176 
Proceedings of the Royal Society 
1. The Earthquake of 28th November 1880 in Scotland and 
Ireland. By Charles Alexander Stevenson, B.Sc. Edin- 
(Communicated by Professor Geikie). 
In 1877, my father, Mr David Stevenson, communicated to the 
Society a notice of earthquake shocks in Argyllshire (see Proceed- 
ings, vol. ix.) from observations made by the keepers at several 
lighthouses, which the late Dr Bryce undertook to use in his in- 
tended visit to the west of Scotland, to trace the source of the earth- 
quake waves of 1877, an intention which, however, was suddenly 
terminated by his lamented accidental death at Inverness. 
Another earthquake shock, which visited Scotland and the north 
of Ireland on the 28th November 1880, has afforded the means of 
acquiring further observations, of which I think (in connection with 
those formerly given) the Society may consider it not unimportant 
to have a record in their Proceedings. These observations, as com- 
municated from the lighthouse stations, are in the following 
terms : — 
Butt of Lems . — “ On the 28th we felt a shock of earthquake ; it 
made the bed I was lying in tremble. Those who were in the kitchen 
felt the shock quite distinctly ; it made the dishes on the dresser 
ring. It was also felt by a number of other people throughout the 
parish. There was a gale at the time accompanied by lightning and 
heavy showers of hail and sleet.” 
Island Glass . — “ At 5.30 p.m. on the 28th, during a lull, the tower 
received a severe shock, which caused the glass of the mechanical 
lamp to shake, also the table and apparatus. During the night of 
28th observed vivid flashes of lightning.” 
Monach . — “ On Sunday evening the 28th November, at 5.20 p.m., 
the assistant, when on watch in the light-room, felt a strange shock, 
which shook the tower and made the glass on the lamp rattle. The 
motion was quite different from what is caused by a fierce blast of 
wind. The motion in gales is more of a rocking, but this was like a 
shake and a tremor throughout the whole building. It only con- 
tinued for a few seconds. There was no heavy sea or lightning or 
