Explain the appropriateness of the sound devices used in lines 25 and 17, in relation to the subject and mood. But, oh! that deep romantic chasm which slanted

Down the green hill athwart a cedarn cover!

A savage place! as holy and enchanted

As e'er beneath a waning moon was haunted 15

By woman wailing for her demon-lover

And from this chasm, with ceaseless turmoil seething,

As if this earth in fast, thick pants were breathing,

A mighty fountain momently was forced;

Amid whose swift, half-intermitted burst 20

Huge fragments vaulted like rebounding hail,

Or chaffy grain beneath the thresher's flail;

And 'mid these dancing rocks at once and ever

It flung up momently the sacred river.

Five miles meandering with a mazy motion 25

Through wood and dale the sacred river ran,

Then reached the caverns measureless to man,