A greenish glimmer hovered below, in a mysterious half light, and seemed to change the damp hole into some hiding-place in the depths of a wood.

They saw each other in a sort of greenish nest bedecked with moss, in the midst of fresh water and foliage.

And all the strangeness of the deep spring, the hollow tower over which they bent, trembling with fascination, added unconfessed and delightful fear to their merry laughter.

The wild idea occurred to them of going down and seating themselves on a row of large stones which formed a kind of circular bench at a few inches above the water.

They would dip their feet in the latter, converse there for hours, and no one would think of coming to look for them in such a spot.