The tide came up fast, and as the waves heaved and swayed and ran in, it seemed as if they were sweeping before them myriads and myriads of stars, for the water was covered with light, some being the reflections from the sky, others the curious little specks that we used to see in the water in warm weather.
We sat and talked and lay close to the edge to watch the waves come sweeping in more and more, till the little bay was covered and the tide rose over the outlying rock, the water sounding wild and strange as it washed, and splashed, and sighed, and sucked in amongst the stones.
Then, by slow degrees, as we gazed down we found how necessary it had been for us to climb up to our perch, for the tide rose and rose, higher and higher, till it must have been seven or eight feet up the rocks below us; and now it was that we listened with a peculiar creeping sensation to the swell, as it rolled in and evidently right up into the caves which we had seen.
"Why, those places must go a long way into the cliffs," said my father as we listened.

"Hark at that." It was a curious creepy sound of hissing and roaring, as if there were strange wild beasts right in amongst the windings of the cave, and they had become angry with the sea for intruding in their domain.
"Seals!" said Bob Chowne decisively.
"No," said my father, "it is only the imprisoned air escaping from some of the cracks and crevices into which it is driven by the sea.

Why, boys, those caves must be very large, or at all events they go in a long way.

You ought to explore them some day at low water.

Warm enough ?" We all declared that we were, and sat gazing out at the soft transparent darkness overhanging the sea, which was wonderfully smooth now, in spite of the soft western breeze that was blowing; and at last the silence seemed to have become perfectly profound.