C £73 ] 
he plainly collected from many of the accounts that 
have been published concerning it, fome of which 
affirm it exprelly : and this wave-like motion was 
propagated to far greater diftances than the other 
tremulous one, being perceived by the motion of wa- 
ters, and the hanging branches in churches, through 
all Germany, amongft the Alps, in Denmark, Swe- 
den, Norway, and all over the Britifh ifles. 
15. Fourthly, It is obferved in places, which are 
fubjedt to frequent earthquakes, that they ge- 
nerally come to one and the fame place, from 
the fame point of the compafs. I may add 
alfo, that the velocity, with which they pro- 
ceed, (as far as one can collect it from the ac- 
counts of them) is the fame ; but the velocity 
of the earthquakes of different countries is very 
different. 
16. Thus all the ffiocks, that fucceeded the fir 11 
great one atLiffion in 1755, as well as the firff itfelf, 
came from the * north- weft. This is afferted by 
the perlon, who fays, he was about writing a hiftory 
of the earthquakes there : all the other accounts alfo 
confirm the fame thing 5 for what fome fay, that they 
came from the north, and others, that they came 
“ fhort, but quick vibrations, the foundations of all Lifbon ; 
<c then, with a fcarcely perceptible paufe, the nature of the mo- 
“ tion changed, and every building was tolled like a waggon 
“ driven violently over rough ftones, which laid in ruins almoft 
“ every houfe, church, GV.” 
For the wave-like motion at Oporto, fee Phil. Trarif. vol. xlix. 
p. 418. for the fame at Gibraltar, fee Hi ft. and Philof. of Earthq. 
p. 322. 
* See Philof. Tranf. vol. xlix. p. 410. 
4E 2 
from 
