Mr. J. Drummond's Table of Earthquakes at Coinrie. 247 



Aug. 23. High flood. 



30. Flood. 

 Sept. 1. 1 gas explosion. 



2, 9 and 10. Slight flood. 



10. 1 vertical shock at 11| p.m., felt 20 miles. — Changeable, 



diy and fair after the shock, and starlight at the time. 



11. 1 vertical shock at 2| a.m., felt 15 miles. — Fair; rain 



immediately after the shock. 



15. High flood. 



16. 1 gas explosion 



22. 1 gas explosion. 



23. 1 gas explosion. — 1 vertical shock at 1^: a.m., felt 10 



miles. — Changeable. 

 24-. Flood. 

 25. Flood. — 1 gas explosion. — 1 lateral shock at 9 p.m., felt 



8 miles. — Rain. 

 27, 28 and 29. Floods. 

 Oct. 10, 13, 14, 17 and 20. High floods. 



13. 1 tremour at 12 midnight, felt 6 miles. — Fair. 



23. Slight flood. — 1 lateral shock at 1 a.m., felt 8 miles. — 



Rainy. 

 Nov. 3. Flood. — 3 gas explosions. 



5. 1 tremour at 1 a.m., felt 5 miles. — Fair. 



6. 1 gas explosion.— 1 tremour at 8 a.m., felt 6 miles. — 



Changeable. 

 8. 1 gas explosion. — 1 ti-emour at 8 a.m., felt 5 miles. — Fair. 



18. 1 gas explosion. — 1 tremour at 85 a.m., felt 5 miles. — Frosty. 

 29. Slight flood. 



Dec. 1. Flood. 



3. Slight flood. — 1 gas explosion. 



6. Slight flood 1 tremour at 3 a.m., felt 6 miles. — Rain. 



7. 1 gas explosion. 



12. Flood. 



15. High flood. 



19. 1 vertical shock at 1| a.m., felt 5 miles.— Frosty. 



I am aware that some persons who have been keeping a list 

 of shocks reject the very small sounds, and mark the louder 

 ones as slight shocks of earthquakes, whether those sounds be 

 occasioned by the explosions of hydrogen and oxygen gas or 

 not : it is contrary to common sense to call a slight sound a 

 shock of an earthquake. Again, it is to be observed that the 

 people at Comrie were in constant terror during the latter part 

 of 1839, and it is possible that people imagined they heard 

 sounds of earthquakes when there were none: making due 

 allowance for this, it is certain that the sounds were uncom- 

 monly fre<iuent during that year (1839). 



James Drummond. 



