VOL. XLIX.] PHILOSOPHICAL TRANSACTIONS. 687 



JjXFII. Of the Earthquake felt at Glasgow and Dumbarton; also of a Shower 

 of Dust Jailing on a Ship bettveen Shetland and Iceland; in a Letter from Dr. 

 Robert ^Fhytt, Prof, of Medicine in the Univ. of Edinburgh, p. 509. 



The earthquake at Glasgow and Greenock happened in the night between the 

 30th and 31st of December, nearly at the same time. It was felt at Glasgow by 

 almost every person that was awake, and out of bed, and also by some in bed, and 

 who were not fast asleep. There were 3 successive shocks, or risings as it were of 

 the earth. It was felt not only at Glasgow and Greenock, but also at many other 

 places in the neighbouring country ; particularly at Dumbarton. 



By letters from a passenger on board a ship bound from Leith for Charles- 

 town in South Carolina, it appears that on the night of the 23d or 24th of Oc- 

 tober last, when the weather was quite calm, a shower of dust fell on the decks, 

 tops and sails of the ship, so that next morning they were covered thick with it. 

 The ship at this time was between Shetland and Iceland, about 25 leagues distant 

 from the former, and which was the nearest land. This shower was probably 

 owing to the great eruption, which happened at mount Hecla in Iceland, in 

 October. 



LXVIII. Extract of a Letter from Mans. Bonnet, F. R. S. Dated at Geneva, 

 Jan. 30, 1756, concerning the Earthquake on the \Ath of November, 1755, 

 in Fialais in Swisserland. Translated from the French, p. 511. 



Valais is thought to have been more shaken by the earthquake than our city 

 and its neighbourhood. The earthquake felt here, happened Nov. 14, at 3 

 in the afternoon. It proceeded from the north, and lasted a minute. The earth 

 opened on the mountain ; and the opening was large enough to thrust one's 

 hand in, and no bottom can be found. In another part of the mountain the 

 earthquake opened a spring sufficient to turn 2 mills. The earth has been opened 

 in another place. The opening is round, and no bottom can be discovered. 

 The eartVi continues to shake almost every day, but these shocks are much gentler 

 than the first. 



LXIX. Extract of a Letter from Mons. Allemand, F. R. S. Translated from 

 the French. Dated Leyden, Jan. 27 , 1756. p. 512. 



On the night between the 26th and 27th of the last month, December 1755, 

 between 1 1 and 12 o'clock at night, there was a considerable earthquake on the 

 frontiers of this country. It was felt at Liege, Maestricht, Nimeguen, Arnheim, 

 and Breda. There were 3 different shocks, the last of which happened at about 

 4 in the morning, but without any noise or accident. I have been informed by 

 letters from Swisserland, that several shocks were felt there, and that the salt- 



