t 612 ] 
tc like a mountain, came rolling in ; and about Bel'- 
“ lem caftle, the water rofe fifty feet almofl: in an 
<c inftant ; and, had it not been for the great bay 
“ oppofite to the city, which received and fpread 
<c the great flux, the low part of it muft have been 
<c under water The fame phenomena were ob— 
ferved to accompany the fame earthquake at the Aland 
of Madeira j where we are told, that, at the city of 
Funchal, ££ the fea, which was quite calm, was ob- 
“ ferved to retire fuddenly fome paces j then rifing 
“ with a great fwell, without the leafl: noife, and as 
££ fuddenly advancing, it overflowed the flrore, and- 
<£ entered the city. It rofe full fifteen feet perpen- 
£C dicular above high-water mark, although the tide, 
* £ which ebbs and flows there feven feet, was then 
<£ at half ebb. In the northern part of the ifland, 
<£ the inundation was more violent, the fea retiring 
<£ there above one hundred paces at firff, and fud- 
<£ denly returning, overflowed the fhore, forcing 
t£ open doors, breaking down the walls of feveral- 
ft magazines and ftorehoufes, and carrying away, in 
<£ its recefs, a confiderable quantity of grain, and 
<£ fome hundred pipes of wine •f\” 
74. Both thefe appearances (which have been 
obierved to attend feveral other earthquakes, as 
well as this) feem to admit of an eafy folution, fup- 
pofing the caufe of them to lie under the bed of the 
ocean ; for, in the farther progrefs of the communi- 
cation between the fire and water, the vapour, that is 
* See Hift. and Philof. of Earthq. p. 316. 
t See Philof. Tranf. vol. xljx. p. 432, or Hift. and Philof. 
Of Earthq. p. 329. 
6 gradually 
1 
