A Blakean vision destined to recur in Stephen's day, here in apocalyptic combination with the fall of Troy and of local autonomy to the encroaching Roman Empire (e.g., Pyrrhus). See also passage in Proteus http://www.infiniteulysses.com/ulysses/43 and, most dramatically, in Circe http://www.infiniteulysses.com/ulysses/542