Looking Glass River by Robert Louis Stevenson

Smooth it slides upon its travel,
Here a wimple, there a gleam—
O the clean gravel!
O the smooth stream!

Sailing blossoms, silver fishes,
Paven pools as clear as air—
How a child wishes
To live down there!

We can see our coloured faces
Floating on the shaken pool
Down in cool places,
Dim and very cool;

Till a wind or water wrinkle,
Dipping marten, plumping trout,
Spreads in a twinkle
And blots all out.
 
See the rings pursue each other;
All below grows black as night,
Just as if mother
Had blown out the light!

Patience, children, just a minute—
See spreading circles die;
The stream and all in it
Will clear by-and-by.