“Twice. ... I take it that the situation is a common one.”

“For men of Earth, an invariable one. Awake, you can make yourself walk with due regard for the Moon’s gravity. Asleep, you toss as you would on Earth. But at least falling is not painful at low gravity.”

“The second time, I slept on the floor awhile before waking. Didn’t remember falling. What the hell do you do about it?”

“You mustn’t neglect your periodic checks on heartbeat, blood pressure, and so on, just to make sure the gravity change isn’t introducing too much of a strain.”

I’ve been amply warned of that,” said Denison with distaste. “ln fact, I have fixed appointments for the next month. And pills.”

“Well,” said Neville, as if dismissing a triviality, “within a week you’ll probably have no trouble at all. ... And you’ll need proper clothing. Those trousers will never do and that flimsy upper garment serves no purpose.”

“I presume there’s some place I can buy clothes.”

“Of course. If you can get her when she’s off duty, Selene will be glad to help, I’m sure. She assures me you’re a decent sort, Doctor.”

“I’m delighted she thinks so.” Denison, having swallowed a spoonful of the soup, looked at it as though he were wondering what to do with the rest. Grimly, he continued the task of downing it.

“She judged you to be a physicist, but of course she’s wrong.”

“I was trained as a radiochemist.”

“You haven’t worked at that either for a long time, Doctor. We may be out of it up here, but we’re not that far out of it. You’re one of Hallam’s victims.”

“Are there so many you speak of them as a group?”

“Why not? The whole Moon is one of Hallam’s victims.”

“The Moon?”

“In a manner of speaking.”

“I don’t understand.”

“We have no Electron Pump Stations on the Moon. None have been established because there has been no cooperation from the para-Universe. No samples of tungsten have been accepted.”

“Surely, Dr. Neville, you don’t intend to imply that this is Hallam’s doing.”

“In a negative way, yes. Why must it be only the para-Universe which can initiate a Pump Station. Why not ourselves?”

“As far as I know, we lack the knowledge to take the initiative.”

“And we will continue to lack the knowledge if research into the matter is forbidden.”

“Is it forbidden?” Denison asked, with a faint note of surprise.

“In effect. If none of the work necessary to expand knowledge in that direction finds adequate priorities at the proton synchrotron or at any of the other large equipment —all controlled by Earth and all under the influence of Hallam—then the research is effectively forbidden.”

Denison rubbed his eyes. “I suspect I will have to sleep again before long. ... I beg your pardon. I did not mean to imply you were boring me. But tell me, is the Electron Pump so important to the Moon? Surely the Solar batteries are effective and sufficient.”

“They tie us to the Sun, Doctor. They tie us to the surface.”

“Well— But why does Hallam take this adverse interest in the matter, do you suppose, Dr. Neville?”

“You know better than I, if you know him personally, as I do not. He prefers not to make it clear to the public generally that the entire Electron Pump establishment is the product of the para-men, with ourselves merely servants of the masters. And if, on the Moon, we advance to the point where we ourselves know what we are doing, then the birth of the true Electron Pump technology will date from our moment, not from his.”

Denison said, “Why do you tell me all this?”

“To avoid wasting my time. Ordinarily, we welcome physicists from Earth. We feel cut off here on the Moon, victims of deliberate Terrestrial policy against us, and a physicist-visitor can be helpful, even if only to give us a feeling of lesser isolation. A physicist-immigrant is even more helpful and we like to explain the situation to him and encourage him to work with us. I am sorry that you are not, after all, a physicist.”

Denison said, impatiently, “But I never said I was.”

“And yet you asked to see the synchrotron. Why?”

“Is that really what’s bothering you? My dear sir, let me try to explain. My scientific career was ruined half a lifetime ago. I, have decided to see some sort of rehabilitation, some sort of renewed meaning, to my life as far away from Hallam as I could get—which means here on the Moon. I was trained as a radiochemist, but that has not permanently paralyzed me as far as any other field of endeavor is concerned. Para-physics is the great field of today and I have done my best to self-educate myself there, feeling that this will offer me my best hope for rehabilitation.”

Neville nodded. “I see,” he said with clear dubiousness.

“By the way, since you mentioned the Electron Pump— Have you heard anything about the theories of Peter Lamont?”

Neville eyed the other narrowly. “No. I don’t think I know the man.”

“Yes, he is not yet famous. And probably never will be; chiefly for the same reason I’ll never be. He crossed Hallam, ... His name came up recently and I’ve been giving him some thought. It was one way of occupying the sleepless portion of last night.” And he yawned.

Neville said, impatiently, “Yes, Doctor? What of this man? What is his name?”

“Peter Lamont. He has some interesting thoughts on para-theory. He believes that with continued use of the Pump, the strong nuclear interaction will grow basically more intense in the space of the Solar system and that the Sun will slowly heat up and, at some crucial point, undergo a phase-change that will produce an explosion.”

“Nonsense! Do you know the amount of change produced, on a cosmic scale, of any use of the Pump on a human scale? Even granted that you are only self-educated in physics, you ought have no difficulty in seeing that the Pump can’t possibly make any appreciable change in general Universal conditions during the lifetime of the Solar system.”

“Do you think so?”

“Of course. Don’t you?” said Neville.

“I’m not sure. Lament’s grinding a personal axe. I’ve met him briefly and he impressed me as an intense and very emotional fellow. Considering what Hallam has done to him, he is probably driven by overwhelming anger.”

Neville frowned. He said, “Are you sure he is on the outs with Hallam?”

“I’m an expert on the subject.”

“It doesn’t occur to you that the initiation of that kind of doubt—that the Pump is dangerous—might be used as but another device to keep the Moon from developing Stations of its own?”

“At the cost of creating universal alarm and despondency? Of course not. That would be cracking walnuts with nuclear explosions. No, I’m sure Lament is sincere. In fact, in my own bumbling way, I had similar notions once.”

“Because you, too, are driven by hate for Hallam.”

“I’m not Lamont. I imagine I don’t react the same way he does. In fact, I had some dim hope I would be able to investigate the matter on the Moon, without Hallam’s interference and without Lament’s emotionalism.”

“Here on the Moon?”

“Here on the Moon. I thought perhaps I might get the use of the synchrotron.”

“And that was your interest in it?”

Denison nodded.

Neville said, “You really think you will get the use of the synchrotron? Do you know how far back the requisitions have piled up?”

“I thought perhaps I might get the cooperation of some of the Lunar scientists.”

Neville laughed and shook his head. “We have almost as little chance as you.... However, I’ll tell you what we can do. We have established laboratories of our own. We can give you space; we might even have some minor instrumentation for you. How useful our facilities would be to you, I can’t say, but you might be able to do something.”

“Do you suppose I would have any means there of making observations useful to para-theory?”