“Ah, I also was thinking of that,” he said. “Well, Catrine Gordon left Brora, and never arrived here. That is fact. Now for what remains. Have you any remembrance of a woman always alone walking about the moor by the loch? I think I once called your attention to her.”

“Yes, I remember,” I said. “Not Catrine, surely; a very old woman, awful to look at. Moustache, whiskers, and muttering to herself. Always looking at the ground, too.”

“Yes, that is she—not Catrine. Catrine! My word, a May morning! But the other—it is Mrs Macpherson, reputed witch. Well, Sandy trudges there, a mile and more away, every night to see her. You know Sandy: Adonis of the north. Now, can you account by any natural explanation for that fact? That he goes off after a long day to see an old hag in the hills?”

“It would seem unlikely,” said I.

“Unlikely! Well, yes, unlikely.”

Hugh got up from his chair and crossed the room to where a bookcase of rather fusty-looking volumes stood between windows. He took a small morocco-backed book from a top shelf.

“Superstitions of Sutherlandshire,” he said, as he handed it to me. “Turn to page 128, and read.”

I obeyed, and read.

“September 15 appears to have been the date of what we may call this devil festival. On the night of that day the powers of darkness held pre-eminent dominion, and over-rode for any who were abroad that night and invoked their aid, the protective Providence of Almighty God. Witches, therefore, above all, were peculiarly potent. On this night any witch could entice to herself the heart and the love of any young man who consulted her on matters of philtre or love charm, with the result that on any night in succeeding years of the same date, he, though he was lawfully affianced and wedded, would for that night be hers. If, however, he should call on the name of God through any sudden grace of the Spirit, her charm would be of no avail. On this night, too, all witches had the power by certain dreadful incantations and indescribable profanities, to raise from the dead those who had committed suicide.”

“Top of the next page,” said Hugh. “Leave out this next paragraph; it does not bear on this last.”