by Hal Clement
The Hunter was not laughing, however, and could scarcely have felt less like it. He wanted to talk to Bob but had so much to say that he could hardly decide where to begin. He was intensely relieved when his young host took up his station in the bow of the boat rather than at an oar; and the instant Bob was looking away from his friends, the Hunter attracted his attention.
"Bob!" The projected letters were thick, slanted, and underlined. They would have been colored if there had been any way to do it; as it was, the boy got the desired impression of urgency and promptly directed his gaze toward the horizon.
"We will pass over," the Hunter began, "for the moment, at least, your tendency to expose yourself to minor injury because you know I will take care of it The tendency itself is bad enough, but you have been practically broadcasting your confidence in your immunity. You offered publicly to go into that water this morning without the least hesitation; you have been announcing your new interest in biology in general and viruses in particular to all and sundry. Several times today I felt like forgetting my upbringing and paralyzing your tongue. At first I merely thought you might scare our quarry into a better hiding place; now I am not sure that the matter may not be even more serious."
"But what else could it do?" Bob muttered the question so that none of the others could hear.
"I am not certain, of course, but it seems odd that your near accident should follow so closely all that talk-particularly when the talk was in the hearing of some of our likeliest suspects." Bob absorbed that thought in silence for a minute or two. He had not previously considered that there might be personal danger in this mission. Before he could think of anything to say the Hunter added a point. "Even your examining that dead fish as closely as you did could easily attract the attention of a person as suspicious as our friend is likely to be."
"But Norm was examining the skate as much as I was," pointed out Bob.
"So I noticed." The Hunter did not enlarge upon that point, leaving his young hostto derive any implications he might like from it.
"But anyway, what could he do? How could he have caused that fall-you said yourself that you couldn't make me do anything. Is he different from you?"
"No. It is quite true that he could not have forced any of those people to push you, or anything like it. However, he might have persuaded them; you have done much for me, remember."
"But you said he would not have made himself known."
"I didn't think he would-it would be risky for him. Still, he might have decided to chance it, and enlist his host's aid by some story or other-that would not be hard. How could the host prove he was living?"
"I don't see, offhand; but what good would it have done him if I had gone into the drink back there? I can swim, and everyone there knows it; and if I couldn't, and got drowned, that wouldn't stop you for long."
'True; but he may have intended that you be slightly hurt, so that I would betray myself by repair activities. After all, no matter what story he told his host, he would be unlikely to persuade one of your friends to do you serious or permanent harm."
"You think, then, that maybe Charlie Teroa is trying to get that job off the island to suit our friend? I thought he was covering up that story about sleeping on the job because he really wanted to start working."
"The possibility exists, certainly. We definitely must find means of checking him before he goes-or keeping him from going." Bob did not pay too much attention to this statement. Not only had he heard it before, but another thought came swelling up into his mind-one that affected him quite enough to have been noticed by his friends had he been facing any of them.
The thought had been started by one of the Hunter's sentences a little earlier and had taken a little while to form; but now it sat there in his mind, glaringly clear. The Hunter had said his quarry would be able to deceive his host by a story and that there would be no way for the host to prove its falsehood. Bob suddenly realized that he had no means of checking the Hunter's own tale. For all he knew, the being now ensconced in his own body might be a fleeing criminal seeking to rid itself of legitimate pursuit.
He almost said something, but his natural common sense saved him at the last instant. This was something he must check himself; and until it was checked, he must appear to be as trustful and co-operative as ever.
He did not really doubt the Hunter seriously. In spite of communication limitations, the alien's very attitude and behavior had given the boy a remarkably good picture of his personality-as was evidenced by the fact that this was the first time Bob had thought to question his motives. Still, the doubt was there now and would have to be resolved in some way.
He was preoccupied when the boat reached the creek and said little while they were pulling it up and stowing the oars. The fact did not cause remark; all the boys were fairly tired and not a little subdued by two accidents in one afternoon. They splashed up the creek to the culvert, retrieved their bicycles from the bushes, and went their various ways, after agreeing to meet at the same place after breakfast.
Alone at last, Bob could speak more freely to the little detective.
"Hunter," he asked, "if you think my talking and investigating are likely to make our friend suspicious of me, why do they worry you? If he tries anything, it will give us a clue to him! That might be the best way to find him-use me as bait. After all, the only smart way to hunt for a needle in a haystack is to use a magnet. How about it?"
"I thought of that. It is too dangerous."
"How can he hurt you?"
"I don't suppose he can. The danger that bothers me is yours. I don't know whether you are showing the bravery of maturity or the foolhardiness of youth, but understand, once and for all, that I will not expose you to any danger as long as I can see an alternative course of action."
Bob made no answer for a moment, and if the Hunter interpreted correctly the tightening of the muscles as the boy strove to suppress a smile of satisfaction he did not mention the fact There was one other thing Bob wanted settled, however, so he put the question as he turned up the drive to his home-he had walked the bicycle from Rice's drive, so there would be no danger in the Hunter's talking to him.
"In the boat you said something about paralyzing my tongue. Could you do it, or were you simply shooting off?"
The Hunter was not familiar with that bit of slang, but was able to guess correctly at its meaning. "I could paralyze any muscle in your body by pressing on the controlling nerve. How long the state would last after I stopped I cannot say, as I haven't tried it with you or any of your people."
"Show me." Bob stopped and kicked down the stand of the bike and stood expectantly.
"Go indoors and eat your supper and stop asking foolish questions!"
Bob went, grinning openly now.
Chapter XIII. ENGINEERING INTERLUDE
SATURDAY was not too profitable from the Hunter's point of view-at least as he judged it then-and even less so from that of Norman Hay. The boys met at the culvert as planned, Norman bearing his piece of netting, but nobody had brought anything that looked capable of doing much to the cement plugs Hay had installed.
It was decided, therefore, to go to the other end of the island, where a new culture was under construction, to see what might be available. They rode together down the road, across the larger creek, and past the school to Teroa's house. Here, instead of turning down toward the dock, they continued straight on, past some more corrugated-iron storage sheds, to the end of the paved surface. This left them on the shoulder of the islands' highest hill though still on the lagoon side. Somewhat below and ahead of them was a row of three small tanks which had been there for some years; higher and still farther ahead was a new structure almost as large as the tanks in the lagoon. This had been completed only a month or two before; and another, the boys knew, was being built beyond it. This was their immediate goal.
While the hard-surfaced road stopped at the last of the sheds, the construction machinery had beaten a very plain trail wh
ich formed a continuation of it. It proved better, however, to traverse this section on foot, and the boys soon abandoned the bicycles rather than walk them. It was not far to go-three hundred yards to the big tank, seventy more along its lower wall, and as much farther to the scene of activity.
Like its neighbor, the new tank was on the hillside, partly cut into the ground and partly above it. The floor had been laid, reinforced, and the concrete cast; those portions of the walls that lay against the earth of the hillside were occupying the attention of the men at the moment. The boys noted with relief that digging seemed to have ended; it should, then, be possible to borrow the tools they needed. They had, as a matter of fact, surprisingly little trouble; they encountered Rice's father almost at once, and he readily located a couple of crowbars and gave permission to take them. He may have had ulterior motives; nearly all the children of the island between the ages of four and seventeen were underfoot at the time-the men were seriously considering having a local regulation passed ordering school to keep seven days a week-and anything that looked as though it might get rid of some of them would have been encouraged. The boys cared nothing about his reasons; they took the bars and returned the way they had come.
It was an encouraging start, but the rest of the morning was less so. They reached the pool without noteworthy delay, and went to work, diving by turns and pecking away at the concrete with the crowbars. They could not even work on the seaward side of the plug; anyone entering the water on that side of the islet would have been cut to pieces against the coral by the first breaker. They had chipped away enough to encourage them by dinner-time but there was yet much to be done.
After the meal, however, meeting at the usual place, they found one of the jeeps parked by the culvert. Standing beside it were Rice and his father and in the back seat was some equipment which the boys recognized.
"Dad's going to blast the gate for us!" called the younger Rice, quite superfluously, as the others arrived. "He got away from the tank for a couple of hours."
"Anything to get you out of my hair," remarked his father. "You'd better stick to your bikes-you, too, Ken. I'll ride the sticks."
"It's safe enough!" remonstrated Bob, who wanted to examine the plunger more closely.
The man looked at him. "No remarks from you," he said. "Your father would have the bunch of you stay here while he laid the charge and come back here with you to fire it! And I don't blame him a bit." He climbed under the wheel without further comment; and Bob, who knew that Mr. Rice had spoken the truth, mounted his bicycle and headed northwest, followed by the others.
At the Hay house the jeep was parked and its load removed. Mr. Rice insisted on carrying the dynamite and caps himself, though Bob thought he had a good argument when he claimed they should not be carried together. The wire and plunger were taken in charge by Bob and Malmstrom, and everybody headed for the beach on foot. They went a little to the left of the course the boys had followed Wednesday and emerged at the southern end of the strip of sand.
Here, as at the pool, the reef reappeared, curving away to the south and east, eventually to circle the island almost completely. On the southern side the lagoon was narrower, the reef never being more than half a mile from the shore, and no attempt had so far been made to build any installations on this side. Where the barrier started at the south end of the little beach was a passage from open sea to lagoon similar to that isolating the islet of the pool; but this was much narrower, offering at the base barely passage for a rowboat.
This was the "gate" to which Rice had referred. It looked, from a little distance, as though it were perfectly clear; but a closer inspection showed, as Rice had said, that there was an obstruction. The end of the passage toward the beach, which was exposed to the waves from the open sea to the west, had been neatly plugged by a brain coral about six feet in diameter, which had been dislodged from some point farther out in the reef and rolled about, probably by successive storms, until it had wedged securely where the waves could drive it no farther. Even the boys had not had to look twice to know they could never shift the huge thing by hand labor, though they had made some half-hearted attempts to break away-enough coral to clear a passage around it.
It was possible, obviously, to reach the southern lagoon in a boat by rowing around the other end of the island, but it was generally agreed that clearing the gate would be worth the trouble.
Mr. Rice unbent sufficiently to allow Colby to place the charge-he did not want to go under water himself- after careful instruction; but he made everyone follow him back to the palm trees and take shelter behind the sturdy trunks before he fired it. The results were very satisfactory: a column of spray and coral chips fountained into the air, accompanied by a moderate amount of noise -dynamite is not particularly loud stuff. When the rain of fragments seemed to be over, the boys raced back to the gate and found that there would be no need of a second blast. About a quarter of the original piece was visible, rolled some distance from its original site; the rest had completely disappeared. There was ample room for the boat.
The boys controlled their exuberance sufficiently to help Mr. Rice pack the blasting equipment back into the jeep; but from that point their opinions were divided. Hay and Malmstrom wanted to go back to work on the pool; Bob and Rice wanted to take advantage of the newly opened gate to explore the southern reef. Colby, as usual, cast no vote. None of them thought of splitting up; and, oddly enough, Hay won the argument, his main point being that it was already well along in the afternoon, and it would be much better to start in the morning and spend the entire day on the reef.
Bob would have been considerably more insistent, in order to let the Hunter examine the rest of his "probable landing" area, but the detective had informed him the night before of the nature of the piece of metal that had indirectly caused Rice's accident.
"It was a generator casing from a ship similar to mine," he said. "And it certainly was not from my own. I am certain of my facts; if I had merely seen it, there might be a chance of error-I suppose your people might have apparatus that would look like it from a little distance- but I felt it while you were pulling at it barehanded. It had line-up marks etched into the metal, indicated by letters of my own alphabet."
"But how did it get there, when the rest of the ship isn't around?"
"I told you our friend was a coward. He must have detached it and carried it with him for protection, accepting the delay such a load would have caused. It was certainly good armor, I will admit; I cannot imagine any living creature breaking or piercing that metal, and he would have to stay so close to the bottom that there would be no chance of being swallowed whole. It was a rather smart move, except that it left us evidence not only of the fact that he has landed on the island, but also where."
"Can you judge what he would do then?"
"Exactly what I said before-pick up a host at the first opportunity, anyone he could catch. Your friends are still definitely under suspicion, including the young man who went to sleep near the reef with a boatload of explosive."
In consequence of this information, Bob was willing to forego the examination of the southern reef, and to spend an afternoon at dull work. It would give him time to think; and thought seemed necessary. He was rewarded during the afternoon with one idea, but he was unable to speak clearly enough with the others around to get it across to Hunter. He finally gave up trying for the time being and concentrated on chipping concrete.
By the time they were ready to go home for supper they had actually penetrated the plug-at least a hole large enough to accommodate one of the crowbars was all the way through. The trip back to the creek was chiefly occupied with an argument whether or not this hole would be sufficient. The discussion was still unsettled when the boys separated.
Once alone Bob promptly put his suggestion up to the Hunter.
"You've been saying all along," he said, "that you would never leave or enter my body when I was awake-that you didn't want me to see you. I don't think I'd
mind, but I won't argue the point any more.
"But suppose I put a container-a can, or box, or almost anything big enough-in my room at night. When I was asleep-I couldn't possibly fool you on that-you could come out and get in the box; if you like, I'll promise not to look inside. Then I could plant it next to the house of each of the fellows in turn and leave it there overnight. You could come out, do all the inspecting you wanted at that house and get back to the can by morning. I could even put some sort of indicator on the can that you could move to tell me whether you wanted to come back to me or go on to the next house."
The Hunter thought for several minutes. "The idea is good, very good," he finally answered. "Its big disadvantages, at least as far as I can see, are only two: first, I could examine only one house each night, and would then be even more helpless than usual until the next night. Second, while I am making those examinations, you will be left unprotected. That might not ordinarily be too bad, but you must remember we now have reason to suspect that our quarry has identified you as my host. If he sprang a trap of some sort while I was away, it might be very bad."
"It might also convince him that I am not your host," pointed out Bob.
"And that, my young friend, might not do either of us the least good." As usual, the Hunter's implied meaning was plain.
At home, Bob found his father already eating, somewhat to his surprise.
"I'm not that late, am I?" he asked anxiously as he entered the dining room.