EARTHQUAKES OP NOV. 15 TO DEC. M, 1890. 625 



turbcd area to be drawn or the Dosition of the epicentrum deter- 

 mined. It will be noticed that two places, Ijolcskine and Cawdor, 

 are widely separated from the rest. Judging from the data in our 

 possession, however, we may possibly infer that the ejHcentrum was 

 not very distant from a point 3| miles S. 20° W. of Inverness. 



I know nothing as to the nature of this shock. Its intensity was 

 IV. at Balnafettack, a place probably close to the epicentrum. At 

 Clachnaharry its duration was 3 seconds. 



d. Nov. 16, 20'> SO'". 



Intensity. — V. 



Epicentrum.- Lat. 57° 26' 10" N., long. 4° 19' 10" W., >. e. 5 miles W. 39° S. 

 of Inverness. 



The information respecting this shock is more abundant. I have 

 37 records from 21 places. The shock was felt at the follow- 

 ing places : Aldourie, Balnafettack, Beauly, Boleskine, Bunchrew, 

 Cawdor, Clachnaharrj', Clunes station, Dingwall, Dores, Drumna- 

 drochit, Portrose, Eowlis station, Inchbreen, Inverness, Kilmuir, 

 Strathpeffer, and Torbreck. The earthquake-sound was heard at : 

 Aldourie, Balnafettack, Clachnaharry, Clunes station, Dores, Fowlis 

 station, Inchbreen, Inverness, Kilmuir, and Torbreck, but not at 

 Fortrose. The sound was heard, but the shock not felt, at Brin, 

 Errogie, and Invermoriston. 



The disturbed area is 41 miles long, 27^ miles broad, and con- 

 tains about 910 square -miles. Its longer axis is directed from 

 ]S". 38° E. to S. 38 W. ; its centre is about 5 miles W. 39° S. of 

 Inverness. 



The intensity -svas Y. at Clunes station and Torbreck, at least IV. 

 at Inchbreen and Inverness, and less than IV. at Aldourie and Eort- 

 rose. The intensity at the boundary of the disturbed area was 

 probably about III. 



At Clunes station there was a swaying motion of the floor, 

 followed by a violent trembling. The shock was of an undulating 

 nature at Beauly, the sharp jerking motion of the principal 

 earthquake being absent. In other parts of the disturbed area, 

 where the nature of the shock is recorded, only a slight tremor was 

 perceptible. The duration of the shock was 2 or 3 seconds at 

 Clachnaharry and 3 or 4 seconds at Beauly. 



e. Nov, 18, 2^^ 20°^. 



I have received only one record of this shock — from !Mr. D. D. 

 Hacdonald, of Drumnadroehit. He says that it was felt by several 

 people at this place, and that there can be no doubl; as to its occur- 

 rence. It resembled the shock of Nov. 16 at 20*^ 30°^. 



f. Nov. 19, 1'^ 40'". 



So far as I can learn, this shock was felt only at Inverness ; it 

 was not noticed at Clachnaharry or Clunes station. The motion 



