Notices of Earthquake Shocks felt in Great Britain, &¢. 363 
fully double the time of the concussion. The noise is like 
what one hears when standing under an arch, and a heavy 
carriage passing rapidly over. The river Earn runs close by 
my house, and did not rise on the 23d October as at other 
times, although it had rained for two days and two nights pre- 
viously. The weather was thick and warm, with some (liffi- 
culty of breathing. I have felt many earthquakes before this 
year; I heard many of them from 1795 to 1799, and they 
were generally in the harvest time. I felt a very violent one 
in September 1801. I do not think there was any differance 
in their character, from those we had lately. But none were 
so violent as that on 23d October, and there have not ‘been 
in any one year so many of them as in this year. All of them 
proceeded from the same quarter. In regard to my stacks, 
they were all standing right at nightfall of the 23d, and next 
morning one was found overturned, lying to the W.S.W.., and 
another almost over, in the same direction. Others were 
swung about on the props, and leaning in the same direction, 
and had all to be taken down. The stacks were of oats, and 
standing on level ground, and properly propped with props 
101 feet long. At the bottom the stacks were 103 feet wide, 
and were 14 feet high.” 
Lawers House, 2 miles east of Comrie-—Mr Williamson, 
who was staying there at the time, writes :—“ Nothing parti- 
cular occurred between the 12th October and the night of the 
23d, except that every day up to that date, more or less rain 
had fallen. The clouds were black and heavy, the mist hung 
upon the hills, and the atmosphere motionless. At 15 minutes 
past 10 o’clock in the evening, without any previous warning, 
a loud and terrific explosion struck the ear, and instantly fol- 
lowéd the shock, appearing to the sense as if a blow had been 
given to every piece of furniture in the room, and the earth 
for a few seconds was thrown into violent agitation. I did 
not experience in this, or any of those previous shocks, any 
waving of the earth; but a tremulous motion, passing along 
to the East, was imparted to every object. I immediately ran 
to the barometer (and I fortunately had set it at 12 o’clock 
on the day of the 23d), I found it had fallen nearly an inch; 
and immediately marked it again, standing at 29,8, and re- 
