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Published online by Cambridge University Press: 01 May 2009
During the last fifteen years slight earthquakes have occurred in Cornwall on eight occasions, the dates being Oct. 7, 1889; Mar. 26, 1891; May 16 and 17, 1892; Jan. 26, 1896; and Mar. 29, April 1 and 2, 1898. The Pembroke earthquakes of Aug. 18, 1892 (0.24 and 1.40 a.m.), and Nov. 2, 1893, and the Hereford earthquake of Dec. 17, 1896, were also felt in the county. Local earth-shakes, probably connected with mining operations, occur occasionally, as on June 4 and 10, 1902. Under the same heading should perhaps be included the shock of Aug. 27, 1895, near Blisland, which I was led to class as seismic on account of its very elongated, though small, disturbed area.
1 Journ. Roy. Micros. Soc., 1904, p. 7.
2 Proc. Geol. Assoc., vol. xvi (1900), pp. 294–301.
3 Terrain crétacé supérieur de l'Angleterre et de l'Irlande, 1876, p. 139.
4 Geol. Mag., Dec. IV, Vol. VII (1900), pp. 164–5.
5 The following account is based on 76 records from 46 places, and 13 negative records from 12 places. The cost of the inquiry was defrayed from a grant received from the Government Research Fund.