C 432 ] 
Rock of Lifbon, almoft calm; at Lochncfs in Scot- 
land, a perfect calm feverai days before and after ; 
in Mount’s-bay in Cornwall, for five days before, re- 
markable calms, but, at the time of the agitation, 
cloudy and windy : with the Amey of Brifiol, forne 
leagues off Lifbon, a mofl violent ftorm followed the 
agitation of the fea. 
4. There was a great conformity between the ef- 
fects of the earthquake of November 1, 1755, and 
of this of March the 3 iff, 1761; firft, in the extent ; 
2dly, in the rife of the waters ; 3dly, in the calm- 
nefs of the weather in mofl parts j qthly, in the fuc- 
ceffion of time, beginning fooner at Lifbon than on 
the northern fhores, both times. 
Quaere. If this conformity (and others, which 
might ealily be traced from the Tranfadtions) fo re- 
markable in different climates, in many places, (and 
in more it may have paffed away unnoticed) could 
proceed from any thing vague, unfettled, and dif- 
fimilar? 
Quaere. 2dly, If the true caufe in both infiances 
was not fome explofions in, and eruptions from, the 
fame fubterraneous caverns of the earth, caverns cir- 
cumfcribed as before, and branched off nearly in the 
fame dire&ion, the fame dudts and grotts communi- 
cating the fhock of March the 31ft, 1761, (as they 
did before on the firfi of November 1755) to the 
waters of the Britifh files, and fome iflands in Ame- 
rica, but not with equal force, nor diffufing their 
tremors fo univerfally to land, fea, lake, and pond, 
the inflammable materials being either not equal in 
quantity, or not equally combufiible or explofive ? 
