"An', by the faith and the honour of the O'Keefes, an' by my dead mother's soul may God do with me as I do by her!" he whispered fervently.

He relapsed into open-eyed dreaming.

I walked about the room, examining it—the first opportunity I had gained to inspect carefully any of the rooms in the abode of the Three. It was octagonal, carpeted with the thick rugs that seemed almost as though woven of soft mineral wool, faintly shimmering, palest blue. I paced its diagonal; it was fifty yards; the ceiling was arched, and either of pale rose metal or metallic covering; it collected the light from the high, slitted windows, and shed it, diffused, through the room.

Around the octagon ran a low gallery not two feet from the floor, balustraded with slender pillars, close set; broken at opposite curtained entrances over which hung thick, dull-gold curtainings giving the same suggestion of metallic or mineral substance as the rugs. Set within each of the eight sides, above the balcony, were colossal slabs of lapis lazuli, inset with graceful but unplaceable designs in scarlet and sapphire blue.

There was the great divan on which mused Larry; two smaller ones, half a dozen low seats and chairs carved apparently of ivory and of dull soft gold.

Most curious were tripods, strong, pikelike legs of golden metal four feet high, holding small circles of the lapis with intaglios of one curious symbol somewhat resembling the ideographs of the Chinese.

There was no dust—nowhere in these caverned spaces had I found this constant companion of ours in the world overhead. My eyes caught a sparkle from a corner. Pursuing it I found upon one of the low seats a flat, clear crystal oval, remarkably like a lens. I took it and stepped up on the balcony. Standing on tiptoe I found I commanded from the bottom of a window slit a view of the bridge approach. Scanning it I could see no trace of the garrison there, nor of the green spear flashes. I placed the crystal to my eyes—and with a disconcerting abruptness the cavern mouth leaped before me, apparently not a hundred feet away; decidedly the crystal was a very excellent lens—but where were the guards?

I peered closely. Nothing! But now against the aperture I saw a score or more of tiny, dancing sparks. An optical illusion, I thought, and turned the crystal in another direction. There were no sparklings there. I turned it back again—and there they were. And what were they like? Realization came to me—they were like the little, dancing, radiant atoms that had played for a time about the emptiness where had stood Sorgar of the Lower Waters before he had been shaken into the nothingness! And that green light I had noticed—the Keth!

A cry on my lips, I turned to Larry—and the cry died as the heavy curtainings at the entrance on my right undulated, parted as though a body had slipped through, shook and parted again and again—with the dreadful passing of unseen things!

"Larry!" I cried. "Here! Quick!"