Dr. C. Davison— British Earthquakes, 1893-99. 10^ 



Glen Garry Earthquake : Jan. 2, 1893. 



A slight shock, accompanied by a noise as of a carriage passing 

 very rapidly, was felt by Mr. Duncan Grant at Glenquoich at 

 7.20 p.m. The noise was also heard by another observer about 

 three miles higher up the Glen. 



Glen Garry Earth-Sound : Dec. 11, 1893. 



A low rumbling sound, resembling that which accompanies an 

 earthquake, was heard at about 3 p.m. at Glenkingie, Glenquoich, 

 and Lochournhead. There was no perceptible movement of the 

 ground. 



This note is founded on a paragraph in the Oban Times for 

 Dec. 15 (?). 



Somerset Earthquakes : Dec. 30-31, 1893. 



The number of earthquakes that should be included in this series 

 is somewhat uncertain. The most important are those which 

 occurred on Dec. 30 at 11.20 p.m. and on Dec. 31 at 12.28 a.m., 

 and these were followed at about 4 a.m. by a third but much weaker 

 shock. There may also have been four others in the early morning 

 of Dec. 31, but the times are only roughly recorded, and they ought, 

 I think, to be regarded as doubtful earthquakes. They are as 

 follows : — 



a. Shepton Mallet, shortly after the shock at 12.28 ; and Draycot, 

 12.45 or 12.50 a.m. 



6. Shepton Mallet, between 1 and 2 a.m. ; and Wedmore, about 

 1.30 a.m. 



c. Croscombe, about 2.30 a.m. ; and Wookey, about 2.15 a.m. 



d. Street, 2 or 3 minutes after the shock at about 4 a.m. 



The times of the two principal shocks were determined by 

 a signalman at Masbury station, and, as they agree with those 

 given by several other witnesses, they are no doubt correct to the 

 nearest minute. 



For convenience, the isoseismal lines of both earthquakes are 

 shown upon one map (Fig. 1), and the symbols referred to above are 

 therefore not employed. Also, as it would be difficult to represent 

 all the places of observation on so small a figure, I have only 

 marked those which are of importance or which are mentioned in 

 the following pages. The broken lines refer to the first earthquake, 

 the continuous lines to the second. 



First Earthquake : Dec. 30, 11.20 p.m. — The number of records is 

 45, coming from 27 places. There are also negative records from 20 

 places ; and, in addition, two observations from Frome and Whatley, 

 the connection of which with the present shock is doubtful. 



The intensity of the shock was certainly not less than 4, and at 

 Wells may have been as high as 5. The disturbed area is 15^ miles 

 long, 13i miles broad, and contains 159 square miles. Owing to the 

 absence of negative records towards the north-west, it is uncertain 

 whether the boiuidary should not extend a little further outwards 

 on this side. The direction of its longer axis is W. 30° N. and 

 E. 30° S. Its centre lies ^ mile S. 37° W. of Wells. 



