[147] When, therefore, a conflagration seizes upon things, a stream of ethereal fire being poured down from above is frequently diffused over them, overrunning many districts of the habitable world; and when a deluge draws down the whole of the rainy nature of water, the regular rivers and torrents overflowing, and not only that, but even far exceeding the ordinary measure of a common flood, and breaking down their banks with their violence, or else overleaping them, and rising to an enormous height, from which they swell and are diffused over all the adjacent champaign country, and the land is in the first instance divided into huge lakes, as the water is continually settling down into the more hollow parts, and afterwards flows still higher, and inundates the isthmuses which separate the lakes, till at last everything presents the appearance of one vast sea from the union of so many waters.