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This famous city was wholly fwallowed up j no 
remains left. 
This laft earthquake was likewlfe felt at Tetuan 
and Tangier, but without any other damage than 
that the fountains of Tangier were dried up for the 
fpace of twenty-four hours. 
Thefc are the trueft and freflieft advices, that have 
been received at Gibraltar, to the ift of January 
1756. 
LETTER XVII. 
Account of the Earthquake in the If and of Ma- 
deira, Nov. I, i/ff, tn a Letter from Dr. Tho. 
Heberden, to his Brother Dr. William Heberden, 
F. R, S, 
Read Jan. 8, T Ovember the iff, 1755, in the city 
*756- qP Funchal, on the ifland of Ma- 
deira, at half an hour paft nine o’clock in the morn- 
ing, was perceived a fhock of an earthquake. The 
firft notice thereof was a rumbling noife in the air, 
like that of empty carriages pafling haftily over a 
Rone pavement : immediately the floor moved with 
a tremulous motion, vibrating very quickly j the 
windows rattled, and the whole houfe feemed to 
fliake. The fhock lafted a full minute ; during which 
the vibrations, tho’ continual, abated and increafed 
twice very fenfibly, in point of force (not unlike 
what I have obferved in an echo from the difcharge 
of a fowling-piece, oppofite to a range of mountains, 
whence 
