and an assumption of superiority that would bring inevitable conflict with the aborigines of Earth. Judging by the actions of the white race on Earth, if the newcomers were merely explorers it could mean the coming doom of humanity's independence. If they were invaders....

Something like this would be pointed out soon after the news itself. Some people would react with total despair, expecting the strangers to act like men. Some might hope that a superior race would have developed a kindliness and altruism that on Earth are rather rare. But there was no one at all who would not be apprehensive. Some would panic.

Burke's reaction was strictly personal. Nobody else in the world would have felt the same appalled, stunned emotion he felt when he heard the sounds from space. Because to him they were familiar sounds.

He paced up and down in the big, partitionless building in which the actual work of Burke Development, Inc., was done. He'd done some reasonably good work in this place. The prototype of the hydroponic wall for Interiors, Inc., still stood against one wall. It was crude, but he'd made it work and then built a production model which had now been shipped off complete. A little to one side was a prototype of a special machine which stamped out small parts for American Tool. That had been a tricky assignment! There were plastic and glass-wool and such oddments with which he'd done a process-design job for Holmes Yachts, and a box of small parts left over from the designing job that gave one aviation company the only practical small-plane retractable landing-gear.

These things had a queer meaning for him now. He'd devised the wanted products. He'd developed certain needed processes. But now he began to be deeply suspicious of his own successes. Each was a new reason for uneasiness.

He grimly questioned whether his highly peculiar obsession had not been planted in him against the time when fluting noises would come from that illimitable void beyond Earth's atmosphere.

He examined, for the thousandth time, his special linkage with the space noises. In previous soul-searchings he'd pinpointed the time when the whole business began. He'd been eleven years old. He could even work out something close to an exact date. He was living with his aunt and uncle, his own parents being dead. His uncle had made a business trip to Europe, alone, and had brought back souvenirs which were fascinating to eleven-year-old Joe Burke. There was a flint knife, and a carved ivory object which his uncle assured him was mammoth ivory. It had a deer's head incised into it. There were some fragments of pottery and a dull-surfaced black cube. They appealed to the small boy because his uncle said they'd belonged to men who lived when mammoths roamed the Earth and cave men hunted the now-extinct huge beasts. Cro-Magnons, his uncle said, had owned the objects. He'd bought them from a French peasant who'd found a cave with pictures on its walls that dated back twenty thousand years. The French government had taken over the cave, but before reporting it the peasant had thriftily hidden away some small treasures to sell for himself. Burke's uncle bought them and, in time, presented them to the local museum. All but the black cube, which Burke had dropped. It had shattered into a million tissue-thin, shiny plates, which his aunt insisted on sweeping out. He'd tried to keep one of the plates, but his aunt had found it under his pillow and disposed of it.

He remembered the matter solely because he'd examined his memories so often, trying to find something relevant to account for the beginning of his recurrent dream. Somewhere shortly after his uncle's visit he had had a dream. Like all dreams, it was not complete. It made no sense. But it wasn't a normal dream for an eleven-year-old boy.

He was in a place where the sun had just set, but there were two moons in the sky. One was large and motionless. The other was small and moved swiftly across the heavens. From behind him came fluting signals like the messages that would later come from space. In the dream he was full-grown and he saw trees with extraordinary, ribbony leaves like no trees on Earth. They wavered and shivered in a gentle breeze, but he ignored them as he did the fluting sounds behind him.

He was searching desperately for someone. A child knows terror for himself, but not for anybody else. But Burke, then aged eleven, dreamed that he was in an agony of fear for someone else. To breathe was torment. He held a weapon ready in his hand. He was prepared to do battle with any imaginable creature for the person he needed to find. And suddenly he saw a figure running behind the waving foliage. The relief was almost greater pain than the terror had been. It was a kind and amount of emotion that an eleven-year-old boy simply could not know, but Burke experienced it. He gave a great shout, and bounded forward toward her—and the dream ended.

He dreamed it three nights running, then it stopped, for awhile.

Then, a week later, he had the dream again, repeated in every detail. He had it a dozen times before he was twelve, and as many more before he was thirteen. It recurred at random intervals all through his teens, while he was in college, and after. When he grew up he found out that recurrent dreams are by no means unusual. But this was very far from a usual dream.

From time to time, he observed new details in the dream. He knew that he was dreaming. His actions and his emotion did not vary, but he was able to survey them—like the way one can take note of items in a book one reads while quite absorbed in it. He came to notice the way the trees sent their roots out over the surface of the ground before dropping suckers down into it. He noticed a mass of masonry off to the left. He discovered that a hill in the distance was not a natural hill. He was able to remember markings on the large, stationary moon in the sky, and to realize that the smaller one was jagged and irregular in shape. The dream did not change, but his knowledge of the place of the dream increased.

As he grew older, he was startled to realize that though the trees, for example, were not real, they were consistent with reality. The weapon he held in his hand was especially disturbing. Its grip and barrel were transparent plastic, and in the barrel there was a sequence of peculiarly-shaped forms, in and about which wire had been wound. As a grown man he'd made such shapes in metal, once. He'd tried them out as magnets in a job for American Tool. But they weren't magnets. They were something specific and alarming instead. He also came to know exactly what the mass of masonry was, and it was a sober engineering feat. No boy of eleven could have imagined it.

And always there were the flutelike musical sounds coming from behind him. When he was twenty-five he'd memorized them. He'd heard them—dreamed them—hundreds of times. He tried to duplicate them on a flute and devised a special mute to get exactly the tone quality he remembered so well. He made a recording to study, but the study was futile.

In a way, it was unwholesome to be so much obsessed by a dream. In a way, the dream was magnificently irrelevant to messages transmitted through millions of miles of emptiness. But the flutelike sounds linked it—now—to reality! He paced up and down in the empty, resonant building and muttered, "I ought to talk to the space-exploration people."

Then he laughed. That was ironical. All the crackpots in the world would be besieging all the authorities who might be concerned with the sounds from space, impassionedly informing them what Julius Caesar, or Chief Sitting Bull, or some other departed shade, had told them about the matter via automatic writing or Ouija boards. Those who did not claim ghostly authority would explain that they had special talents, or a marvelous invention, or that they were members of the race which had sent the messages the satellite-tracking stations received.

No. It would serve no purpose to inform the Academy of