We sat down on a fragment of the walls, and sadly recalling

And instantly from spot of that big jar

There quiver the tremors far and wide abroad.

And with good reason: since houses on the street

Begin to quake throughout, when jarred by a cart

Of no large weight; and, too, the furniture

Within the house up-bounds, when a paving-block

Gives either iron rim of the wheels a jolt.

It happens, too, when some prodigious bulk