122 Mr D. Milne on Harthquake-Shocks felt in Great Britain. 
surrounded by hills and rising grounds. It is bounded on the 
north by the base of the Grampian range,—on the west by the 
Aberuchills hills,—on the south by a range of rising grounds, 
the highest of which is named Top Turlom, on the east by a 
ridge of similar grounds or hills crossing the valley of the Earne 
at Strowan and Clathin. In connection with the north boun- 
dary we have Glenlednaig separated from Comrie by the 
conical hill of Dunmore, being the eastern extremity of a range 
of hills forming a part of the base of the Grampian range, 
commonly termed the hills of Dunira. Among these, almost 
direct north from the east end of Locherne, lies a small lake 
of the name of Lochboultachan, in the centre of a small cir- 
cular glen of the same name. Among these hills, and near 
this lake, general opinion has placed the seat of the earth- 
quakes.”’ 
“ The shock of the 23d, at half past 10. p.m., which was 
by far the most severe of any remembered in this neighbour- 
hood, and which was attended with greater tremor or heay- 
ing of the earth, was accompanied with a noise in nature 
and intensity indescribably terrific,—that of water, wind, 
thunder, discharge of cannon, and the blasting of rocks, ap- 
peared combined. Giving a short warning by a distant mur- 
mur, it gradually increased in intensity for some seconds, 
when at length becoming louder than thunder, and somewhat 
similar to the rush of the hurricane, it suddenly changed, 
and a noise resembling that of a blasting rock thrice re- 
peated followed, which again died away like distant thun- 
der.” In reference to the effects of this shock Mr Walker 
states, that ‘“‘in the village towards the north, one house, 
whose gable had been formerly slightly rent in different parts, 
had these rents considerably enlarged. The gable thus in- 
jured looked towards the east. The rents were, after the 
earthquake, from top to bottom. Several other houses in the 
village had portions of their chimnies loosened, and cans thrown 
down,—and the parts thrown down, fell almost invariably to- 
wards the west. At Dundurn, five miles west from Comrie, 
three chimney-tops were shattered, and one is said to have 
been ¢wisted, but in what direction I have not learned.” 
The chimney-tops here referred to by Mr Walker were 
pointed out to the author by Sir D. Dundas, on whose estate 
