thought the explanation lay in some geological warp, volcanic activity, subterranean gas-vents....

My vision reached a half-mile, no farther. As I went on, the misty horizon receded. The valley was larger than I had imagined. It was like Elysium, where the shades of dead men stroll in the Garden of Proserpine. Streamlets ran through the blue moss at intervals, chill as death from the snowy plains hidden in the fog. "A sleepy world of streams...."

The ruins altered in appearance as I went on. The red blocks were still present, but there were now also remnants of other structures, made by a different culture, I thought.

The blue trees grew more numerous. Leafy vines covered most of them now, saffron-tinted, making each strange tree a little room, screened by the lattice of the vines. As I passed close to one a faint clicking sounded, incongruously like the tapping of typewriter keys, but muffled. I saw movement and turned, my hand going to the pistol in my belt.

The Thing came out of a tree-hut and halted, watching me. I felt it watching me—though it had no eyes!

It was a sphere of what seemed to be translucent plastic, glowing with shifting rainbow colors. And I sensed sentience—intelligence—in its horribly human attitude of watchful hesitation. Four feet in diameter it was, and featureless save for three ivory elastic tentacles that supported it and a fringe of long, whip-like cilia about its diameter—its waist, I thought.

It looked at me, eyeless and cryptic. The shifting colors crawled over the plastic globe. Then it began to roll forward on the three supporting tentacles with a queer, swift gliding motion. I stepped back, jerking out my gun and leveling it.

"Stop," I said, my voice shrill. "Stop!"

It stopped, quite as though it understood my words or the gesture of menace. The cilia fluttered about its spherical body. Bands of lambent color flashed. I could not rid myself of the curious certainty, that it was trying to communicate with me.

Abruptly it came forward again purposefully. I tensed and stepped back, holding the gun aimed. My finger was tightening on the trigger when the Thing stopped.

I backed off, nervously tense, but the creature did not follow. After I had got about fifty yards away it turned back and retreated into the hut-like structure in the banyan tree. After that I 

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