EAKTIIQUAKES OP NOV. l'. TO DIX'. ] 1, 1890. 023 



la its nature the sound does not seem to have differed in any 

 way from those usually hoard during liiitish earthquakes. Detailed 

 description is therefore unnecessary. 



When variations in intensity are noticed, the sound generally 

 began faintly, grew gradually louder to a maximum, and then died 

 gradually away. This was the case at Abernethy, Alness, Ardgay, 

 Boleskinc, Cawdor, Corrimony, Delrachnie, Drumnadrochit, Duthih 

 Errogie, Evanton, Glassburn, Glen Urquhart (the schoolhouseX 

 Kilmuir, Kingussie, and Urray. It will be noticed that, as a rule,' 

 these places are at no great distance from the epicentrum. At 

 Aldourie and Invermoriston the sound, when first noticed, was at its 

 maximum intensity, and died away gradually. At llafford the 

 sound ended suddenly ; and at Lairg it ended suddenly, almost 

 simultaneously with the principal shock. 



The principal vibrations were felt when the sound was loudest at 

 Aldourie, Boleskine, Delrachnie, Drumnadrochit, Evanton, Glassburn, 

 Glen Urquhart (the schoolhouse), Invermoriston, and Kilmuir. 



o. Time-relations of the SliocJc and Sound. — The sound is said to 

 have : 



Preceded the shock at 20 places : Auldearn, Avoch, Badenoch, 

 Boharm, Boleskine, Cawdor, Chanonry Point lighthouse, Dalmunack 

 (near Carron station, Banffshire), Dingwall, Duffus, Duaain Hill 

 (2^ miles S.W. of Inverness), Dyke, Elgin, Feddan, Lairg, Mary- 

 burgh, Xew Spynie, Xewtoumore, Xigg (at Cromarty EeiTy), and 

 Struy. 



Accompanied the shock at 26 places : Achnacarry, Alehousehil- 

 lock (near Cairney), Aldourie, Alness, Balnafettack, Braemore, 

 Burghead, Cromarty lighthouse, Daviot, Dornoch, Drumnadrochit', 

 Dunrobin Glen (near Golspie), Edenkillie, Fort George station' 

 Golspie, Golspie Burn, Helmsdale, Kildouan, Kilmuir, Kingussie^ 

 Loth, Moy, llafford, Strathpeffer, Torness, and Tressady. 



Followed the shock at one place : Clunes station. 



Preceded and accompanied the shock at 5 places : Beaulv, Fort- 

 rose, Glassburn, Inverness, and jS"aii-n. 



.Accompanied and followed the shock at 5 places : Ardgav, Bun- 

 chrubin, Dores, Invermoriston, and Torbreck. 



Preceded, accompanied, and followed the shock at 7 places : 

 Brin, Bunchrew, Cromdale, Delrachnie, Evanton, Invergorden, and 

 Kirkmichael. 



The terms " preceded," " accompanied," and " followed," singly, 

 are vague, and the numbers under these headings would probablv 

 have to be distributed under the last three if these descriptions had 

 been more detailed ; and this indefiniteness is, I regret, owing to the 

 fact that the question on this point was not worded with sufficient 

 exactness. But the observations above recorded are not without 

 their value. If reference be made to the map (p. 620) it will be 

 found that the twent3'-five places at which the sound preceded, 

 or preceded and accompanied, the shock, though not confined to any 

 one part of the disturbed area, are mostly situated in the district 



