://doi.org/10.1038/035344c0
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DOI: https://doi.org/10.1038/035344c0
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