a vast region of fire, and forms a lake larger than the Mediterranean Sea, boiling with water and mud; and proceeding muddy and turbid, and winding about the earth, comes, among other places, to the extremities of the Acherusian Lake, but mingles not with the waters of the lake, and after making many coils about the earth plunges into Tartarus at a deeper level. This is that Pyriphlegethon, as the stream is called, which throws up jets of fire in different parts of the earth. The fourth river goes out on the opposite side, and falls first of all into a wild and savage region, which is all of a dark-blue colour, like lapis lazuli; and this is that river which is called the Stygian river, and falls into and forms the Lake Styx, and after falling into the lake and receiving strange powers in the waters, passes under the earth, winding round in the opposite direction, and comes near the Acherusian lake from the opposite side to Pyriphlegethon. And the water of this river too mingles with no other, but flows round in a circle and falls into Tartarus over against Pyriphlegethon; and the name of the river, as the poets say, is Cocytus.
Such is the nature of the other world; and when the dead arrive at the place to which the genius of each severally guides them, first of all, they have sentence passed upon them, as they have lived well and piously or not. And those who appear to have lived neither well nor ill, go to the river Acheron, and embarking in any vessels which they may find, are carried in them to the lake, and there they dwell and are purified of their evil deeds, and having suffered the penalty of the wrongs