Inaudible by daylight, blend their notes
With the loud streams: and often, at the hour
When issue forth the first pale stars, is heard,
Within the circuit of this fabric huge,
One voice—the solitary raven, flying
Athwart the concave of the dark blue dome,
Unseen, perchance above all[400] power of sight—
An iron knell! with echoes from afar
Faint—and still fainter—as the cry, with which
The wanderer accompanies her flight