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but flight; and no motion was felt in the ground. 
You will fee a more circumftantial account of it in 
the Dutch Gazette of this week. 
Extraa c/ L E T T E R XXVII. 
From Monf. Allamond, Profejfor of Ph'ilofophy at 
Leyden, and F. R, S. dated there Decern. i/yy, 
to Mr. Trembley, F. R. S. Franjlated from the 
French. 
Read Dec. i8, jL LL that I have been able to colledt, 
* 755 - that is certain, with relation to 
what was obferved here concerning the earthquake 
of the firfl; of November, amounts to but very little. 
Between half an hour after ten and eleven in the 
morning, in fome of the canals of this city, the 
water rofe fuddenly on the quay, fltuated on the 
fouth. It returned afterwards to its bed, and made 
feveral very fenflble undulations, fo that the boats were 
ftrongly agitated. No-body could inform me to 
what height the waters rofe, except a miller, who 
lives between Delft and the Hague. Having ob- 
ferved this Angular motion of the water in a canal, 
he ran home for a pole, which he plunged into the 
water,- and faw it rife up the pole at leaf! a foot 
high, though the air was extremely calm. 
The fame kind of motion was perceived here in 
the tuns of water of two brewhoufes, and in thofe 
of three brewhoufes at Harlem, The branches of 
the Roman catholic church of Rotterdam, which 
hung from long iron rods, made feveral ofcillations. 
A tallow-chandler at the Hague was furprifed to- 
hcaiv 
