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.