78. Virgil, Aeneid, VI., Davidson's Translation:--Aeneas on a
sudden looks back, and under a rock on the left sees vast prisons
inclosed with a triple wall, which Tartarean Phlegethon's rapid
flood environs with torrents of flame, and whirls roaring rocks
along. Fronting is a huge gate, with columns of solid adamant,
that no strength of men, nor the gods themselves, can with steel
demolish. An iron tower rises aloft; and there wakeful
Tisiphone, with her bloody robe tucked up around her, sits to
watch the vestibule both night and day."
124. This arrogance of theirs; tracotanza, oltracotanza ;
Brantome's outrecuidance; and Spenser's surquedrie.
125. The gate of the Inferno.
130. The coming of the Angel, whose approach is described in the
next canto, beginning at line 64.