He lost some time making a wide detour in the afternoon around a fair-sized herd of buffalo. He camped that night in another grove, having stopped an hour or so earlier beside a stream to catch another supply of fish with his shirt-and-staff seine. In the grove he found a few bushes of dewberries, with some fruit still on them, so he had dessert as well as fish.
The sun came up and he moved on again. The sun descended.
And another day began and he went on. And another and another.
He caught fish. He found berries. He found a deer that had been freshly killed, no doubt by some animal that his appearance had scared off. Hacking away with his pocket knife, he cut as many ragged hunks of venison as he could carry. Even without salt, the meat was a welcome change from fish. He even learned to eat a little of it raw, hacking off a mouthful and chewing it methodically as he walked along. He had to discard the last of the meat when it got so high that be couldn't live with it.
He lost track of time. He had no idea how many miles he had covered, now how far he might be from the place where he was heading, nor even if he could find it at all.
His shoes broke open and he stuffed them with dried grass and bound them together with strips cut off his trouser legs.
One day he knelt to drink at a pool and in the glass-clear water saw a strange face staring back at him. With a shock he realized that it was his own face, that of a bearded man, ragged and dirty and with the lines of fatigue upon him.
The days came and went. He moved ahead, northwestward. He kept putting first one foot out and then the other, moving almost automatically. The sun burned him at first and the burn turned to a tan. He crossed a wide, deep river on a log. It took a long time to get across and once the log almost spun and spilled him, but he made it.
He kept going on. There was nothing else to do.
He walked through an empty land, with no sign of habitation, although it was a land that was well suited for human occupation. The soil was rich and the grass grew tall and thick and the trees, which sprang skyward from groves along the watercourses, were straight and towered high into the sky.
Then one day, just before sunset, he topped a rise and saw the land fall away beneath his feet, sweeping downward toward the far-off ribbon of a river that he thought he recognized.
But it was not the river which held his attention, but the flash of setting sun on metal, on a large area of metal far down the sloping land.
He put up his hand and shielded his eyes against the sunlight and tried to make out what it was, but it was too far far away and it shone too brightly.
Climbing down the slope, not knowing whether to be glad or frightened, Vickers kept a close watch on the gleam of far-off metal. At times he lost sight of it when he dipped into the swales, but it was always there when he topped the rise again, so he knew that it was real.
Finally he was able to make out that what he saw were buildings — metallic buildings glinting in the sun, and now he saw that strange shapes came and went in the air above them and that there was a stir of life around them.
But it was not a city or a town. For one thing, it was too metallic. And for another, there were no roads leading into it.
As he came nearer, he made out more and more of the detail of the place and finally, when he was only a mile or two away, he stopped and looked at it and knew what it was.
It was not a city, but a factory, a giant, sprawling factory and to it came, continually, the strange flying things that probably were planes, but looked more like flying boxcars. The most of them came from the north and west and they came flying low, not too fast, dipping down to land in an area behind a screen of buildings that stood between him and the landing field.
And the creatures that moved about among the buildings were not men — or did not seem to be men, but something else, metallic things that flashed in the last rays of the sun.
All about the buildings, standing on great towers, were cup-shaped discs many feet across and all the faces of the discs were turned toward the sun and the faces of the discs glowed as if there were fires inside of them.
He walked slowly toward the buildings and as he came closer to them he realized for the first time the sheer vastness of them. They covered acre after acre and they towered for many stories high and the things that ran among them on their strange and many errands were not men, nor anything like men, but self-propelled machines.
Some of the machines he could identify, but most of them he couldn't. He saw a carrying machine rush past with a load of lumber clutched within its belly and a great crane lumbered past at thirty miles an hour with its steel jaws swinging. But there were others that looked like mechanistic nightmares and all of them went scurrying about, as if each of them were in a terrific hurry.
He found a street, or if not a street, an open space between two buildings, and went along it, keeping close to the side of one of the buildings, for it would have been what one's life was worth to walk down the center, where the machines might run one down.
He came to an opening in the building, from which a ramp led out to the street, and he cautiously climbed the ramp and looked inside. The interior was lighted, although he could not see where the light came from, and he looked down long avenues of machinery, busily at work. But there was no noise — that, he knew now, was the thing that bothered him. Here was a factory and there was no noise. The place was utterly silent except for the sound of metal on the earth as the self-propelled machines flashed along the Street.
He left the ramp and went down the street, hugging the building, and came out on the edge of the airfield where the aerial boxcars were landing and taking off.
He watched the machines land and disgorge their freight, great piles of shining, newly-sawed lumber, which was at once snatched up by the carrying machines and hustled off in all directions; great gouts of raw ore, more than likely iron, dumped into the maw of other carrying machines that looked, or so Vickers thought, like so many pelicans.
Once the boxcar had unloaded it took off again — took off without a single sound, as if a wind had seized and wafted it into the upper air.
The flying things came in endless streams, disgorging their endless round of cargo, which was taken care of almost immediately. Nothing was left piled up. By the time the machine had lifted into the air, the cargo it had carried had been rushed off somewhere.
Like men, thought Vickers — those machines act just like men. Their operation was not automatic, for to have been automatic each operation must have been performed at a certain place and at a regular time — and each ship did not land in exactly the same place, nor was the time of their arrival spaced regularly. But each time that a ship landed the appropriate carrying machine would be on hand to take charge of the cargo.
Like intelligent beings, Vickers thought, and even as he thought of it, he knew that that was exactly what they were.
Here, he knew, were robots, each one designed to take care of its own particular task. Not the man-like robots of one's imagination, but practical machines with intelligence and purpose.
The sun had set and as he stood at the corner of the building he looked up at the towers which had faced the sun. The discs atop the towers, he saw, were slowly turning back toward east, so that when the sun came up next morning they would be facing it.
Solar power, thought Vickers — and where else had he heard of solar power? Why, in the mutant houses! The dapper little salesman had explained to him and Ann how, when you had solar plant, you could dispense with public utilities.
And here again was solar power. Here, too, were frictionless machines that ran without the faintest noise. Like the Forever car that would not wear out, but would last through many generations.