Profefor Wit L11AMs on Earthquakes. 279: 
as ‘to its courfe. Its extent, however, was confiderable ; being. 
felt not only in the Marsus but in moft of the adjoin- 
ing ftates. T y 
-The fame year, on Noveinbes 1; about 8" P. M. there was 
another earthquake. As ufual, this was preceded with a heavy 
rumbling .noife, which. increafed. to a pretty loud report as it 
came near. . There was a confiderable interval of time between 
the. roar and. the fhake. I endeavoured to make fome. compu- 
tation of it by. this method : juft as the fhock began to abate, 
I looked on _ my, watch.to note-the time. The report I could 
hear for about half a minute after. this. It is probable it was 
about as long in coming on, which would give half a minute 
between the noife and fhake. The /boc£ itfelf was of. the un- 
dulatory kind ; not violent, but fufficient to make the doors and: 
windows jarr and clatter. Its cour/? was very. pénis froi northà 
weft to fouth-eaft, and it was Para iie 1 
ftate, and in New-Hamp/hire. 
In the years 1766, 1769, and 1771, iy were - mall aes 
quakes. Their courfes were all, I think, from : about north- 
welt to fouth-eaft. T heir durations not more than twelve. or 
ticular. cae of them. 
November.29, 1783, about tb T P. M. ibaa was. ano- 
ther {mall ee in N eid Its extent was wey 
| p At Bofin, there. was «E one fhock ; and that M 
violent enough to be generally perceived. At Hartford and 
New-Haven, i in Connecticut, but one {hock was perceived ; 1 
