Dr. C. Davison — British Earthquakes. 



297 



(principal 



1904. 

 March 3, about 1.5 p.m. Penzance. 

 June 21, about 3.30 a.m. Leicester. 



5.28 a.m. Leicester (principal 



earthquake). 



July 3, 2.28 p.m. Derby. 



3.21 p.m. Derby 



earthquake). 



11.8 p.m. Derby. 



Sept. 18, 4.7 a.m. Dunoon (Argyllshire). 

 Oct. 21, about 6.5 a.m. Beddgelert 



(Carnarvonshire). 



1905. , 

 Jan. 20, 1.50 a.m. St. Agnes (Cornwall). 

 April 23, about 1.30 a.m. JDoncaster. 



1.37 a.m. Doncaster (principal 



earthquake). 



about 4 a.m. Ochil. 



July 23, 12.15 a.m. Ochil. 



July 26, about 6.3 p.m. Ochil. 



Sept. 21, 11.33 p.m. Ochil (principal 



earthquake). 

 Sept. 22, about 1.30 a.m. Ochil. 

 Sept. 25, early morning. Ochil. 

 Sept. 30, 9.45 p.m. Ochil. 

 Oct. 28, 10.53 a.m. Ochil. 

 Dec. 22, 9.15 p.m. Ochil. 



1906. 

 May 7, 8.20 p.m. Fort William. 



List of JEarthqualces. 



Aug. 24, 5.25 p.m. Ochil. 

 Aug. 27, 5.56 a.m. Derby. 

 Sept. 28, 12.25 p.m. Ochil. 

 Oct. 3, 4.32 a.m. Ochil. 

 Oct. 8, 7.24 a.m. Ochil. 



8.16 a.m. Ochil. 



Oct. 12, 7.20 a.m. Ochil. 

 Oct. 20, 7.15 a.m. Ochil. 

 Oct. 24, 7.11 p.m. Ochil. 

 Oct. 26, 7.15 p.m. Ochil. 

 Oct. 30, 12.15 p.m. Ochil, 

 Dec. 28, 4.12 p.m. Ochil. 

 Dec. 29, 1.30 p.m. Ochil. _ 

 Dec. 30, about 1 a.m. Ochil. 



Dec. 



Jan, 

 Feb 



- 2.10 p.m. Ochil. 



- 4.15 p.m. Ochil. 

 31, 1 a.m. Ochil. 



1907. 



17, 1.54 p.m. Oban. 



10, 5.40 p.m. Ochil. 

 March 19, 7.33 p.m. Ochil. 

 April 7, 11.11p.m. Ochil. 



11.19 p.m. Ochil. 



April 8, 6.45 a.m. Ochil. 

 April 11, 5.30 a.m. Ochil. 



5.40 a.m. Ochil. 



6.5 a.m. Ochil. 



June 14, 1.59 a.m. Ochil. 

 June 20, 3.36 p.m. Ochil. 

 July 3, 3.40 a.m. Swansea. 

 July 5, 9.48 p.m. Ochil. 

 July 21 or 28, afternoon. Ochil. 

 Sept. 18, about 5.30 p.m. Ochil. 

 Sept. 27, 8.12 a.m. Malvern. 



The more important of these earthquakes have been described in 

 the following papers : — 



" The Penzance Earthquake of March 3rd, 1904 " : Geol. Mag., Vol. I (1904), 



pp. 487-490. 

 " The Leicester Earthquakes of August 4th, 1893, and June 21st, 1904 " : Quart. 



Journ. Geol. Soc, vol. Ixi (1905), pp. 1-7. 

 " The Derby Earthquakes of July 3rd, 1904 " : ibid., pp. 8-17. 

 "The Doncaster Earthquake of April 23rd, 1905 " : ibid., vol. Ixii (1906), pp. 5-12. 

 "TheSwanseaEarthquakeof June 27th, 1906": ibid., vol.lxiii(1907), pp. 351-361. 

 " The Ochil Earthquakes of September, 1900, to April, 1907 " : ibid., vol. Ixiii 



(1907), pp. 362-374. 



The remaining earthquakes form the subject of the present paper. 

 I have also added brief notices of some earth - shakes in mining 

 districts, and of doubtful or spurious earthquakes, the occurrence of 

 which was reported in newspapers, without any subsequent statement 

 of their artificial origin. 



1. Dunoon Earthqtcahe : Sept. 18th, 1904. — Time of occurrence, 

 4.7 a.m.; intensity, 5; centre of isoseismal 5, in lat. 55° 54-5' I^., 

 long. 5° 10-4' W. ; number of records 79, from 28 places, and negative 

 records from 4 places. 



The disturbed area is traversed by two isoseismal lines of intensities 

 5 and 4. The former is 26 miles long, 15 miles wide, and about 



