Thou sacred nymph! whose pious care
Pours from thine urn this mineral rill,
Whose healing draughts, like crystal fair,
In pleasing murmurs here distil.
Who guid'st the stream, and joy'st to dwell,
Where murmurs soft with use agree;
May Phoebus haunt this hallow'd well,
And all his Sisters learn of thee.
William Shenstone
http://www.poemhunter.com/poem/inscription-for-a-medicinal-fountain-at-the-leasowes/