Turnbull smiled slightly. "Aren"t you afraid that the police will trace this to you?"
"Oh, I"m sure they would eventually," said Rawlings, "but you"ll be free to make any explanations long before that time."
"I see," Turnbull said flatly. "Mind operation. Is that what you did to Scholar Duckworth?"
The expression on Scholar Rawling"s face was so utterly different from what Turnbull had expected that he found himself suddenly correcting his thinking in a kaleidoscopic readjustment of his mind.
"What did you think you were on to, Dr. Turnbull?" the old man asked slowly.
Turnbull started to answer, but, at that moment the door opened.
The round, pleasant-faced gentleman who came in needed no introduction to Turnbull.
Scholar Duckworth said: "h.e.l.lo, Dave. Sorry I wasn"t here when you woke up, but I got--" He stopped. "What"s the matter?"
"I"m just cursing myself for being a fool," Turnbull said sheepishly. "I was using your disappearance as a datum in a problem that didn"t require it."
Scholar Rawlings laughed abruptly. "Then you thought--"
Duckworth chuckled and raised a hand to interrupt Rawlings. "Just a moment, Jason; let him logic it out to us."
"First take these straps off," said Turnbull. "I"m stiff enough as it is, after being out cold for three days."
Rawlings touched a b.u.t.ton on the wall, and the restraining straps vanished. Turnbull sat up creakily, rubbing his arms.
"Well?" said Duckworth.
Turnbull looked up at the older man. "It was those first two letters of yours that started me off."
"I was afraid of that," Duckworth said wryly. "I ... ah ... tried to get them back before I left Earth, but, failing that, I sent you a letter to try to throw you off the track."
"Did you think it would?" Turnbull asked.
"I wasn"t sure," Duckworth admitted. "I decided that if you had what it takes to see through it, you"d deserve to know the truth."
"I think I know it already."
"I dare say you do," Duckworth admitted. "But tell us first why you jumped to the wrong conclusion."
Turnbull nodded. "As I said, your letters got me worrying. I knew you must be on to something or you wouldn"t have been so positive. So I started checking on all the data about the City--especially that which had come in just previous to the time you sent the letters.
"I found that several new artifacts had been discovered in Sector Nine of the City--in the part they call the Bank Buildings. That struck a chord in my memory, so I looked back over the previous records. That Sector was supposed to have been cleaned out nearly ninety years ago.
"The error I made was in thinking that you had been forcibly abducted somehow--that you had been forced to write that third letter. It certainly looked like it, since I couldn"t see any reason for you to hide anything from me.
"I didn"t think you"d be in on anything as underhanded as this looked, so I a.s.sumed that you were acting against your will."
Scholar Rawlings smiled. "But you thought I was capable of underhanded tactics? That"s not very flattering, young man."
Turnbull grinned. "I thought you were capable of kidnaping a man. Was I wrong?"
Rawlings laughed heartily. "_Touche._ Go on."
"Since artifacts had been found in a part of the City from which they had previously been removed, I thought that Jim, here, had found a ... well, a cover-up. It looked as though some of the alien machines were being moved around in order to conceal the fact that someone was keeping something hidden. Like, for instance, a new weapon, or a device that would give a man more power than he should rightfully have."
"Such as?" Duckworth asked.
"Such as invisibility, or a cheap method of trans.m.u.tation, or even a new and faster s.p.a.ce drive. I wasn"t sure, but it certainly looked like it might be something of that sort."
Rawlings nodded thoughtfully. "A very good intuition, considering the fact that you had a bit of erroneous data."
"Exactly. I thought that Rawlings Scientific Corporation--or else you, personally--were concealing something from the rest of us and from the Advisory Board. I thought that Scholar Duckworth had found out about it and that he"d been kidnaped to hush him up. It certainly looked that way."
"I must admit it did, at that," Duckworth said. "But tell me--how does it look now?"
Turnbull frowned. "The picture"s all switched around now. You came here for a purpose--to check up on your own data. Tell me, is everything here on the level?"
Duckworth paused before he answered. "Everything _human_," he said slowly.
"That"s what I thought," said Turnbull. "If the human factor is eliminated--at least partially--from the data, the intuition comes through quite clearly. We"re being fed information."
Duckworth nodded silently.
Rawlings said: "That"s it. Someone or something is adding new material to the City. It"s like some sort of cosmic bird-feeding station that has to be refilled every so often."
Turnbull looked down at his big hands. "It never was a trade route focus," he said. "It isn"t even a city, in our sense of the term, no more than a birdhouse is a nest." He looked up. "That city was built for only one purpose--to give human beings certain data. And it"s evidently data that we need in a hurry, for our own good."
"How so?" Rawlings asked, a look of faint surprise on his face.
"Same a.n.a.logy. Why does anyone feed birds? Two reasons--either to study and watch them, or to be kind to them. You feed birds in the winter because they might die if they didn"t get enough food."
"Maybe we"re being studied and watched, then," said Duckworth, probingly.
"Possibly. But we won"t know for a long time--if ever."
Duckworth grinned. "Right. I"ve seen this City. I"ve looked it over carefully in the past few months. Whatever ent.i.ties built it are so far ahead of us that we can"t even imagine what it will take to find out anything about them. We are as incapable of understanding them as a bird is incapable of understanding us."
"Who knows about this?" Turnbull asked suddenly.
"The entire Advanced Study Board at least," said Rawlings. "We don"t know how many others. But so far as we know everyone who has been able to recognize what is really going on at the City has also been able to realize that it is something that the human race _en ma.s.se_ is not yet ready to accept."
"What about the technicians who are actually working there?" asked Turnbull.
Rawlings smiled. "The artifacts are very carefully replaced. The technicians--again, as far as we know--have accepted the evidence of their eyes."