But there were no serious signs of radiation burns in either. Blood counts were normal and a study of the hair roots revealed nothing. The nausea that developed was eventually tabbed as psychosomatic and no other symptoms appeared.

Nor, in all the Institute, was anyone found, either then or in the future, to explain why a crucible of crude uranium, well below critical size, and under no direct neutronic bombardment, should suddenly melt and radiate that deadly and significant corona.

The only conclusion was that nuclear physics had queer and dangerous crannies left in it.

Yet Dr. Smith never brought himself to tell all the truth in the report he eventually prepared. He made no mention of the holes in the laboratory, no mention of the fact that the one nearest the spot where the crucible had been was barely visible, the one on the other side of the thermostat was a trace larger, while the one in the wall, three times as far away from that fearful spot, could have had a nail thrust through it.

A beam expanding in a straight line could travel several miles before the Earth's curvature made the surface fall away from it sufficiently to prevent further damage, and then it would be ten feet across. After that, flashing emptily into space, expanding and weakening, a queer strain in the fabric of the cosmos.

He never told anyone of that fancy.

He never told anyone that he called for the morning papers next day, while still in the infirmary, and searched the columns with a definite purpose in mind.

But so many people in a giant metropolis disappear every day. And nobody had gone screaming to the police with vague tales of how, before his eyes, a man (or would it be half a man?) had disappeared. At least no such case was reported.

Dr. Smith forced forgetfulness, eventually.

To Joseph Schwartz it had happened between one step and the next. He had lifted his right foot to clear the Raggedy Ann doll and for a moment he had felt dizzy-as though for the merest trifle of time a whirlwind had lifted him and turned him inside out. When he placed his right foot down again, all the breath went out of him in a gasp and he felt himself slowly crumple and slide down to the grass.

He waited a long time with his eyes closed-and then he opened them.

It was true! He was sitting on grass, where previously he had been walking on concrete.

The houses were gone/ The white houses, each with its lawn, squatting there, row on row, all goner

And it was not a lawn he was sitting on, for the grass was growing rank, untended, and there were trees about, many of them, with more on the horizon.

That was when the worst shock of all came, because the leaves on those trees were ruddy, some of them, and in the curve of his hand he felt the dry brittleness of a dead leaf. He was a city man, but he knew autumn when he saw it.

Autumn! Yet when he had lifted his right foot it had been a June day, with everything a fresh and glistening green.

He looked toward his feet automatically as he thought that and, with a sharp cry, reached toward them…The little cloth doll that he had stepped over, a little breath of reality, a- Well, no! He turned it over in his trembling hands, and it was not whole. Yet it was not mangled; it was sliced. Now wasn't that queer! Sliced lengthwise very neatly, so that the waste-yarn stuffing wasn't stirred a hair. It lay there in interrupted threads, ending flatly.

The glitter on his left shoe caught Schwartz's eye. Still clutching the doll, he forced his foot over his raised knee. The extreme tip of the sole, the part that extended forward past the uppers, was smoothly sliced off. Sliced off as no earthly knife in the hand of an earthly cobbler could have duplicated. The fresh surface gleamed almost liquidly in its unbelievable smoothness.

Schwartz's confusion had reached up from his spinal cord and touched the cerebrum, where it finally froze him with horror.

At last, because even the sound of his own voice was a soothing element in a world otherwise completely mad, he spoke aloud. The voice he heard was low and tense and panting.

He said, "In the first place, I'm not crazy. I feel inside just the way I've always felt…Of course, if maybe I were crazy, I wouldn't know it, or would I? No-" Inside, he felt the hysteria rise and forced it down. "There must be something else possible."

He considered, " A dream, maybe? How can I tell if it's a dream or not?" He pinched himself and felt the nip, but shook his head. "I can always dream I feel a pinch. That's no proof."

He looked about him despairingly. Could dreams be so clear, so detailed, so lasting? He had read once that most dreams last not more than five seconds, that they are induced by trifling disturbances to the sleeper, that the apparent length of the dreams is an illusion.

Cold comfort! He shifted the cuff of his shirt upward and stared at his wrist watch. The second hand turned and turned and turned. If it were a dream, the five seconds was going to stretch madly.

He looked away and wiped futilely at the cold dampness of his forehead. "What about amnesia?"

He did not answer himself, but slowly buried his head in both hands.

If he had lifted his foot and, as he did so, his mind had slipped the well-worn and well-oiled tracks it had followed so faithfully for so long…If three months later, in the autumn, or a year and three months later, or ten years and three months later, he had put his foot down in this strange place, just as his mind returned…Why, it would seem a single step, and all this…Then where had he been and what had he done in the interval?

"No!" The word came out in a loud cry. That couldn't be! Schwartz looked at his shirt. It was the one he had put on that morning, or what should have been that morning, and it was a fresh shirt. He bethought himself, plunged a fist: into his jacket pocket, and brought out an apple.

He bit into it wildly. It was fresh and still had a lingering coolness from the refrigerator which had held it two hours earlier-or what should have been two hours.

And the little rag doll, what about that?

He felt himself beginning to go wild. It had to be a dream. or he really was insane.

It struck him that the time of day had changed. It was late afternoon, or at least the shadows were lengthening. The quiet desolation of the place flooded down upon him suddenly and freezingly.

He lurched to his feet. Obviously he would have to find people, any people. And, as obviously, he would have to find a house, and the best way to do that would be to find a road.

Automatically he turned in the direction in which the trees seemed thinnest, and walked.

The slight chill of evening was creeping inside his jacket and the tops of the trees were becoming dim and forbidding when he came upon that straight and impersonal streak of macadam. He lunged toward it with sobbing gratitude and loved the feel of the hardness beneath his feet.

But along either direction was absolute emptiness, and for a moment he felt the cold clutch again. He had hoped for cars. It would have been the easiest thing to wave them down and say-he said it aloud in his eagerness-"Going toward Chicago, maybe?"

What if he was nowhere near Chicago? Well, any large city; anyplace he could reach a telephone line. He had only four dollars and twenty-seven cents in his pocket, but there was always the police…

He was walking along the highway, walking along the middle, watching in both directions. The setting of the sun made no impression upon him, or the fact that the first stars were coming out.

No cars. Nothing' And it was getting to be really dark.

He thought that first dizziness might be coming back, because the horizon at his left glimmered. Through the gaps in the trees there was a cold blue shine. It was not the leaping red he imagined a forest fire would be like, but a faint and creeping glow. And the macadam beneath his feet seemed to sparkle ever so faintly. He bent down to touch it, and it felt normal. But there was that tiny glimmer that caught the edges of his eyes.