His intercourse with the people of Mlok was carried on through several mediums. After the operations, they could impress telepathic words and images upon his mind. Their other modes of communication, which involved for them less expenditure of energy than pure telepathy, were mastered more gradually by Sarkis. The reflex of thought-pictures, thrown on their bodies as on a screen, became intelligible to him; and the sound-vibration of their arabesque feelers, which served them in lieu of vocal cords, was now fully articulate, with its higher notes perceivable as a graduated tactile pressure.
He learned that his hosts, who called themselves the Mloki after their planet, were an old and highly developed race for whom the marvels of scientific masterdom had become secondary to the delights of pure perception and reflection. Mlok, they told him, was the third planet of a binary solar system in a galaxy so remote, astronomically speaking, that its light had never reached the earth.
The manner in which they had visited the earth and had taken Sarkis to their own world was indeed strange, and involved the use of an arcanic force, which, by projecting itself through the fifth dimension, could exist simultaneously in opposite corners of the universe. The apparatus of coppery-looking bars and meshes which had descended upon Sarkis was composed of this force. How it was controlled and manipulated, he never quite understood, apart from the fact that it was closely obedient to a certain nervous power possessed by the Mlok.
They had often visited the earth, as well as many other alien planets, through curiosity. In spite of their divergent sense-development, they had acquired a surprising knowledge of terrene conditions. Two of them, whose names were Nlaa and Nluu, had found Sarkis on Spanish Mountain, and had perceived telepathically his dissatisfaction with mundane life. Being sympathetic in their way, and also curious concerning the result of such an experiment, they had invited him to accompany them on their return to Mlok.
The real events of Sarkis’ life among the Mloki were his new and wonderful sensations. The outward happenings were all very simple, for the existence of this people, apart from their excursions to remote worlds, was almost wholly contemplative.
For his food and drink, they supplied him with many fruits and vegetable juices. The Mloki themselves drew their nourishment directly from the air and light; and their topless towers were designed to collect and focus all the solar rays, the absorption of which was to them a rare, Epicurean pleasure. To a limited extent, the alteration of Sarkis’ nerves had given him a similar faculty; but he still depended mainly on grosser foods.
One very remarkable feature of the sensory change in Sarkis was the vagueness which attended his impressions of his own body. He seemed to possess a dream-like immateriality, and to drift rather than walk in his movement from place to place.
He spent much of his time in converse with certain of the Mlok especially Nlaa and Nluu, who took a tutelary interest in their protégé, and never wearied of imparting to him their immensely recondite and various knowledge. He acquired undreamt-of conceptions regarding time, space, life, matter and energy, and was also instructed in novel aesthetics and in highly complicated arts which made painting appear a silly and barbarous pastime.
How long he remained in Mlok, he never knew. His instructors, a long-lived people to whom centuries were no more than years, gave little importance to the formal measurement of time. But many of the long, double days and brief, irregular nights had gone by, before a homesickness for the lost earth began to torment him. Amid all the beguilements and novelties of his existence, beneath his altered senses, a nostalgia rose in his brain, which was still, at bottom, the brain of an earth-man.
The feeling came upon him by degrees. His memories of the world he had formerly detested and from which he had longed to escape, took on a haunting charm and poignancy, and were touched with an enchantment such as belongs to early childhood. He recoiled from the sensory opulence of the world about him, and yearned for the simple scenes and faces of the human sphere.
The Mloki, well aware of the growth of this feeling, tried to distract him with new impressions and took him on a tour of their planet. In this tour, they employed a vessel which swam through the thick air like a submarine in some tellurian ocean. Nlaa and Nluu accompanied the earth-man, solicitous, and eager to point out the marvels of each latitude.
The effect however, was merely to aggravate Sarkis’ nostalgia. Peering down on the domeless Karnaks and Babylons of this ultra-cosmic world, he thought of the earth-cities with a craving which, in his quondam aversion for the works of man, he would never have believed possible. Drifting among prodigious mountains, where mundane peaks would have been lost like boulders, he recalled the Sierras with a sick yearning that moved him almost to tears.
After rounding the equator of Mlok, and visiting the iceless poles, the expedition returned to its starting-point, which lay in the tropic realms. Sarkis, now desperately ill and languishing, implored Nlaa and Nluu to send him back by means of the occult force-projector to his own world. They tried to dissuade him, saying that his homesickness was merely a brain-wrought illusion that would wear off in time.
In order to relieve him permanently and speedily from his suffering, they proposed a certain treatment of his brain-cells. By the injection of a rare vegetable serum, they could alter his very memories and mental reactions. These, as well as his sense-impressions, would then approximate those of the Mloki.
Sarkis, though he shrank in a way from the proposed mental transformation, which would have removed him utterly and forever beyond humanity, might well have consented. But certain untoward happenings, wholly unforeseen, were to bring about another eventuation than this.
The planetary system to which Mlok belonged was on the very extreme of its native island universe. In the short intersolar nights, this universe could be seen as a nebulous star-cloud, filling half of the heavens; but the other half was dark and rayless as the Coal Sack familiar to terrene astronomers. It seemed that there were no living stars in the sable gulf, unless at a distance that had not yet permitted their rays to reach the observatories of Mlok.
Nevertheless, there came from this void the first invasion that had ever threatened the security of the two-sunned planet. The first warning of this invasion was a dark cloud—a thing hitherto unknown in Mlok, whose humid element was constant in the thick seas and heavy air, without evaporation or precipitation. The cloud, which had the form of a trapezium, drew down and widened rapidly above the southern zones, doming the sky with intense ebon. It broke on the lands beneath in a rain of black, liquid globules, which acted like a mordant chemical. Flesh, stone, soil, vegetation, everything that was touched by the rain, dissolved instantly, forming tarry pools and rills that soon merged in an ever-spreading sea.
The news of this catastrophe became known immediately all over the planet. The corrosive sea was watched from air-vessels, and every effort was made to curb its inroads. Dykes of atomic energy were built to enclose it; and belts of elemental fire were centered upon the pollution, to burn it away. But all such measures were in vain: the sea like a liquid cancer, ate steadily into the huge planet.
Some of the black fluid was obtained by Mloki who sacrificed their own lives in submitting it to analysis. Even as the element began its ravages upon their bodies, they announced their findings as to its nature. The globules that had fallen from space, they thought, were protoplasmic organisms of an unknown type, which had the power of liquefying all other forms of matter in what was seemingly an illimitable process of assimilation. This process had formed the eroding sea.