But some of the rest, he told himself, he had sensed—the devoted loyalty and the mindless patience of the creature that tracked another far among the stars. He knew he was right, for the mind of that other thing, that devoted star-dog perched upon the ledge, came into him and fastened on his mind and for a moment the two of them, the two minds, for all their differences, merged into a single mind in a gesture of fellowship and basic understanding, as if for the first time in what must have been millions of years this baying hound from outer space had found a creature that could understand its duty and its purpose.

"We could try to dig it out," said Daniels. "I had thought of that, of course, but I was afraid that it would be injured. And it would be hard to convince anyone—"

"No", said the creature, "digging would not do. There is much you do not understand. But this other proposal that you have, that has great merit. You say you do not have the knowledge of genetics to take this action now. Have you talked to others of your kind?"

"I talked to one," said Daniels, "and he would not listen. He thought I was mad. But he was not, after all, the man I should have spoken to. In time I could talk with others but not right now. No matter how much I might want to—I can't. For they would laugh at me and I could not stand their laughter. But in a hundred years or somewhat less I could—"

"But you will not exist a hundred years", said the faithful dog. "You are a short-lived species. Which might explain your rapid rise. All life here is short-lived and that gives evolution a chance to build intelligence. When I first came here I found but mindless entities."

"You are right," said Daniels. "I can live no hundred years. Even from the very start, I could not live a hundred years, and better than half of my life is gone. Perhaps much more than half of it. For unless I can get out of this cave I will be dead in days."

"Reach out", said the sparkling one. "Reach out and touch me, being."

Slowly Daniels reached out. His hand went through the sparkle and the shine and he had no sense of matter—it was as if he'd moved his hand through nothing but air.

"You see", the creature said, "I cannot help you. There is no way for our energies to interact. I am sorry, friend." (it was not friend, exactly, but it was good enough, and it might have been, Daniels thought, a great deal more than friend.)

"I am sorry, too," said Daniels. "I would like to live."

Silence fell between them, the soft and brooding silence of a snow-laden afternoon with nothing but the trees and the rock and the hidden little life to share the silence with them.

It had been for nothing, then, Daniels told himself, this meeting with a creature from another world. Unless he could somehow get off this ledge there was nothing he could do. Although why he should so concern himself with the rescue of the creature in the stone he could not understand. Surely whether he himself lived or died should be of more importance to him than that his death would foreclose any chance of help to the buried alien.

"But it may not be for nothing," he told the sparkling creature. "Now that you know—"

"My knowing", said the creature, "will have no effect. There are others from the stars who would have the knowledge—but even if I could contact them they would pay no attention to me. My position is too lowly to converse with the greater ones. My only hope would be people of your kind and, if I'm not mistaken, only with yourself. For I catch the edge of thought that you are the only one who really understands. There is no other of your race who could even be aware of me."

Daniels nodded. It was entirely true. No other human existed whose brain had been jumbled so fortunately as to have acquired the abilities he held. He was the only hope for the creature in the stone and even such hope as he represented might be very slight, for before it could be made effective he must find someone who would listen and believe. And that belief must reach across the years to a time when genetic engineering was considerably advanced beyond its present state.

"If you could manage to survive the present this", said the hound from outer space, "I might bring to bear certain energies and techniques—sufficiently for the project to be carried through. But, as you must realize, I cannot supply the means to survive this crisis."

"Someone may come along," said Daniels. "They might hear me if I yelled every now and then."

He began yelling every now and then and received no answer. His yells were muffled by the storm and it was unlikely, he knew, that there would be men abroad at a time like this. They'd be safe beside their fires.

The sparkling creature still perched upon the ledge when Daniels slumped back to rest. The other made an indefinite sort of shape that seemed much like a lopsided Christmas tree standing in the snow.

Daniels told himself not to go to sleep. He must close his eyes only for a moment, then snap them open—he must not let them stay shut for then sleep would come upon him. He should beat his arms across his chest for warmth—but his arms were heavy and did not want to work.

He felt himself sliding prone to the cave floor and fought to drive himself erect. But his will to fight was thin and the rock was comfortable. So comfortable, he thought, that he could afford a moment's rest before forcing himself erect. And the funny thing about it was that the cave floor had turned to mud and water and the sun was shining and he seemed warm again.

He rose with a start and he saw that he was standing in a wide expanse of water no deeper than his ankles, black ooze underfoot.

There was no cave and no hill in which the cave might be. There was simply this vast sheet of water and behind him, less than thirty feet away, the muddy beach of a tiny island—a muddy, rocky island, with smears of sickly green clinging to the rocks.

He was in another time, he knew, but not in another place. Always when he slipped through time he came to rest on exactly the same spot upon the surface of the earth that he had occupied when the change had come.

And standing there he wondered once again, as he had many times before, what strange mechanism operated to shift him bodily in space so that when he was transported to a time other than his own he did not find himself buried under, say, twenty feet of rock or soil or suspended twenty feet above the surface.

But now, he knew, was no time to think or wonder. By a strange quirk of circumstance he was no longer in the cave and it made good sense to get away from where he was as swiftly as he could. For if he stayed standing where he was he might snap back unexpectedly to his present and find himself still huddled in the cave.

He turned clumsily about, his feet tangling in the muddy bottom, and lunged towards the shore. The going was hard but he made it and went up the slimy stretch of muddy beach until he could reach the tumbled rocks and could sit and rest.

His breathing was difficult. He gulped great lungfuls and the air had a strange taste to it, not like normal air.

He sat on the rock, gasping for breath, and gazed out across the sheet of water shining in the high, warm sun. Far out he caught sight of a long, humping swell and watched it coming in. When it reached the shore it washed up the muddy incline almost to his feet. Far out on the glassy surface another swell was forming.

The sheet of water was greater, he realized, than he had first imagined. This was also the first time in his wanderings through the past that he had ever come upon any large body of water. Always before he had emerged on dry land whose general contours had been recognizable—and there had always been the river flowing through the hills.

Here nothing was recognizable. This was a totally different place and there could be no question that he had been projected farther back in time than ever before—back to the day of some great epicontinental sea, back to a time, perhaps, when the atmosphere had far less oxygen than it would have in later eons. More than likely, he thought, he was very close in time to that boundary line where life for a creature such as he would be impossible. Here there apparently was sufficient oxygen, although a man must pump more air into his lungs than he would normally. Go back a few million years and the oxygen might fall to the point where it would be insufficient. Go a little farther back and find no free oxygen at all.