Profe effor Witt rAMS | on Earthquakes. 27$ 
** people retired to the high lands, fearing the confequence of | 
its return : and when it came in, it arofe fix feet higher than 
*¢ ufual, fo as to overflow. abe low lands. There was: no fhock 
te felt at the above time.’ 
As this: extraordinary motion of the fea happened about nine 
; hours after the great fhock : was felt in New-England, it feems 
` yery Ray to have been occafioned by the fame convulfion of 
the earth. As this earthquake went off fouth-eaftward into the 
| "anti, it would país. confiderably to the. eaftward of Sz. 
" Martin 5 which has about 18° of north latitude, with 627 ° 
of weft longitude. And this was the cafe.at theifland. There 
was no fhock felt ; but the motion of the fea was probably 
“owing to a great agitation, raifed ata confiderable, diftance,, in 
fome part of the ocean, by ‘the , paflage, or by an WWE. of 
“the earthquake, and from ‘thence ‘propagated . to that ifland.— 
"And what feems to bea confirmation, of this, the: length of 
` "time was no greater than what feems neceffary. for fuch a, pur- 
"'pofe. "We cannot, indeed, ftate, with great accuracy, the ve- 
_Jocity with which the carthqueke moved : but yet it is very 
“evident from its duration, and being preceded witha toar, that 
"ts motion was | zot very fwift : and that of the waves, raifed 
hereby, and propagated to the land, muft have been much 
— flower : both of which might eafily take up nine hours in be- 
. ‘ing propagated, and that-in-a circular. direction, to fuch a dií- 
tance as that of Boffen and Sz Martin's. The extent, there- 
"fore, of this earthquake; from fouth-weft to north-eaft, muft 
| have been about eight hundred miles : but from north-weft to 
-. fouth-eaft, it reached at Jeaft nineteen hundred j and, perhaps, 
many more. = "Hn ione 
Lila "T As 
