178 
Proceedings of the Royal Society 
Hynisli.— 11 On the 28th, at 6 p.m., a shock of earthquake was 
felt here; the oscillation being pretty strong the shaking of the 
houses and floors being plainly felt for about three or four seconds. 
A rumbling noise, as of distant thunder, was heard immediately 
preceding the shock.” 
Skerry vore . — “ The lighthouse was visited by a very sharp shock 
of earthquake on the 28th November, at 5.18 p.m. It commenced 
with a low rumbling and rolling noise like distant thunder, and in 
a few seconds increased to a sharp rolling jerking motion. I was 
on watch at the time, and observed the lamp glass strike the funnel 
repeatedly. The whole tower from the foundation was in the same 
motion. The first assistant was in the kitchen at the time, and his 
description of the feeling was the same. The third keeper was in 
bed, and was started out of sleep, but could not tell the cause. We 
are of opinion the trembling motion lasted about eight seconds. 
The weather at the time was stormy, with strong breezes from S.W. 
At 8.25 p.m. observed several flashes of lightning, but no thunder 
heard. Next day we looked over the building, but could not find any 
damage done. I may state that this is the fifth shock that I have 
felt since I joined the service, and must say this one was the 
sharpest of the whole.” 
Earraid . — “ On the 28th, at Earraid, a slight shock of earthquake 
was felt, and a rumbling sound for about two seconds at or about 
6 p.m. also slightly felt on Iona.” 
Dhuheartach . — “ At the rock (Dhuheartach) we felt nothing of 
the shock.” 
Phladda . — “On the 28th, at 5.18 p.m. we felt a shock of an 
earthquake, lasting from five to eight seconds, both in the light-room 
and dwellinghouses, making everything shake and rattle. The wave 
motion appeared to us to travel from W. S.W. to E.N.E. There was 
a long rumbling noise at the time.” 
Lowlandman’s Bay (Shore Station for Skervuille Lighthouse).— 
The lightkeeper writes : — “ My wife made the following statement to 
me on coming ashore from the lighthouse — that on the evening of 
the 28th, she felt as if the chair on which she sat was being with- 
drawn from under her, and heard a rumbling noise, the dishes were 
