Abstract
EDINBURGH. Royal Society, July 5.—The Hon. Lord McLaren in the chair.—Mr. Thomas Heath read a note on the Calcutta earthquake (June 12, 1897), as recorded by the bifilar pendulum at the Edinburgh Royal Observatory. His results have been already communicated to NATURE (June 24, p. 174). He described the instrument as set up on Blackford Hill, and exhibited a model. Vibrations of a transient character due to shocks in or near the building were damped out by immersing the pendulum in the clearest paraffin oil. According to a rough calculation the seismic disturbance on the 12th took twenty-two minutes to travel 4970 miles in a great circle.
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Societies and Academies. Nature 56, 287–288 (1897). https://doi.org/10.1038/056287a0
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DOI: https://doi.org/10.1038/056287a0