"'John,' I cried, stepping back several paces, 'John, don't!'
"But Cabot never heard me. His hand went up with the heavy hammer.
"Poor John! Nothing warned him—nothing stayed him!
"The blow came down. I heard the tinkling crash; then
"'Oh my God!'
"It was Cabot's voice in a shrill scream of unutterable horror and agony. His bent figure straightened up, and from his hair and his outflung arms blue lights crackled and streamed, and all around his body a column of something shimmered and shifted and grew. So for a moment he postured; then he began to dance. I tell you he began to dance, not by any force or power that resided in his own limbs, but as if he were jerked or writhed about by an external agent. I saw what that agent was. It was the black spot! Out of the ground it rose like an evil jinnee and took on the form and shape of something monstrous, inhuman, horrible. It leapt and whirled; and yes, though I couldn't hear it, it sang and shouted. It was the nucleus of an increasing body of light. I felt searing heat scorch my cheeks and burn my throat with every breath I drew. More! I felt that streaming fingers of light were reaching out at me, clutching.
"With a sob of fear I turned and ran. Cabot's horse had broken loose and was running wildly across the plains. My own was plunging madly at the end of its picket rope. Somehow I mounted and fled, but after several miles of such flight my horse put its hoof in a prairie-dog hole and broke its leg, pitching me over its head.
"How long I lay dead to the world I don't know; but the long shadows were running eastward when I came to. The air was acrid and bitter. With fearful eyes I saw that the day was unaccountably dark and that the pillar of fire out on the plains had grown to immense proportions. Even as I gazed on it, it grew. Hour after hour it grew, adding to its circumference and height. From the four corners of the horizon, in mighty arches that dipped to a common center, flowed infinitesimal particles of what seemed golden dust. I know now that all the electricity was being sucked out of the air, darkening the day, blackening the night, and rendering all machinery useless. But then I knew only that the pillar of fire, the center to which those particles cohered, was drawing nearer and nearer to where I lay. For I could barely move, my feet seemed like lead, and there was a tight band round my chest.
"Perhaps I was delirious, out of my head; I do not know, but I got on my feet and walked and walked, and when I couldn't walk I crawled. Hours and hours I crawled, driven ahead by a growing horror of the nightmare that pursued me; yet when I stopped, exhausted, I was still far away from the foothills and the pillar of fire was nearer than ever. I could see the monstrous black thing inside of it dancing and whirling. My God! It was reaching out dark streamers of fire after me; it was calling out that it wanted me, that it would have me, that nothing this side of heaven or hell could keep it from me; and as it shot this implacable message into my senses, it grew bigger, it danced faster, and it came closer.
"Again I staggered to my feet and ran. Late night found me several
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