Half by instinct, he realised that he was not in his own tent. True, he might have awaked there from a nightmare to a world equally black; yet he knew this was not so. There was no camp cot beneath him — he had no hands to feel the blankets and canvas surface and flashlight that ought to be around him — there was no sensation of cold in the air — no flap through which he could glimpse the pale night outside . . . something was wrong, dreadfully wrong.
He cast his mind backward and thought of the fluorescent cube which had hypnotised him — of that, and all which had followed. He had known that his mind was going, yet had been unable to draw back. At the last moment there had been a shocking, panic fear — a subconscious fear beyond even that caused by the sensation of daemonic flight. It had come from some vague flash or remote recollection — just what, he could not at once tell. Some cell-group in the back of his head had seemed to find a cloudily familiar quality in the cube — and that familiarity was fraught with dim terror. Now he tried to remember what the familiarity and the terror were.
Little by little it came to him. Once — long ago, in connection with his geological life-work — he had read of something like that cube. It had to do with those debatable and disquieting clay fragments called the Eltdown Shards, dug up from pre-carboniferous strata in southern England thirty years before. Their shape and markings were so queer that a few scholars hinted at artificiality, and made wild conjectures about them and their origin. They came, clearly, from a time when no human beings could exist on the globe — but their contours and figurings were damnably puzzling. That was how they got their name.
It was not, however, in the writings of any sober scientist that Campbell had seen that reference to a crystal, disc-holding globe. The source was far less reputable, and infinitely more vivid. About 1912 a deeply learned Sussex clergyman of occultist leanings — the Reverend Arthur Brooke Winters-Hall — had professed to identify the markings on the Eltdown Shards with some of the so-called “pre-human hieroglyphs” persistently cherished and esoterically handed down in certain mystical circles, and had published at his own expense what purported to be a “translation” of the primal and baffling “inscriptions” — a “translation” still quoted frequently and seriously by occult writers. In this “translation” — a surprisingly long brochure in view of the limited number of “shards” existing — had occurred the narrative, supposedly of pre-human authorship, containing the now frightening reference.
As the story went, there dwelt on a world — and eventually on countless other worlds — of outer space a mighty order of worm-like beings whose attainments and whose control of nature surpassed anything within the range of terrestrial imagination. They had mastered the art of interstellar travel early in their career, and had peopled every habitable planet in their own galaxy — killing off the races they found.
Beyond the limits of their own galaxy — which was not ours — they could not navigate in person; but in their quest for knowledge of all space and time they discovered a means of spanning certain transgalactic gulfs with their minds. They devised peculiar objects — strangely energized cubes of a curious crystal containing hypnotic talismen and enclosed in space-resisting spherical envelopes of an unknown substance — which could be forcibly expelled beyond the limits of their universe, and which would respond to the attraction of cool solid matter only.
These, of which a few would necessarily land on various inhabited worlds in outside universes, formed the ether-bridges needed for mental communication. Atmospheric friction burned away the protecting envelope, leaving the cube exposed and subject to discovery by the intelligent minds of the world where it fell. By its very nature, the cube would attract and rivet attention. This, when coupled with the action of light, was sufficient to set its special properties working.
The mind that noticed the cube would be drawn into it by the power of the disc, and would be sent on a thread of obscure energy to the place whence the disc had come — the remote world of the worm-like space-explorers across stupendous galactic abysses. Received in one of the machines to which each cube was attuned, the captured mind would remain suspended without body or senses until examined by one of the dominant race. Then it would, by an obscure process of interchange, be pumped of all its contents. The investigator’s mind would now occupy the strange machine while the captive mind occupied the interrogator’s worm-like body. Then, in another interchange, the interrogator’s mind would leap across boundless space to the captive’s vacant and unconscious body on the trans-galactic world — animating the alien tenement as best it might, and exploring the alien world in the guise of one of its denizens.