C 4H 1 
about four o’clock in the afternoon, there arofe a 
fog, which came from the fea, and covered the val- 
lies ; a thing very common in the fummer, but rare 
in this feafon of the year. Soon after the wind 
changing to the eaft, the fog returned to the fea, col- 
lecting itfelf, and becoming the thickeft I ever faw. 
As the fog retired, the fea rofe with a prodigious 
roaring. 
The I ft of November, the day broke with a fe- 
rene fky, the wind continuing at eaft ; but about nine 
o’clock the fun began to grow dim, and about half 
an hour after we began to hear a rumbling noife, 
like that of carriages, which incieafed to fuch a de- 
gree as to equal the noife of the loudeft cannon j and 
immediately we felt the firft ftiock, which was fuc- 
ceeded by a fecond and third ; on which, as on the 
fourth, I faw feveral light dames of fire iftuing 
from the fides of the mountains,, refembling that 
which may be obferved on the kindling of charcoal. 
In the fpot, on which I remained till the third 
fhock was over, I obferved the walls to move from 
eaft to wed. Removing from thence to another 
fituation, from whence I could difeover the fea-coaft, 
I obferved from one of the hills called the Fojo, 
near the beach of Adraga, that there iftued a great 
quantity of fmoke, very thick, but not very black ; 
which ftill increafed with the fourth fhock, and af- 
ter continued to iffue in a greater or lefs degree. Juft 
as we heard the fubterraneous rumblings, we ob- 
ferved it would burft forth at the Fojoj for the 
quantity of fmoke was always proportioned to the 
fubterraneous noife. This I faw continue till the 
noon of the 2d of November, when I retired from 
the 
