"A swirl of mist floated up from its surface. It drifted within the embrace of the rosy beam and hung there for a moment. The beam seemed to embrace it, sending through it little shining corpuscles, tiny rosy spiralings. The mist absorbed the rays, was strengthened by them, gained substance. Another swirl sprang into the amber shaft, clung and fed there, moved swiftly toward the first and mingled with it. And now other swirls arose, here and there, too fast to be counted; hung poised in the embrace of the light streams; flashed and pulsed into each other. "Thicker and thicker still they arose until over the surface of the Pool was a pulsating pillar of opalescent mist steadily growing stronger; drawing within it life from the seven beams falling upon it; drawing to it from below the darting, incandescent atoms of the Pool. Into its centre was passing the luminescence rising from the far depths. And the pillar glowed, throbbed--began to send out questing swirls and tendrils-- "There forming before me was That which had walked with Stanton, which had taken Thora--the thing I had come to find! "My brain sprang into action. My hand threw up the pistol and I fired shot after shot into the shining core. "As I fired, it swayed and shook; gathered again. I slipped a second clip into the automatic and another idea coming to me took careful aim at one of the globes in the roof. From thence I knew came the force that shaped this Dweller in the Pool--from the pouring rays came its strength. If I could destroy them I could check its forming. I fired again and again. If I hit the globes I did no damage. The little motes in their beams danced with the motes in the mist, troubled. That was all. "But up from the Pool like little bells, like tiny bursting bubbles of glass, swarmed the tinkling sounds--their pitch higher, all their sweetness lost, angry. "And out from the Inexplicable swept a shining spiral. "It caught me above the heart; wrapped itself around me. There rushed through me a mingled ecstasy and horror. Every atom of me quivered with delight and shrank with despair. There was nothing loathsome in it. But it was as though the icy soul of evil and the fiery soul of good had stepped together within me. The pistol dropped from my hand. "So I stood while the Pool gleamed and sparkled; the streams of light grew more intense and the radiant Thing that held me gleamed and strengthened. Its shining core had shape--but a shape that my eyes and brain could not define. It was as though a being of another sphere should assume what it might of human semblance, but was not able to conceal that what human eyes saw was but a part of it. It was neither man nor woman; it was unearthly and androgynous. Even as I found its human semblance it changed. And still the mingled rapture and terror held me. Only in a little corner of my brain dwelt something untouched; something that held itself apart and watched. Was it the soul? I have never believed--and yet--