Which gathered together perforate that cavern.

From rock to rock they fall into this valley;
Acheron, Styx, and Phlegethon they form;
Then downward go along this narrow sluice

Unto that point where is no more descending.
They form Cocytus; what that pool may be
Thou shalt behold, so here 'tis not narrated."

And I to him: "If so the present runnel
Doth take its rise in this way from our world,
Why only on this verge appears it to us?"

And he to me: "Thou knowest the place is round,
And notwithstanding thou hast journeyed far,
Still to the left descending to the bottom,

Thou hast not yet through all the circle turned.
Therefore if something new appear to us,
It should not bring amazement to thy face."

And I again: "Master, where shall be found
Lethe and Phlegethon, for of one thou'rt silent,
And sayest the other of this rain is made?"

"In all thy questions truly thou dost please me,"
Replied he; "but the boiling of the red
Water might well solve one of them thou makest.