"Let's go to bed."

"Uh, yes. Meade?"

"Yes, Potty?"

"We may be here quite a while. You know that, don't you?"

"Yes, Potty."

"In fact it might be smart to stay put until those curves all start turning up again. They will, you know."

"Yes. I had figured that out."

He hesitated, then went on, "Meade . . . will you marry me?"

"Yes." She moved up to him.

After a time he pushed her gently away and said, "My dear, my very dear, uh-we could drive down and find a minister in some little town?"

She looked at him steadily. "That wouldn't be very bright, would it? I mean, n.o.body knows we're here and that's the way we want it. And besides, your car might not make it back up that road."

"No, it wouldn't be very bright. But I want to do the right thing."

"It's all right. Potty. It's all right all right."

"Well, then . . . kneel down here with me. Well say them together."

"Yes, Potiphar." She knelt and he took her hand. He closed his eyes and prayed wordlessly.

When he opened them he said, "What's the matter?"

"Uh, the gravel hurts my knees."

"Well stand up, then."

"No. Look, Potty, why don't we just go in the house and say them there?"

"Hub? h.e.l.ls bells, woman, we might forget to say them entirely. Now repeat after me: I, Potiphar, take thee, Meade-"

"Yes, Potiphar. I, Meade, take thee, Potiphar-"

III.

"OFFICIAL: STATIONS WITHIN RANGE RELAY TWICE. EXECUTIVE BULLETIN NUMBER NINE-ROAD LAWS PREVIOUSLY PUBLISHED HAVE BEEN IGNORED IN MANY INSTANCES. PATBOLS ARE ORDERED TO SHOOT WITHOUT WARNING AND PROVOST MARSHALS ABE DIBECTED TO USE DEATH PENALTY FOR UNAUTHORIZED POSSESSION OF GASOLINE. B.W. AND RADIATION QUARANTINE REGULATIONS PREVIOUSLY ISSUED WILL BE RIGIDLY ENFORCED. LONG LIVE THE UNITED STATES! HARLEY J. NEAL, LIEUTENANT GENERAL, ACTING CHIEF OF GOVERNMENT. ALL STATIONS RELAY TWICE."

"THIS IS THE FREE RADIO AMERICA RELAY NETWOBK. Pa.s.s THIS ALONG, BOYS! GOVERNOR BRANDLEY WAS SWORN IN TODAY AS PRESIDENT BY ACTING CHIEF JUSTICE ROBERTS UNDER THE RULE-OF-SUCCESSION. THE PRESIDENT NAMED THOMAS DEWEY AS SECRETARY OF STATE AND PAUL DOUGLAS AS SECRETARY OF DEFENSE. HIS SECOND OFFICIAL ACT WAS TO STRIP THE RENEGADE NEAL OF RANK AND TO DIRECT HIS ARREST BY ANY CITIZEN OR OFFICIAL. MORE LATER. Pa.s.s THE WORD ALONG.

"h.e.l.lO, CQ, CQ, CQ. THIS IS W5KMR, FREEPORT, QRR, QRR! ANYBODY READ ME? ANYBODY? WE'RE DYING LIKE FLIES DOWN HERE. WHAT'S HAPPENED? STARTS WITH FEVER AND A BURNING THIRST BUT YOU CAN'T SWALLOW. WE NEED HELP. ANYBODY BEAD ME? h.e.l.lO, CQ 75, CQ 75 THIS IS W5 KILO METRO ROMEO CALLING QRR AND CQ 75. BY FOR SOMEBODY. ... ANYBODY!!!".

"THIS IS THE LORD'S TIME, SPONSORED BY SWAN'S ELIXIR, THE TONIC THAT MAKES WAITING FOR THE KINGDOM OF G.o.d WORTHWHILE. YOU ARE ABOUT TO HEAR A MESSAGE OF CHEER FROM JUDGE BROOMFIELD, ANOINTED VICAR OF THE KINGDOM ON EABTH. BUT FIRST A BULLETIN: SEND YOUR CONTRIBUTIONS TO 'MESSIAH,' CLINT, TEXAS. DON'T TRY TO MAIL THEM: SEND THEM BY A KINGDOM MESSENGER OR BY SOME PILGRIM JOURNEYING THIS WAY. AND NOW THE TABERNACLE CHOIR FOLLOWED BY THE VOICE OF THE VICAR ON EARTH-"

"-THE FIRST SYMPTOM IS LITTLE RED SPOTS IN THE ARMPITS. THEY ITCH. PUT 'EM TO BED AT ONCE AND KEEP 'EM COVERED UP WARM. THEN GO SCRUB YOUBSELF AND WEAR A MASK: WE DON'T KNOW YET HOW YOU CATCH IT. Pa.s.s IT ALONG, ED."

"-NO NEW LANDINGS REPORTED ANYWHERE ON THIS CONTINENT. THE PARATROOPERS WHO ESCAPED THE ORIGINAL SLAUGHTER ARE THOUGHT TO BE HIDING OUT IN THE POCONOS. SHOOT-BUT BE CAREFUL; IT MIGHT BE AUNT TESSIE. OFF AND CLEAR, UNTIL NOON TOMORROW-"

The curves were turning up again. There was no longer doubt in Breen's mind about that. It might not even be necessary to stay up here in the Sierra Madres through the winter-though he rather thought they would. He had picked their spot to keep them west of the fallout; it would be silly to be mowed down by the tail of a dying epidemic, or be shot by a nervous vigilante, when a few months' wait would take care of everything.

Besides, lie had chopped all that firewood. He looked at his calloused hands-he had done all that work and, by George, he was going to enjoy the benefits!

He was headed out to the hogback to wait for sunset and do an hour's reading; he glanced at his car as he pa.s.sed it, thinking that he would like to try the radio. He suppressed the yen; two thirds of his reserve gasoline was gone already just from keeping the battery charged for the radio-and here it was only December. He really ought to cut it down to twice a week. But it meant a lot to catch the noon bulletin of Free America and then twiddle the dial a few minutes to see what else he could pick up.

But for the past three days Free America had not been on the air-solar static maybe, or perhaps just a power failure. But that rumor that President Brandley had been a.s.sa.s.sinated-while it hadn't come from the Free radio . . . and it hadn't been denied by them, either, which was a good sign. Still, it worried him.

And that other story that lost Atlantis had pushed up during the quake period and that the Azores were now a little continent-almost certainly a hang-over of the "silly season" but it would be nice to hear a follow-up.

Rather sheepishly he let his feet carry him to the car. It wasn't fair to listen when Meade wasn't around. He warmed it up, slowly spun the dial, once around and back. Not a peep at full gain, nothing but a terrible amount of static. Served him right.

He climbed the hogback, sat down on the bench he had dragged up there-their "memorial bench," sacred to the memory of the time Meade had hurt her knees on the gravel-sat down and sighed. His lean belly was stuffed with venison and corn fritters; he lacked only tobacco to make him completely happy. The evening cloud colors were spectacularly beautiful and the weather was extremely balmy for December; both, he thought, caused by volcanic dust, with perhaps an a.s.sist from atom bombs.

Surprising how fast things went to pieces when they started to skid! And surprising how quickly they were going back together, judging by the signs. A curve reaches trough and then starts right back up. World War III was the shortest big war on record-forty cities gone, counting Moscow and the other slave cities as well as the American ones-and then whoosh! whoosh! neither side fit to fight. Of course, the fact that both sides had thrown their ICBMs over the pole through the most freakish arctic weather since Peary invented the place had a lot to do with it, he supposed. It was amazing that any of the Russian paratroop transports had gotten through at all. neither side fit to fight. Of course, the fact that both sides had thrown their ICBMs over the pole through the most freakish arctic weather since Peary invented the place had a lot to do with it, he supposed. It was amazing that any of the Russian paratroop transports had gotten through at all.

He sighed and pulled the November 1951 copy of the Western Astronomer Western Astronomer out of his pocket. Where was he? Oh, yes, out of his pocket. Where was he? Oh, yes, Some Notes on the Stability of G-Type Stars with Especial Reference to Sol Some Notes on the Stability of G-Type Stars with Especial Reference to Sol, by A. G. M. Dynkowski, Lenin Inst.i.tute, translated by Heinrich Ley, F. R. A. S. Good boy, Ski-sound mathematician. Very clever application of harmonic series and tightly reasoned. He started to thumb for his place when he noticed a footnote that he had missed. Dynkowski's own name carried down to it: "This monograph was denounced by Pravda Pravda as romantic reactionariism shortly after it was published. Professor Dynkowski has been unreported since and must be presumed to be liquidated," as romantic reactionariism shortly after it was published. Professor Dynkowski has been unreported since and must be presumed to be liquidated,"

The poor geek! Well, he probably would have been atomized by now anyway, along with the goons who did him in. He wondered if they really had gotten all the Russki paratroopers? Well, he had killed his quota; if he hadn't gotten that doe within a quarter mile of the cabin and headed right back, Meade would have had a bad time. He had shot them in the back, the swine! and buried them beyond the woodpile-and then it had seemed a shame to skin and eat an innocent deer while those lice got decent burial. Aside from mathematics, just two things worth doing-kill a man and love a woman. He had done both; he was rich.

He settled down to some solid pleasure. Dynkowski was a treat. Of course, it was old stuff that a G-type star, such as the sun, was potentially unstable; a G-O star could explode, slide right off the Russell diagram, and end up as a white dwarf. But no one before Dynkowski had defined the exact conditions for such a catastrophe, nor had anyone else devised mathematical means of diagnosing the instability and describing its progress.

He looked up to rest his eyes from the fine print and saw that the sun was obscured by a thin low cloud-one of those unusual conditions where the filtering effect is just right to permit a man to view the sun clearly with the naked eye. Probably volcanic dust in the air, he decided, acting almost like smoked gla.s.s.

He looked again. Either he had spots before his eyes or that was one fancy big sun spot. He had heard of being able to see them with the naked eye, but it had never happened to him. He longed for a telescope.

He blinked. Yep, it was still there, upper right. A big big spot-no wonder the car radio sounded like a Hitler speech. He turned back and continued on to the end of the article, being anxious to finish before the light failed. At first his mood was sheerest intellectual pleasure at the man's tight mathematical reasoning. A 3% imbalance in the solar constant-yes, that was standard stuff; the sun would nova with that much change. But Dynkowski went further; by means of a novel mathematical operator which he had dubbed "yokes" he bracketed the period in a star's history when this could happen and tied it down further with secondary, tertiary, and quaternary yokes, showing exactly the time of highest probability. Beautiful! Dynkowski even a.s.signed dates to the extreme limit of his primary yoke, as a good statistician should. spot-no wonder the car radio sounded like a Hitler speech. He turned back and continued on to the end of the article, being anxious to finish before the light failed. At first his mood was sheerest intellectual pleasure at the man's tight mathematical reasoning. A 3% imbalance in the solar constant-yes, that was standard stuff; the sun would nova with that much change. But Dynkowski went further; by means of a novel mathematical operator which he had dubbed "yokes" he bracketed the period in a star's history when this could happen and tied it down further with secondary, tertiary, and quaternary yokes, showing exactly the time of highest probability. Beautiful! Dynkowski even a.s.signed dates to the extreme limit of his primary yoke, as a good statistician should.

But, as he went back and reviewed the equations, his mood changed from intellectual to personal. Dynkowski was not talking about just any G-O star; in the latter part he meant old Sol himself, Breen's personal sun, the big boy out there with the oversized freckle on his face.

That was one h.e.l.l of a big freckle! It was a hole you could chuck Jupiter into and not make a splash. He could see it very clearly now.

Everybody talks about "when the stars grow old and the sun grows cold"-but it's an impersonal concept, like one's own death. Breen started thinking about it very personally. How long would it take, from the instant the imbalance was triggered until the expanding wave front engulfed earth? The mechanics couldn't be solved without a calculator even though they were implicit in the equations in front of him. Half an hour, for a horseback guess, from incitement until the earth went phutt! phutt!

It hit him with gentle melancholy. No more? Never again? Colorado on a cool morning . . . the Boston Post road with autumn wood smoke tanging the air . . . Bucks county bursting in the spring. The wet smells of the Fulton Fish Market-no, that was gone already. Coffee at the Morning Call. No more wild strawberries on a hillside in Jersey, hot and sweet as lips. Dawn in the South Pacific with the light airs cool velvet under your shirt and never a sound but the chuckling of the water against the sides of the old rust bucket-what was her name? That was a long time ago-the S. S. Mary Brewster S. S. Mary Brewster.

No more moon if the earth was gone. Stars-but no one to look at them.

He looked back at the dates bracketing Dynkowski's probability yoke. "Thine Alabaster Cities gleam, undimmed by-"

He suddenly felt the need for Meade and stood up.

She was coming out to meet him. "h.e.l.lo, Potty! Safe to come in now-I've finished the dishes."

"I should help."

"You do the man's work; I'll do the woman's work. That's fair." She shaded her eyes. "What a sunset! We ought to have volcanoes blowing their tops every year."

"Sit down and we'll watch it."

She sat beside him and he took her hand. "Notice the sun spot? You can see it with your naked eye."

She stared. "Is that a sun spot? It looks as if somebody had taken a bite out of it."

He squinted his eyes at it again. d.a.m.ned if it didn't look bigger!

Meade shivered. "I'm chilly. Put your arm around me."

He did so with his free arm, continuing to hold hands with the other. It was bigger-the thing was growing.

What good is the race of man? Monkeys, he thought, monkeys with a spot of poetry in them, cluttering and wasting a second-string planet near a third-string star. But sometimes they finish in style.

She snuggled to him. "Keep me warm."

"It will be warmer soon. I mean I'll keep you warm."

"Dear Potty."

She looked up. "Potty-something funny is happening to the sunset."

"No darling-to the sun."

"I'm frightened."

"I'm here, dear."

He glanced down at the journal, still open beside him. He did not need to add up the two figures and divide by two to reach the answer. Instead he clutched fiercely at her hand, knowing with an unexpected and overpowering burst of sorrow that this was The End

By His Bootstraps

Bob Wilson did not see the circle grow.

Nor, for that matter, did he see the stranger who stepped out of the circle and stood staring at the back of Wilson's neck-stared, and breathed heavily, as if laboring under strong and unusual emotion.

Wilson had no reason to suspect that anyone else was in his room; he had every reason to expect the contrary. He had locked himself in his room for the purpose of completing his thesis in one sustained drive. He had had to-tomorrow was the last day for submission, yesterday the thesis had been no more than a t.i.tle: "An Investigation Into Certain Mathematical Aspects of a Rigor of Metaphysics." to-tomorrow was the last day for submission, yesterday the thesis had been no more than a t.i.tle: "An Investigation Into Certain Mathematical Aspects of a Rigor of Metaphysics."

Fifty-two cigarettes, four pots of coffee and thirteen hours of continuous work had added seven thousand words to the t.i.tle. As to the validity of his thesis he was far too groggy to give a d.a.m.n. Get it done, was his only thought, get it done, turn it in, take three stiff drinks and sleep for a week.

He glanced up and let his eyes rest on his wardrobe door, behind which he had cached a gin bottle, nearly full. No, he admonished himself, one more drink and you'll never finish it, Bob, old son.

The stranger behind him said nothing.

Wilson resumed typing. "-nor is it valid to a.s.sume that a conceivable proposition is necessarily a possible proposition, even when it is possible to formulate mathematics which describes the proposition with exactness.

A case in point is the concept 'time travel.' Time travel may be imagined and its necessities may be formulated under any and all theories of time, formulae which resolve the paradoxes of each theory. Nevertheless, we know certain things about the empirical nature of time which preclude the possibility of the conceivable proposition. Duration is an attribute of consciousness and not of the plenum. It has no Ding an Sich. Ding an Sich. Therefore-" Therefore-"

A key of the typewriter stuck, three more jammed up on top of it. Wilson swore dully and reached forward to straighten out the cantankerous machinery. "Don't bother with it," he heard a voice say. "It's a lot of utter hogwash anyhow."

Wilson sat up with a jerk, then turned his head slowly around. He fervently hoped that there was someone behind him. Otherwise- He perceived the stranger with relief. "Thank G.o.d," he said to himself.

"For a moment I thought I had come unstuck." His relief turned to extreme annoyance. "What the devil are you doing in my room?" he demanded. He shoved back his chair, got up and strode over to the one door. It was still locked, and bolted on the inside.

The windows were no help; they were adjacent to his desk and three stories above a busy street. "How did did you get in?" he added. you get in?" he added.

"Through that," answered the stranger, hooking a thumb toward the circle. Wilson noticed it for the first time, blinked his eyes and looked again. There it hung between them and the wall, a great disk of nothing, of the color one sees when the eyes are shut tight.