That, disentangled from the shady boughs
Of some thick wood, her place of covert, cleaves
With correspondent wings the abyss of air.
—"Observe," the Vicar said, "yon rocky isle
With birch-trees fringed;[KU] my hand shall guide the helm,
While thitherward we shape[863] our course; or while
We seek that other, on the western shore;
Where the bare columns of those lofty firs,[KU]
Supporting gracefully a massy dome
Of sombre[864] foliage, seem to imitate