That forest was, but sweet with pleasant shade:

XVIII
Forward he passed, mid in the grove before
He heard a sound that strange, sweet, pleasing was;
There rolled a crystal brook with gentle roar,
There sighed the winds as through the leaves they pass,
There did the nightingale her wrongs deplore,
There sung the swan, and singing died, alas!
There lute, harp, cittern, human voice he heard,
And all these sounds one sound right well declared.

XIX
A dreadful thunder-clap at last he heard,
The aged trees and plants well-nigh that rent;
Yet heard the nymphs and sirens afterward,
Birds, winds, and waters, sing with sweet consent:
Whereat amazed he stayed, and well prepared
For his defence, heedful and slow forth went:
Nor in his way his passage aught withstood,
Except a quiet, still, transparent flood.

XX
On the green banks which that fair stream inbound,
Flowers and odors sweetly smiled and smelled,
Which reaching out his stretched arms around,
All the large desert in his bosom held,
And through the grove one channel passage found;
That in the wood; in that, the forest dwelled:
Trees clad the streams; streams green those trees aye made
And so exchanged their moisture and their shade.

XXI
The knight some way sought out the flood to pass,
And as he sought, a wondrous bridge appeared,
A bridge of gold, a huge and weighty mass,
On arches great of that rich metal reared;
When through that golden way he entered was,
Down fell the bridge, swelled the stream, and weared
The work away, nor sign left where it stood,
And of a river calm became a flood.

XXII
He turned, amazed to see it troubled so,
Like sudden brooks increased with molten snow,
The billows fierce that tossed to and fro,
The whirlpools sucked down to their bosoms low;
But on he went to search for wonders mo,
Through the thick trees there high and broad which grow,
And in that forest huge and desert wide,
The more he sought, more wonders still he spied.

XXIII
Whereso he stepped, it seemed the joyful ground
Renewed the verdure of her flowery weed,
A fountain here, a wellspring there he found;
Here bud the roses, there the lilies spread
The aged wood o'er and about him round
Flourished with blossoms new, new leaves, new seed,
And on the boughs and branches of those treen,
The bark was softened, and renewed the green.

XXIV
The mann