In 1877, my father, Mr David Stevenson, communicated to the Society a notice of earthquake shocks in Argyllshire (see Proceedings, vol. ix.) from observations made by the keepers at several lighthouses, which the late Dr Bryce undertook to use in his intended visit to the west of Scotland, to trace the source of the earthquake 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.