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received five fucceffive {hakes. The fconces in the 
chamber were in like manner moved. Ten or twelve 
minutes after, I perceived a fecond fhock, but not 
fo ftrong as the former. The water, which I looked 
upon, remained quiet. The air was calm. There 
was a little fog. The Wind was S.W. Immediately 
after the earthquake, it turned N.E. The news 
from Maeftricht and Utrecht brings word, that they 
have likewife felt it there. 
LXXVIII. An Account of an Earthquake felt in 
Holland, Feb. 18, 1756 ; in a Letter from 
Monf Allemand, Profejfor of Natural 
Philofophy at Leyden, and F. R. S . to Mr. 
Trembley, F.R.S. Dated at Leyden, Feb. 
27, 1756. 7 'ranflated from the French. 
Read March 4, < ’"T^ HERE was felt here a violent 
J /5 6 - of an earthquake on the fhock 
1 8 th of this month of February, three or four minutes 
before eight in the morning. It was not perceived in 
my houfe, nor in many others : but thofe perfon% 
who were in bed, or not in motion, felt it. Two 
of the bells in this city {truck each one lfroke. -A 
confiderable number of people were affedted with a 
kind of vertigo, without being fenfible of the earth- 
quake. It was felt throughout the whole territories 
of this republic. It occafioned much confufion at 
Am tier dam in fome churches, where fervice was 
performing. Many perfons quitted their houfes at 
Maellricht ; but only for a lhort time. Since the 
firft 
