[ 6 3 + ] 
107. Secondly , Thofe appearances which feemed 
to depend upon particular circumftances, and of 
which, therefore, unlefs we had a more exaCt know- 
lege of the countries where they happened, it would 
have been impoffiblc to give any account, without 
having recourfe to uncertain conjectures ; of this kind, 
was the greater agitation of the waters in the lakes of 
Switzerland, at the time of the earthquake of the lit 
of November 17 ff, than during the * earthquake of 
the 9th of December following, though the houfes 
upon the borders of them were more violently fhaken 
by the latter. And, 
108. Laflly , Thofe appearances, which only feem 
to have an accidental connection with earthquakes, or 
the caufes of them ; of this kind, are the effeCts which, 
in fome inftances perhaps, they produce on the wea- 
ther j the diftempers which are fometimes faid to fuc- 
ceed them ; the difturbance which, we are told, they 
have fometimes occafioned, during the fhocks, in the 
direction of the magnetic needle, &c. none of which 
are obferved to be conftant attendants on earthquakes, 
nor do they feem materially to affeCt the folution given 
either one way or other. 
* See Monfieur Bertrand’s Memoires fur Us tremblemens de 
Terre. 
LVI. An 
