C 431 ] 
Place, 
Time of be- 
ginning. 
Duration. 
Weather 
and wind. 
Degrees of violence, and 
variety of circumftances. 
(22) Fyal, 
one of the 
Azores. 
Alarmed with frequent 
fhocks of earthquakes : 
the molt violent (hock we 
have had of late was on 
the 31ft of March laft. 
(23) Ter- 
oeira, ibid. 
The fea rofe to a great 
hight, and fell again fo 
low, that the quays were 
left dry ; all the lighters 
and fifhing-boats, that 
were hauled up in Porto- 
rico, were carried down 
into the bay, and broken 
to pieces upon the rocks. 
Corollaries. 
1. From thefe accounts, (fuppofing them properly 
authenticated) the violence of this earthquake was 
greateft at, or rather near Lifbon ; perhaps at fea, in 
latitude between 43 and 44, and longitude about 
1 1° 19', where no tremors of land could be obferved, 
and, confequently, the effe&s not fo terrifying, nor 
perceived by fo many, nor lo deftru&ive, as if it had 
happened on the land, and contiguous to Lifbon as 
that of 1755. 
2. It did not begin at Lifbon ; it was felt at Madeira 
two hours before noon ; at and near Lifbon about 
noon; at Cork in Ireland, a quarter after noon; but 
it lafted longer at Lifbon than on any fhores in 
Europe. 
3. The weather was different in different places; 
at Madrid quite calm, with a gentle fhower ; near the 
Vo l. LII. K k k Rock 
