It was a little curious and rather sardonically diverting, to compare
these masterly, yet not wholly successful, and indeterminate tactics of
the accomplished Glen, with the unfaltering stream of Beloved Pierres, which not only flowed along the top margin
of all his earlier letters, but here and there, from their subterranean
channel, flashed out in bright intervals, through all the succeeding lines. --Pierre (1852)
As in the prairie tribute to Irving, Melville exploits the double sense of "margin" as space on a page and as the edge or bank of a river. Not only that, Melville (in
what for him is a characteristic image) pictures the word-stream flowing underground, through a "subterranean channel" of text, but periodically resurfacing at "bright intervals." Just so does the Irving tribute picture the text-river as intermittently hidden, flowing down, underground, "anon delving into cave-like
clefts,—romantic recesses" below the visible surface:
They have spared Irving, his writings, flowing through broad margins of letter press; to what
can we compare them, but to a crystal streamlet purling through flowery
savannahs and sweet shady groves; and anon delving into cave-like
clefts,—romantic recesses, where, of old, the fairies sought shelter
from the glare of day. --Scenes Beyond the Western Border, June 1851
They have spared Irving: his liquid sentences flowing through glittering margins of fairest typography,—to
what can we compare them, but to a crystal streamlet purling amid
flowery savannas and sweet shady groves; and anon delving into cave-like
clefts,—romantic recesses, where, of old, the fairies sought shelter
from the glare of day. --Scenes and Adventures in the Army
In
Redburn Melville imagines the singer's voice as "a musical brook." In this instance, words are the metaphorical margins of the flowing melody. As in the Irving tribute, the banks of the figurative stream are pictured in alternating shades, and are decorated with flowers.
His voice was just the voice to proceed from a small, silken person
like his; it was gentle and liquid, and meandered and tinkled through
the words of a song, like a musical brook that winds and wantons by
pied and pansied margins. --Redburn