"God forbid!" answered Giorsal Macdonald with white lips; "God forbid that we look at the son of Ailean Carmichael askance. But——"

"But what?"

With that the woman put her apron over her head and moved away, muttering strange words.

"Ian, what is this mystery?"

"How am I for knowing, Alan mac Ailean? It is all a darkness to me also. But I will be finding that out soon."

That, however, was easier for Ian to say than to do. Meanwhile, the brown coble tacked back to Borosay, and the fisherman sailed away to the Barra coasts, and Alan and Ian were left solitary in their wild and remote home.

But in that very solitude Alan found healing. From what Giorsal hinted, he came to believe that the fishermen had experienced one of those strange dream-waves which, in remote isles, occur at times, when whole communities will be wrought by the self-same fantasy. When day by day went past, and no one came near, he at first was puzzled, and even resentful; but this passed, and soon he was glad to be alone. Ian, however, knew that there was another cause for the inexplicable aversion that had been shown. But he was silent, and kept a patient watch for the hour that the future held in its shroud. As for Giorsal, she was dumb; but no more looked at Alan askance.

And so the weeks went. Occasionally a fishing smack came with the provisions, for the weekly despatch of which Alan had arranged at Loch Boisdale, and sometimes the Barra men put in at the haven, though they would never stay long, and always avoided Alan as much as was possible.

In that time Alan and Ian came to know and love their strangely beautiful island home. Hours and hours at a time they spent exploring the dim, green, winding sea-galleries, till at last they knew the chief arcades thoroughly.

They had even ventured into some of the narrow, snake-like inner passages, but never for long, because of the awe and dread these held, silent estuaries of the grave.