Book ii

. Line 568._

A gulf profound as that Serbonian bog Betwixt Damiata and Mount Casius old, Where armies whole have sunk: the parching air Burns frore, and cold performs th' effect of fire. Thither by harpy-footed Furies hal'd, At certain revolutions all the damn'd Are brought, and feel by turns the bitter change Of fierce extremes,--extremes by change more fierce; From beds of raging fire to starve in ice Their soft ethereal warmth, and there to pine Immovable, infix'd, and frozen round, Periods of time; thence hurried back to fire.

_Paradise Lost. Book ii . Line 592._

O'er many a frozen, many a fiery Alp, Rocks, caves, lakes, fens, bogs, dens, and shades of death.

_Paradise Lost. Book ii . Line 620._

Gorgons and Hydras and Chimæras dire.

_Paradise Lost.