102 Mr D. :Miliio on EarHfjiiake-Shocks fdt in Great BfUaln, 



eluded to be an eartlKiuuke. The undulation came from the 

 north and proceeded to the south ; and after it had passed, it 

 was immediately followed by a tremulous movement of the 

 earth from the west towards the east, and then from the east 

 back again to the west. The clock which stood upon the north 

 wall of the house, was several times moved towards the south, 

 and once, I think, was five or six inches off the perpendicular. 

 In the flat immediately above the ground floor, where 1 was 

 sitting, and in the attic store^^ the shock was so severely felt, 

 that some of the members and servants of the family were 

 raised from their sleep ; and some of them were nearly thrown 

 out of bed altogether. The shock must therefore have been 

 more violent in the upper than the lower parts of the house. 



" The first heavy undulation, which I have already men- 

 tioned, appeared to elevate me about four or five inches, and 

 then I gradually sunk down again, precisely in the same way 

 as a boat falls down, after having been lifted upon the top of 

 a high wave. The tremulous motion which followed this, was 

 much more sudden though less violent in its eff'ects. No noise 

 of any kind preceded, accompanied, or followed the earth- 

 quake at Tlu•o^k. As I immediately went to the door to 

 examine the state of the atmosphere, every thing was per- 

 fectly btill ; there was not a breath of wind, but the rain fell 

 heavily, as it had done y\ think) the two preceding days and 

 nights, without intermission. I may mention a circumstance 

 which I have not seen taken notice of in any account which I 

 have seen given of the late earthquake, and it is, that I am con- 

 fident that it was accompanied with an electric shock. I was 

 perfectly calm and collected at the time when it came on, 

 and never had any doubt of what it was, nor was I at all 

 alarmed for the consequences ; but the feeling produced upon 

 my body, was exactly similar to what an electric shock has in 

 other circumstances had upon me. In this oi)inion I am not 

 singular. The Rev. Mr Brown of Alva is confident that he felt 

 an electric shock likewise ; I may also mention that the sound 

 which he heard, ^vas vei'y loud and terrific. I do not think, at 

 least I have never been informed of the iiound being heard 

 any where but upon rocky and rising ground. The earthquake 

 did not last more than live seconds altogether. So far iS I 



