Though he could still recall nothing of the past night, he recognised, as soon as he stepped from the cave and went down by the sea-marge, the head-land of Craig-Ruaidh and that of Craig-Geal just behind him. His one wish was to hide, so that none should see him. His fantasy led him to seek remote places, and to fear the face of his fellows.

Turning toward the sun, he looked scrutinisingly along the coast. Somewhere beyond Craig-Geal, he remembered vaguely, there was another hollow which led to a series of intricate and unexplored caves, perilous places of evil repute among the islanders.

If he were to go there ... but at that moment his wandering gaze lighted upon an object moving black in the shine of the sea.

Was it a whale sunning itself, or a pollack moving idly after the liath? Then he saw that it was a boat—one of many torn from moorings or swept from the beach by the recent gale.

So methodical were his actions, that none seeing him would believe his mind was so darkly veiled, that his reason was only partially in exercise.

Having taken off his coat, he wrapped it round a heavy stone and threw the bundle far into the sea. Then he thrust his boots into a cranny in a fissured boulder that at full flood was covered.

A few seconds later he was in the water, swimming swiftly toward the derelict.

While he neared the boat, amid a sheen of sparkling foam as he urged his way through the sun-dazzle which lay upon that part of the sea, he broke intermittently into a mournful Gaelic chant, but with words so incoherent, and with interjections so wild and strange, that the fishermen on a coble, hid in the mist a few fathoms away, believed they listened to a sea-kelpie, or to that vague object of their profoundest dread known as "the thing that hides beneath the boat." They were southward bound; but at that forlorn wailing they hauled down their flapping sail, and, with their oars, made all haste northerly to their island or mainland haven. Not a man among them would have persevered in that voyage on that day.

Alastair heard the sound of the oar-wash, and ceased his fitful chant. It must, he thought, be dead seamen rowing to and fro, looking for the newly drowned to take their places as warders of the treasures and keepers of the secrets which lie among the weed-tangle and sunless caverns of the deep. At the thought, he laughed loud, but mirthlessly; and the echo of his laughter, falling against the ears of the fishermen, added to their horror and consternation.

With his hands gripping the gunwale, he swayed for some time to and fro, fascinated by the lustrous green beneath the keel—green in the sunlit spaces as leaves of the lime in April, and in the lower as emerald lapsing into jade, and then as jade passing into the gloom of pines at dusk.