[295]
Hinc seems to mean that it is
only after passing the gate of Orcus that
they see the way to Acheron. Acheron is
called ‘Tartareus’ from its dismal associations,
though it is not, like Phlegethon v.
551, a river specially surrounding Tartarus,
but apparently encompasses the whole of
the lower world. But Virg.'s conception
of the four infernal rivers, as given by
Hom., is very confused. Hom. says briefly,
Od. 10. 513 foll.:
“ἔνθα μὲν εἰς Ἀχέροντα Πυριφλεγέθων τε
ῥέουσιν
Κωκυτός θ᾽, ὃς δὴ Στυγὸς ὕδατός ἐστιν
ἀπορρώξ:
πέτρη τε, ξύνεσίς τε δύω ποταμῶν ἐριδούπων,
”
but he does not mention them at all when
he comes to the actual journey of his hero.
Virg. conducts Aeneas over the water circumstantially,
but from his description we
should infer that there is only one river,
which, after being called Acheron or Cocytus
here, turns out eventually to be Styx,
v. 385. Heyne remarks with justice (Excursus
9) that the poet would have found
it awkward to have to describe the passage
of all three, especially as Styx alone is
said to surround the lower world nine
times, v. 439. Generally we may say that
Virg. found the notion of a single river of
death most convenient for poetical purposes,
but that he wished as usual to introduce
the various points of the legends
he followed, and so he employed the names
Acheron, Cocytus, and Styx, whenever the
river was to be spoken of, with a dim conception
of Acheron as emptying itself into
Cocytus, and perhaps of Styx as the most
inward of the three, and a clear one of
Phlegethon as specially surrounding Tartarus.
Plato gives a much more definite
description in his Phaedo, pp. 112, 113,
speaking of four rivers, Ocean, Acheron,
Pyriphlegethon, and Styx, the last of
which disappears under the earth and reappears
as Cocytus, an attempt apparently
to realize the picture in Hom.: and later
Roman poets, as Heyne observes, Exc. 9,
have introduced varieties of their own.