124 Mr D. Milne on Earthquake Shocks felt in Great Britain. 
higher, and, upon one occasion (15th September), far higher. 
It must be said, however, of this last rising, that for thirty 
years previous, there had been none like it’, Mr Walker adds, 
generally, of the previous part of the month of October, that 
‘the air felt mild, inclining to warm, and saturated with 
moisture,—circumstances that frequently and. for long have 
been remarked as concomitants of these phenomena.” 
(2.) Mr Cameron, parochial schoolmaster—‘ The nature 
of the noise has been compared to various things ; but certainly 
the more violent appeared to me to resemble thunder more 
than any thing else,—certainly much deeper toned and more 
awful, and felt as if immediately under us, and causing some 
immense bedy to strike two or three strokes under our feet, 
with a momentum to make the earth and every thing on it to 
vibrate to and fro, and then move off with a tremulous mo- 
tion till it dies away in the distance. The slight ones are 
more aptly compared to the noise caused by the blasting of a 
soft rock at a considerable distance, followed by the reverbe- 
ration of the surrounding mountains. Noises of the louder 
kind continue very nearly a minute,—the slight ones not 
above one-third of that time. As to the direction of the 
shocks, many of the gentler kind which were distinctly heard 
in Comrie, were not heard to any distance to the north or 
south of the village ; and while they were not traceable much 
further west than Dunira, they were distinctly felt to the 
east, at least as far as Crieff. By this test, the direction of 
the noise seems to be from west to east. This is corroborated 
by the appearance of the chimney-tops here that were moved. 
Any stones that fell, fell to the west ; and when any were ob- 
served off the perpendicular, the inclination was westward ; 
and from the circumstance of more of the milder shocks being 
heard at Leichdin to the north of the village, it would appear 
that the centre of these is a particular spot to the north or 
_ north-west of Comrie, and such certainly was my own impres- 
sion from the direction in which they were heard. When 
shocks oceur, the atmosphere is almost invariably hazy and 
foggy. The 23d October was a deluge of rain, Onthe 12th 
October, when we had seven or eight shocks, the day was re- 
-markably dark and murky. On the 14th (when shocks also 
