And thus in the earthquake of 1692, _Deal_ castle is one of them built by _Henry_ VIII. the walls are of immense thickness, and strength; yet they shook so sensibly, that the people living in it, expected it was falling on their heads. And this is the case in all earthquakes: the more substantial the building, the more violent is the shock: exactly the mode of electrical vibration. And this Dr. _Hales_ takes notice of and others; that an earthquake shatters rocks of marble, more easily than the _strata_ of sand, earth, or gravel. In the earthquake here of 1692, a great cliff fell down near _Dover_; and part of _Saltwood_-castle wall. 'Tis from hence we account for that observation, that when we electrify any person; upon a touch, the pain and blow of the shock is felt at the joints, the wrist, elbow, and shoulder, for instance, more than in the intermediate parts; because _there_ is the greatest quantity of solid. At the same time, that the force of electricity in solids, is as the quantity of matter: we see most evidently, by innumerable experiments, that water is equally assistant in strengthening, and conveying the force of electricity; and _that_ in proportion too to its quantity. And hence is to be deduc'd the reason of my observation; that the most frequent and dreadful earthquakes have fallen upon maritime places. And I find the same is taken notice of in some degree, by _Acosta_, by _Dolittle_, who wrote on that in 1692, and others. In the dreadful catastrophe at _Port-Royal_ then, 'tis notorious, that its violence was chiefly near the sea. So _Lima_ could not suffer without its port of _Callao_. Even in those so lately felt by us, they were sensibly more violent towards the river, than farther from it. In that earthquake which was felt in _England_, in the year 1692, (which was very much like these with us) there were no houses thrown down, nor persons kill'd: but it reach'd more particularly _Sheerness_, _Sandwich_, _Deal_, _Dover_, _Portsmouth_, and the maritime parts of _Holland_, _Flanders_, and _Normandy_. In this that happened on _Sunday_ the 18th of _March_ last, at _Bath_; it was felt particularly and strongly at _Portsmouth_, seven miles above and below it, on the sea-side; all round the isle of _Wight_, at _Southampton_, the sea-coast of _Selsey_, south of _Chichester_, _Arundel_, and the whole coast of _Sussex_, without going up the land; and across the sea to the islands of _Jersey_ and _Guernsey_. On _Monday_ night, the 2d of this instant _April_, 1750, at ten o'clock, at _Leverpool_, a shock of an earthquake. And felt in several other places in the neighbourhood; but particularly at _Chester_, and _Warington_. If we look into ancient history, we find 197 years before Christ, an earthquake shook terribly the isle of _Rhodes_, damag'd many cities: and some quite swallow'd up. Seventeen years before Christ, many cities in the isle of _Cyprus_ destroy'd.