Once you and, the cattle are out of his sight, get around behind him as best you can, and bring him here, preferably alive. I'd like to know how he got here so soon, and so would f.a.gin, I'm sure."

"Are you going to tell him, or the others?"

"Not yet. They'll act more natural if they don't know. Besides, there are still a couple of reports to be given, and f.a.gin never likes that to be interrupted, you know."

"I know he usually doesn't, but this seemed a sort of special case."

"Special or not, let's surprise him with your prisoner. Take axes, by the way; they seemed to impress those folks a lot, and maybe he'll give up more easily."

"All right." John and Betsey pulled up their resting legs and started casually downhill toward the herd.

None of the others appeared to notice them, and Nick did his best to imitate their att.i.tude as the two scouts disappeared from sight.

vii. ACQUISITION; INQUISITION; INSTRUCTION NEITHER Raeker nor his a.s.sistant paid any attention to the departure of John and his companion. They were much too busy operating cameras and recorders, for one reason. Easy and her companion could now watch the group on the surface indirectly, but neither of them was familiar enough with the routine activities of f.a.gin's pupils to notice anything out of the ordinary. Besides, they were paying very close attention to the geographical reports, in the somewhat unreasonable hope of being able to recognize part of the land described.

For the bathyscaphe was now high and dry. The river down which it had been carried had vanished with the coming day, and the ship had rolled rather uncomfortably -though, fortunately, very slowly-to the foot of a hillock which Easy had promptly named Mount Ararat. The children were having a little trouble, since they had not only had their first visual contact with natives, via the observation room of the Vindemiatrix, but also their first look at the solid surface of Tenebra-if one excepts the bottom of a lake and a river. They were covering both scenes as well as they could, one at the windows while the other was at the plate, but each was trying to keep the other filled in verbally on the other part, with confusing results. Their shouted words were coming through to Raeker and the others in the observation room, and were 102.

Acquisition; Inquisition; Instruction 103 adding their little bit to the confusion there. Raeker didn't dare cut them off, partly for reasons of their own morale and partly because it was always possible that the one at the windows would have something material to report. He hoped the recording of the native reports would be intelligible to the geologists.

Jane finished her account, was asked a question or two by Raeker on points he had not fully taken in, and then settled back to let Oliver show his map. Raeker's a.s.sistant photographed it, Raeker himself made sure that the recording tape was still feeding properly, and the two relaxed once more-or came as close to relaxation as the local confusion permitted. Raeker was almost ready to decide that he needn't stay, and to catch up on his over- due sleep.

He had not actually said anything about it, though, when the cave scout caught sight of John. Within three sec- onds after that, the biologist lost all intention of leaving.

The scout reacted practically instantaneously. He had been crouching as low in the vegetation as his anatomy permitted; now he leaped to his walking legs and started traveling. John was south and west of him, f.a.gin and the rest south and east; he headed north. Immediately Betsey rose into view in that direction, and he stopped in momentary confusion. Nick, who had never lost sight of the fellow's crest since Betsey had first pointed him out, interpreted the situation correctly even though he could not see John and Betsey. He sprang to his walking legs, interrupting Oliver unceremoniously, and began issuing orders. The others were surprised, but reacted with relatively little confusion; and within a few seconds the whole group was streaming down the hillside toward the point where the cave dweller had vanished, leaving the human observers to shout futile questions through the speakers of their robot. Seeing that words were useless, Raeker started the robot in the same direction as his pupils, and used language which made Easy raise her eyebrows as the machine 104 CLOSE TO CRITICAL.

was steadily left further and further behind. Nick and his friends disappeared over the hilltop where the scout had been hiding, and not even their shouts could be heard over Raeker's voice in the control room. It was Easy who turned his words into more constructive channels, less because she was shocked than because she was curious.

"Dr. Raeker! Did I hear one of them say that there was a cave dweller to catch? How did one get there so soon? I thought you said you'd left them behind at that river." Her question was so exactly the one Raeker had been asking himself that he had nothing to say in reply for a moment; but at least he stopped talking, and had the grace to turn slightly red.

"That's what it sounded like to me, Easy. I don't know the way they found us any more than you do; I have always supposed this was a long way outside their home grounds, so I don't see how they could have known a short cut around the river-for that matter, I don't see how there could be such a thing; that river was over a mile wide. We'll have to wait until Nick and the others come back; maybe they'll have a prisoner we can question. I suppose that's his idea; I think he said 'catch,' not 'kill.' "

"That's right; he did. Well, we'll be able to see them in a minute or two, when the robot gets up this hill, unless they've gone over another one in the meantime."

It turned out that they hadn't; the human watchers had a very good view of the chase, not that it was much to see. The valley into which the cave scout had fled was almost entirely ringed with the low, rounded hills so typical of much of Tenebra; John and Betsey had managed to get to the tops of two of these before being seen, so that they had a considerable advantage on the cave dweller when it came to running. He had made one or two attempts to race out through the wide gaps between Betsey and John and between them and the main group, but had seen after only a few moments on each dash that he was being Acquisition; Inquisition; Instruction 105 headed off. When the robot came in sight he was standing near the center of the valley while f.a.gin's people closed in slowly around him. He was rather obviously getting ready for a final dash through any gap that might present itself, after his pursuers were close enough to have sacrificed their advantage of elevation. He might also be planning to fight; he was two feet taller than Nick and his friends, and had two efficient-looking short spears.

Nick seemed to have picked up a smattering of military tactics, not to mention diplomacy, however. He halted his people a good fifty yards from the big cave dweller, and spread them out into an evenly s.p.a.ced circle, With this completed to his satisfaction, he shifted to Swift's language.

"Do you think you can get away from us?"

"I don't know, but some of you will be sorry you tried to stop me," was the answer.

"What good will that do you, if you are killed?" The scout seemed unable to find an answer to this; in fact, the very question seemed to startle him. The matter had seemed so obvious that he had never faced the task of putting it into words. He was still trying when Nick went on, "You know that f.a.gin said he was willing to teach Swift whatever he wanted to know. He doesn't want fighting. If you'll put your spears down and come to talk with him, you won't be hurt."

"If your teacher is so willing to help, why did he run away?" the other shot back. Nick had his answer ready.

"Because you had taken him away from us, and we want him to teach us too. When I came to your caves to get him, he came with me to help me get away. He carried me through the river, where I could not have gone alone. When you first attacked our village, he wanted us to talk to you instead of fighting; but you gave us no chance." He fell silent, judging that his antagonist would need time to think. However, another question came at once.

"Will you do anything your Teacher tells you?"

J.UO CLOSE TO CRITICAL.

"Yes." Nick didn't mention the times he had hesitated about obeying f.a.gin's commands; quite honestly, he didn't think of them at that moment.

"Then let me hear him tell you not to harm me. He is coming now. I will wait here, but I will keep my weapons, until I am sure I won't need them."

"But you don't know his language; you won't know what he's telling us."

"He learned a few of our words while he was with us, though he couldn't say them very well. I think I can ask him if he is going to hurt me, and I'll know if he says yes or no." The scout fell silent and stood watching the approach of the robot, still keeping a firm grip on his spears with two hands each. He was ready to stab, not throw.

Even Raeker could see that readiness as the robot glided into the circle, and felt a little uneasy; he would be a good two seconds slow in reacting to anything that happened. Not for the first time, he wished that the Vin-demiatrix were orbiting just outside Tenebra's atmosphere, with three or four relay stations to take care of horizon troubles.

"What's happened, Nick? Is he going to fight?"

"Not if you can convince him it isn't necessary," replied Nick. He went on to give a precis of the scout's recent statements. "I don't quite know what to do with him myself, now that we have him," he finished.

"I wouldn't say you really had him, yet," was Raeker's dry rejoinder, "but I see the problem. If we let him go, Swift will be on us in a matter of hours, or in a day or so at the outside. If we don't, we'll have to keep a continuous watch on him, which would be a nuisance, and he might get away anyway. Killing him would of course be inexcusable."

"Even after what happened to Alice and Tom?"

"Even then, Nick. I think we're going to have to put this fellow to a use, and face the fact that Swift will know where we are. Let me think." The robot fell silent, though Acquisition; Inquisition; Instruction 107 the men controlling it did not; plans were being proposed, discussed, and rejected at a great rate while the natives waited. Easy had not been cut off, but she offered no advice. Even the diplomats, able to hear from the communication room which they still haunted, kept quiet for once.

The cave dweller, of course had been unable to follow the conversation between Nick and the Teacher, and after the first minute or so of silence he asked for a translation. Somehow he managed to make the request in such a way that Nick felt he was repairing an omission rather than granting a favor when he provided the requested information.

"f.a.gin is deciding what is best to do. He says that we must not kill you."

"Have him tell me that himself. I will understand him."

"One does not interrupt the Teacher when he is thinking," replied Nick. The cave dweller seemed impressed; at least, he said nothing more until the robot came back on the air.

"Nick." Raeker's voice boomed into the dense atmosphere, "I want you to translate very carefully what I have to say to this fellow. Make it word for word, as nearly as the language difference will allow; and think it over yourself, because there will be some information I haven't had time to give you yet."

"All right, Teacher." Everyone in the circle switched attention to the robot; but if the scout in the center realized this, he at least made no effort to take advantage of the fact. He, too, listened, as intently as though he were trying to make sense out of the human speech as well as Nick's translation. Raeker started slowly, with plenty of pauses for Nick to do his job.

"You know," he began, "that Swift wanted me at his place so that I could teach him and his people to make fires, and keep herds, and the other things I have already taught my own people. I was willing to do that, but Swift 1US CLOSE TO CRITICAL.

thought, from something Nick said, that my people would object, so he came fighting when it wasn't necessary.

"That's not really important, now, except for the fact that it delayed something important to Swift as well as to us. Up until now, all I've been able to give is knowledge. I was the only one of my people here, and I can never go back where I came from, so that I couldn't get more things to give.

"Now others of my people have come. They are riding in a great thing that they made; you haven't any words for it, since I never gave them to Nick's people and I don't think Swift's people have any such things. It was something we made, as you make a bucket or a spear, which is able to carry us from one place to another; for the place from which I came is so far away that no one could ever walk the distance, and is far above so that only a floater could even go in the right direction. The people who came were going to be able to come and go in this machine, so that they could bring things like better tools to all of you, taking perhaps things you were willing to give in exchange. However, the machine did not work quite properly; it was like a spear with a cracked head. It came down to where you live, but we found that it could not float back up again. My people cannot live outside it, so they aren't able to fix it. We need help from Nick's people and, if you will give it, from yours as well. If you can find this machine in which my friends are caught, and learn from me how to fix it, they will be able to go back up once more and bring things for you all; if you can't or won't, my people will die here, and there will not even be knowledge for you-for some day I will die, too, you know.

"I want you to take this message to Swift, and then, if he will let you, come back with his answer. I would like him and all his people to help hunt for the machine; and when it is found, Swift's people and Nick's can help in Acquisition; Inquisition; Instruction 109 fixing it. There won't need to be any more fighting. Will you do that?"

Nick had given this talk exactly as it came, so far as his knowledge of Swift's language permitted. The scout was silent for half a minute or so at the end. He was still holding his spears firmly, but Raeker felt that his att.i.tude with them was a trifle less aggressive. It may have been wishful thinking, of course; human beings are as p.r.o.ne to believe the things they wish were true as Drommians are to believe what occurs to them first.

Then the scout began asking questions, and Raeker's estimate of his intelligence went up several notches; he had been inclined to dismiss the fellow as a typical savage.

"Since you know what is wrong with your friends and their machine, you must be able to talk to them some way."

"Yes, we-I can talk to them."

"Then how is it you need to look for them? Why can't they tell you where they are?"

"They don't know. They came down to a place they had never seen before, and floated on a lake for five days. Last night they drifted down a river. They were at the bottom, and couldn't see where they were going; and anyway they didn't know the country-as I said, they never saw it before. The river is gone now, and they can see around, but that does no good."

"If you can hear them talk, why can't you go to them anyway? I can find anything I can hear."

"We talk with machines, just as we travel. The machines make a sort of noise which can only be heard by another machine, but which travels very much farther than a voice. Their machine can talk to one in the place where I came from, and then that one can talk to me; but it is so far away that it can't tell exactly where either of us is. All we can do is let them tell us what sort of country they can see; then I can tell you, and you can start hunting."

110 CLOSE TO CRITICAL.

"You don't even know how far away they are, then."

"Not exactly. We're pretty sure it's not very far-not more than two or three days' walk, and probably less.

When you start looking for them we can have them turn on their brightest lights, like these-" the robot's spots flamed briefly-"and you'll be able to see them from a long distance. They'll have some lights on anyway, as a matter of fact."

The cave dweller thought for another minute or so, then shifted the grip on his spears to "trail." "I will give your words to Swift, and if he has words for you they will be brought. Will you stay here?"

The question made Raeker a trifle uneasy, but he saw no alternative to answering "yes." Then another point occurred to him.

"If we did not stay here, would it take you long to find us?" he asked. "We noticed that you got to this side of the river and into sight of our group much more quickly than we had expected. Did you have some means of crossing the river before day?"

"No," the other replied with rather surprising frankness. "The river bends north not far inland from the place where you walked through it and goes in that direction for a good number of miles. A number of us were sent along it, with orders to stop at various points, cross as soon as it dried up, and walk toward the sea to find traces of you."

"Then others presumably crossed our trail-all those who were stationed farther south-and located us."

"No doubt. They may be watching now, or they may have seen you attack me and gone off to tell Swift." "You knew about the bend in the river. Your people are familiar with the country this far from your caves?"

"We have never hunted here. Naturally, anyone can tell which way a river is going to flow and where there are likely to be hills and valleys."

"What my people call an eye for country. I see. Thank Acquisition; Inquisition; Instruction 111 you; you had better go on and give the message to Swift before he arrives with another crowd of spears to avenge the attack on one of his men."

"All right. Will you answer one question for me first? Sometimes you say 'I' and sometimes 'we' even when you obviously don't mean yourself and these people here. Why is that? Is there more than one of you inside that thing?"

Nick did not translate this question; he answered it himself.

"The Teacher has always talked that way," he said. "We've sometimes wondered about it, too; but when we asked him, he didn't explain-just said it wasn't important yet. Maybe Swift can figure it out." Nick saw no harm in what he would have called psychology if he had known the word.

"Maybe." The scout started south without another word, and the rest of the group, who had long since broken their circle and gathered around the teacher, watched him go.

"That sounded good, Dr. Raeker. Should we keep the spot lights on just in case, from now on?" Easy Rich's voice broke the silence.

"I wouldn't, just yet," Raeker said thoughtfully. "I wish I could be sure I wanted Swift to find you, instead of merely wanting to keep him from attacking us,"

"What?" Aminadabarlee's voice was shriller, and much louder, even than usual. "Are you admitting that you are using my son as bait to keep those savages away from your little pet project down there? That you regard those ridiculously shaped natives as more important than a civilized being, simply because you've been training them for a few years? I have heard that human beings were cold-blooded, and scientists even more so than the general run, but I would never have believed this even of human beings. This is the absolute limit. Councillor Rich, I must ask your indulgence for the loan of our speedster; I am going to Dromm and start our own rescue work. I have 112 CLOSE TO CRITICAL.

trusted you men too long. I am through with that-and so is the rest of the galaxy!"

"Excuse me, sir." Raeker had come to have a slightly better grasp of the problem the Drommian represented. "Perhaps, if you do not trust me, you will at least listen to Councillor Rich, whose daughter is in the same situation as your son. He may point out to you that the 'ridiculous natives' whose safety I have in mind are the only beings in the universe in a position, or nearly in a position, to rescue those children; and he may have noticed that I did not tell the savage even the little I heard of Easy and 'Mina's description of the country around them. I am sure we will appreciate your planet's help, but do you think it will possibly come in time? Before the human girl is permanently injured by extra gravity, and your son has exceeded your race's time limit under vitamin and oxygen deficiency? I am not asking these questions to hurt you, but in an effort to get the best help you can give. If there is anything more you can do than keep your son's courage up by staying where he can see and hear you, please let us know."

Rich's face was visible behind the Drommian's in the jury-rigged vision screen, and Raeker saw the human diplomat give a nod and an instantly suppressed smile of approval. He could think of nothing to add to his speech, and wisely remained silent. Before Aminadabarlee found utterance, however, Easy came in with a plea of her own.

"Don't be angry with Dr. Raeker, please; 'Mina and I can see what he's doing, and we like Nick, too."

Raeker wondered how much of this was true; he wasn't as sure himself as he would like to have been of what he was doing, and the children had not yet talked directly to Nick, though they had been listening to him and his people for a couple of hours. Easy, of course, was a diplomat's daughter. Raeker had learned by now that her mother had died when she was a year old, and she had traveled with her father ever since.

She seemed to be Acquisition; Inquisition; Instruction 113 growing into a competent diplomat in her own right. "It doesn't really matter if Swift does find us," she went on. "What can he do to hurt us, and why should he want to?"

"He threatened to use fire on the robot if it didn't come with him to the cave village," retorted the Drommian, "and if he does the same to the 'scaphe's hull when you fail to tell him something he wants to know, you'll be in some trouble."

"But he knew that f.a.gin didn't speak his language, and was very patiently teaching it during the three weeks or so it was in his power; why should he be less patient with us? We're perfectly willing to teach him anything we know, and we can talk to him with less trouble than Dr. Raeker could-at least, there won't be the delay."

A burst of shrill sound from Aminadorneldo followed and, presumably, supported Easy's argument; Aminada-barlee cooled visibly. Raeker wondered how long it would last. At least, things were safe politically for the moment; he turned his attention back to Tenebra and to Nick.

That worthy had started his group back toward the original meeting place, with two running ahead-the herd had been unprotected quite long enough. Nick himself was standing beside the robot, apparently waiting for comment or instructions. Raeker had none to give, and covered with a question of his own.

"How about it, Nick? Will he come back? Or more accurately, will Swift go along with us?"

"You know as well as I."

"No, I don't. You spent a long time with Swift and his people; you know him if any of us do. Was I right in playing on his desire for things we could bring him? I realize he wanted to know about things like fire, but don't you think it was for what he saw could be done with it?"

"It seems likely," admitted Nick, "but I don't see how it's possible to be sure of what anyone's thinking or what he's going to do."

"I don't either, though some of my people keep try- 114 CLOSE TO CRITICAL.

ing." The two started after the rest of the group, scarcely noticing the minor quake that snapped a few of the mor brittle plants around them. Nick almost unthinkingly gathered firewood as he went, a habit of years which had developed in the old village after the more accessible fuel near the hilltop had been exhausted. He had quite a stack in his four arms by the time they rejoined the others. This was piled with the rest; the herd was checked and the strays brought back together; and then f.a.gin called a meeting.

"You all heard what I told Swift's man, about the machine which was stranded somewhere here with some of my people in it. If it is not found and fixed shortly, those people will die. You know as well as I that rescue of people in danger is of more importance than almost anything else; and for that reason, we are going to drop all other activities, except those needed actually to stay alive, while we look for that ship.

"I will give you a description, as completely as possible, of the place where they are. We'll check all our maps for similarity-I'll help you there; I can do it faster- and then you'll go out in pairs to check all likely spots. If we don't find them, mapping will proceed as rapidly as possible, to the exclusion of all other scientific activities.

"For the rest of today, Betsey and Nick will take care of camp and herd; search teams will be Oliver and Dorothy, John and Nancy, and Jim and Jane. I will a.s.sign an area to each of the teams as soon as the maps have been checked; in the meantime, you might all be gathering firewood for tonight." The group scattered obediently.

The geologists in the Vindemiatrix had for some time been matching, or trying to match, Easy's not too complete description of the bathyscaphe's environs; they had come up with four or five possible locations, none of which made them really happy. However, when a sixth possibility was finally settled on, Raeker called the exploring teams back to the robot and a.s.signed two of the hope- Acquisition; Inquisition; Instruction 115 ful areas to each team. These were all in the general direction of the old village, naturally, since the mapping had gone on radially from that point in the two or three years the cartography project had been going. They were all on the nearer side of that region, however, since the men who had done the matching had been influenced by the realization that the 'scaphe must have drifted seaward on the night that it moved. It seemed likely, therefore, that a day to go, a day to explore, and a day to return would suffice for this step of the plan. By that time, Swift might be back with his people, and the rate of search could be stepped up. That was why Nick had been kept behind at the camp site; he might be needed as an in- terpreter.

The instructions were heard, the villagers' own maps were checked, weapons were examined, and the parties set out. Nick and Betsey, standing beside the robot, watched them go; and far away, Raeker finally left the observing room to get some sleep. The diplomats stayed awake, chatting with their children as the latter described the animals which came into sight from time to time. In this relatively dull fashion the rest of the ship's day, a night, and part of another day were spent, while the search teams plodded st.u.r.dily toward their a.s.signed areas.

This was the twenty-seventh ship's day since the accident to the bathyscaphe, the afternoon of the seventh day as far as Nick and his people were concerned. The children were understandably impatient; both fathers had to explain again and again how small were their chances of being found at the very beginning of the search. On this day, at least, human and Drommian were in remarkably close accord. In spite of this unity of effort, however, the children tended to spend more and more tune at the windows as the day drew on, and from time to time even Easy brought up the subject of using the spotlights to guide the searchers who should be approaching. Her 116 CLOSE TO CRITICAL.

father kept reminding her that Raeker had advised against it; but eventually Raeker withdrew his objection.

"It'll make the kid feel more a part of the operation," he said in an aside to Rich, "and I can't see that there's much, if any, more chance of Swift's sighting them than of our own people's doing it at the moment. Let her play with the lights."

Easy happily made full use of the permission and the bathyscaphe blazed far brighter than daylight-since daylight was utter darkness to human eyes-at Tenebra's surface. Rich was not too happy about the permission; it seemed to him encouraging the youngster in her unreasonable hope of an early rescue, and he feared the effects of disappointment.

"Listen to them," he growled. "Yelling to each other every time something moves within half a mile. If they could see any farther it would be still worse-thank goodness they're using their eyes instead of the photocells of the robot. That'll last until they get sleepy; then they'll start again when they wake up-"