The Verse of Coleridge’s ‘Christobel’

MARK yon runnel how ’tis flowing,
Like a sylvan spirit dreaming
Of the Spring-blooms near it blowing
And the sunlight in it gleaming!
Where that shelving rock is spied,
There with a smooth warbling slide
It lapses down into a cool
And brimming, not o’erflowing pool.
Then between its narrow’d banks
Playing mellow gurgling pranks,
It gushes till a channel’d stone
Gives it a more strenuous tone;
Or with an under-swirling spread
Over a wide pebbled bed
It bubbles with a gentle pleasure,
Ere some new mood change the measure:
Such a runnel typeth well
The sweet wild verse of ‘Christabel;’
But what
The Wonder-World it warbles through?