by Hal Clement
It was the first time there had been anything like strong words between the symbiote and his host. Fortunately Bob had sense enough to see the reason behind the Hunter's statements and sufficient self-control to hide the slight annoyance he could not help feeling at the Hunter's refusal to relieve his pain. At least, he told himself, shaking the throbbing hand, nothing dangerous could come of it.
But he had to revise his idea of life with the Hunter. He had been visualizing the period during the search as a sort of Paradise-not that he ever was bothered seriously by minor injuries, colds, and the like, but it would have been nice not to have to consider them. Mosquitoes and sand flies, for example-he had wanted to ask the Hunter what he could do about pests like those, but now he felt rather uncomfortable at the thought He would have to wait and see.
The night which finally closed in on them was calm. Bob, making the most of his lack of supervision, stayed late on the bridge, sometimes silently watching the sea and sometimes talking with the man at the wheel. Around midnight he left the bridge and made his way aft. For a little while he leaned over the stern railing, watching the luminous wake of the tanker and thinking of the resemblance between the trackless breadth of the ocean and the planet which the Hunter might have to search. Finally he sought his bunk.
The wind picked up during the night, and when Bob arose in the morning the sea was rather high. The Hunter had opportunity for research into the causes and nature of seasickness, eventually reaching the conclusion that he could do nothing about it without doing permanent damage to his host's sense of balance. Fortunately for Bob the wind died down after a few hours, and the waves subsided almost as speedily; the tanker had barely touched the edge of the storm area.
He quickly forgot his annoyance once he could associate with the crew again, however, for, as he knew from previous experience, his home island should become visible shortly after noon. For the latter half of the morning he practically vibrated between bow and bridge, gazing eagerly ahead over the long swells toward family, friends, and-danger, though he did not fully appreciate the last.
Chapter VIII. SETTING…
THOUGH the island was "high" in the local terminology -that is, the submarine mountain which formed its base actually projected above the surface of the sea, rather than merely approaching it closely enough to serve as foundation for a coral superstructure-its highest point was only about ninety feet above sea level; so the tanker was comparatively close before Bob could point out anything to his invisible guest. The Hunter, finally seeing his hunting ground actually before him, thought it was time to call the meeting to order.
"Bob," he projected, "I know you enjoy this, but we really cannot see much as yet, and we will be ashore in a couple of hours. If you don't mind, I should like to see your map again."
Although the alien had no means of expressing emotion in his writing, Bob caught the undercurrent of seriousness in his words. "All right, Hunter," he answered, and went aft to the cabin where he had left the map. When the sheet was spread out in front of them, the detective went right to the point.
"Bob, have you thought about how we are going to catch this being? I never answered your question before."
"I was wondering, when you didn't You people are so queer-to me, that is-that I decided you must be able to smell him out or something. You certainly can't see him, if he's like you. Do you have some sort of gadget that will find him for you?
"Don't rub it in." The Hunter did not explain his phrase. "I have no apparatus whatever. This is your planet; how would you go about it?"
Bob pondered for a few moments. "If you actually go into a body, I suppose you can tell if there's another of your people there." This was more a statement than a question, but the Hunter made the brief sign which Bob had come to accept as an affirmative. "How long would such a search take? Could you get through the skin far enough while I was shaking hands with someone, say?"
"No. It takes many minutes to enter a body like yours without giving warning. The openings in your skin are large, but my body is much larger. If you let go of the other person's hand while I was still partly in both bodies, it would be very embarrassing for all concerned. If I left you entirely and worked at night while people were asleep, I suppose I could cover the whole island eventually; but I would be very much restricted in speed, and would be in an extremely awkward position when I found him. I will undoubtedly have to make the final check that way, but I should very much like to be pretty sure of my ground before testing anyone. I still want your ideas."
"I don't know any of your standard methods," Bob said slowly. "And I can't, right now, think of means for checking people for company} but we might try to trace his course from the time he landed, and find what people he might have got at. Could that be done?"
"With the addition of one word, yes. We can trace his possible course. There is likely to be little or no evidence about his actual path, but I can judge, I think, with considerable accuracy what he would do in any given situation. Of course I'11 have to know a lot about the situation: all you can tell me, and all I can see for myself."
"I can see that," answered Bob. "All right, we'll have to' start with the time he reached the island-if he did. Any ideas?"
"We'll have to start sooner than that. Before we can guess where he landed, we must judge where he crashed. Will you point out on your map the place where I found you?
Bob nodded, and his finger indicated a point on the paper. At the northwest tip of the island-the end of the longer branch of the L-the land tapered to a blunt point; and from this point the reef extended, first northward and then curving to the east and back to the south to enclose the lagoon. Bob was indicating the west side of this point.
"This," he said, "is the only real sea beach on the island. It's the only part of the shore not protected by the reef.
You see south of the tip there's a few hundred yards before the reef starts again and keeps the breakers from the whole south shore. It's the place the fellows and I like best, and it's where we were swimming the day you arrived. I remember that shark."
"Very well." The Hunter took up the conversation. "Up until shortly before we reached the earth's atmosphere I was tracking him on automatic control, so that I was within a few feet of his line of flight When I realized how close we were to the planet I went on manual and tried to drive straight away, but it was along the same line. Even allowing for the disturbance your atmosphere caused on our lines of flight, I don't think we could have struck the water more than a mile or two apart. I can check that; I was watching him on the bow scanner, which has only a ten-degree field of vision.
"Also, I could not have crashed far offshore. Do you know how rapidly the water deepens off the island?"
"Not in feet. I know it's steep, though; large ships can come quite close to the reef."
"That's what I thought; and I was in shallow water. We crashed, we will say, within a two-mile radius of this point." The Hunter momentarily shaded, on Bob's retina, a point a little way off the shore from the beach. "And much of that can be eliminated. He certainly did not crash on shore; my instruments showed him sinking after the initial check. I am equally sure he did not land in the lagoon, since you say it is very shallow, and he must have struck hard enough to reach its bottom instantly-at a guess, he must have had over fifty feet of water; I certainly did, though not much over, I should say.
"We can, then, act on the assumption that he landed in the two-mile semicircle to the west of the island, centered just off-shore from your beach. I admit that is not an absolute certainty, and it may be hard to prove, but it gives us something to start on. Have you any other ideas?"
"Just questions. How long would it have taken him to get ashore?"
"Your guess is as good as mine. If he had the luck I did, a few hours. If he was in very deep water, with even less oxygen than I, and a stronger sense of caution, he might have spent days or weeks crawling along the bottom to shore. I myself would never have attacked that shark, or
ventured to swim out of touch with the bottom, unless I had been very sure I was near shore."
"How would he have known the right direction? Maybe he's still crawling around down there."
"Maybe. However, with the storm that night he could have determined the direction of the breakers as easily as I did; and if the bottom slopes as steeply as you think, it would have furnished another clue for him. I don't think that problem would have been serious. Of course he is known to be a coward; that may have kept him with the wreckage of his ship for quite a while."
"Then in order to go any farther we'll have to explore the reef for a mile or so each way from the beach, to see if he left any traces. Is that right? And if he has, what do you suppose he will have done after landing-same as you?" "Your first guess is right. As for the question, that depends. He would certainly want to find a host as soon as possible; but whether he simply waited for one where he landed, or went in search of something suitable, is hard to say. If he landed at a spot where any artificial structures are visible, he would probably have made his way to them, on the theory that intelligent beings were bound to come to them sooner or later. It's something that can't be predicted exactly, that's why I said I would have to know all the circumstances to guess his actions."
Bob nodded slowly, digesting this. Finally he asked, "What sort of traces are you likely to find at his place of landing? And if you don't find any, what will we do?"
"I don't know." There was no indication which question was being answered; and Bob finally grew tired of waiting for further explanation. It bothered him, for even he could see that the methods they had just outlined were not very promising. He thought intently for a time, half hoping his guest would come out with some supplementary technique from his own science. Suddenly an idea struck him.
"Hunter! I just thought of something! Remember the only time you could get to me, that day on the beach, was when I fell asleep?" The alien expressed assent. "Well, won't the same be true of this other fellow? He couldn't catch a person, or at least couldn't do it without being seen. You said yourself that it would take several minutes to get right inside; and even if this fellow doesn't care about the feelings or health of his host, he still wouldn't want to be seen. So it ought to narrow things down a bit if I found out who had been sleeping near the water in the last few months. There aren't any houses near the sea -Norm Hay's is the closest, and there shouldn't be too many people who made picnics the way we did that day. How about it?"
"You may have a point there. It is certainly worth trying; but remember, there is no part of the island that he could not reach given time enough, and everybody sleeps at some time or other-though he mightn't know that, come to think of it. Certainly anyone who has slept near the shore is, as you say, suspect"
A change in the rhythm of the engines interrupted the thoughtful silence that followed this remark, and Bob went back on deck, to find that the tanker had slowed and was turning to line up for the entrance to the western passage through the reef. A hasty trip along the catwalks took them to the bow, from which an unobstructed view could be had of the north reef and lagoon.
The reef, it seemed to the Hunter, was not too encouraging a field of search. Certainly no human being could have hidden there for long; and while his quarry could undoubtedly remain concealed, life in such a place would not be pleasant. Long sections of the barrier were barely visible above water, their position betrayed mostly by the breakers. Some portions were higher and had accumulated enough soil to support sparse vegetation-even coconut palms in one or two places. As the tanker nosed into the narrow passage, he realized that, in spite of this, searching the reef for clues might not be easy; it was never possible for a person to travel more than a few rods on foot, as he could see from the broken-up nature of the barrier; and on the outer side at least boating would be extremely dangerous-the endless breakers crashing through the openings in the coral created fierce and unpredictable currents and eddies almost certain to sweep any small craft against the rock-hard roughness of the reef. Even the tanker, big as she was and with plenty of steerage way, kept to the center of the marked channel while Bob and the Hunter watched the coral slip by on either side.
Even inside the lagoon they stayed carefully between the buoys, the Hunter noticed; and he recalled what Bob had said about the shallowness of the water here. On either side of them, scattered over the several square miles between reef and island proper, were angular concrete bulks that the Hunter assumed to be the culture tanks. These were from two to three hundred feet on a side, but their walls did not extend more than five or six feet above the water. The nearest was too far away for small details to be made out, but the Hunter was pretty sure it was covered by a roof consisting mostly of glass panes, while small square superstructures at various points were connected by catwalks to each other and to a diminutive landing stage on the side toward the channel.
Ahead of them was a larger structure, rather different in detail, and as they approached its purpose became evident Like the tanks, it was rectangular in shape, but it rose much higher out of the water-almost as high as the tanker's bridge for the central portions. The "deck" level was lower but still considerably above that of the culture tanks. This surface was covered with various structures, some obviously storage tanks and pumps, others more obscure in nature. On the side toward the approaching vessel were great mooring cables and even bigger hoses, with twenty or thirty men visible working around them. The structure obviously was the dock to which Bob had referred and which was used to store and transfer the fuel oils which were the chief product of the island.
Both watchers looked through Bob's eyes with interest as the tanker glided in to the dock and settled against the fenders. More lines snaked across and were pulled aboard, drawing the hoses after them; and in a remarkably short time the thudding of pumps showed that the last eight days' production was flowing into the tanker. It took a hail from the bridge to distract them from the process.
"Bob! You'll need some help with your stuff, getting it ashore, won't you?" Teroa was calling down to the boy. "Yes, thanks," Bob called back. "I'll be right there." He took one more quick look around, and his grin broadened at something he saw; then he was speeding over the catwalks to the stern. Partly visible around the corner of the dock from where he had been standing was the long causeway that connected the structure with the shore; and along that causeway he had seen a jeep driving furiously. He knew who the driver of that vehicle would be.
The baggage was tumbled out onto the dock in record time, but the jeep had squealed around the corner and come to halt beside the hoses some minutes before Bob and the mate came down the plank with the last piece between them. Bob dropped his end of the foot locker and ran to meet the man standing beside the little car. The Hunter watched with interest and some sympathy.
Even he was sufficiently familiar with human faces by now to detect the resemblance between father and son. Bob still had six or seven inches of height to pick up, but there was the same dark hair and blue eyes, the same straight nose and broad, easily smiling mouth, and the same chin.
Bob's greeting had the exuberance natural to his age; his father, while equally delighted, maintained an undercurrent of gravity that went unnoticed by the boy but which was both seen and understood by the Hunter. The alien realized he had one other job-it was going to be necessary to convince Mr. Kinnaird that there was nothing actually wrong with his son, or the latter's freedom of action might be seriously curtailed. He filed that thought for the moment, however, and listened with interest to the conversation. Bob was overwhelming his father with a flood of questions that threatened to involve the doings of the entire population of the island. At first the Hunter was minded to criticize his host's action in starting the investigation so early; but he presently realized that the search was far from the boy's mind. He was simply trying to fill a five-month gap. The detective stopped worrying and listened carefully to Mr. Kinnaird's answers in the hope of finding some useful informa
tion; and he was human enough to be disappointed when the man cut off the flood of questions with a laugh.
"Bob boy! I don't know what everyone's been up to since you left; you'll have to ask them. I'm going to have to be here until they finish loading; you'd better take the jeep up to the house with your luggage-I expect your mother could stand seeing you, if you can spare the time. Your friends won't be out of school yet, anyway. Just a minute." He rifled through the jeep's toolbox recklessly, finally extracting a well-cased set of calipers from the collection of center punches, cold chisels, and wrenches.
"Oh, my gosh, that's right; I'll have to see about school myself, won't I? I'd forgotten I wasn't coming back for vacation this time." He looked so sober for a moment that his father laughed again, not realizing the cause of his son's sudden thoughtfulness. Bob recovered quickly, however, and looked up again. "Okay, Dad, I'll get the stuff home. See you at supper?"
"Yes, provided you get that jeep back here as soon as you've finished with it. And no remarks about my needing exercise!"
Bob grinned, good humor completely restored. "Not until I'm dressed to go swimming," he replied.
The loading was quickly accomplished, and Bob, sliding under the wheel, sent the little vehicle rapidly along the causeway to the shore. From here, as he had told the Hunter, a paved road led straight inland for a quarter of a mile, where it joined the main thoroughfare of the island at right angles. There was a large cluster of corrugated-iron sheds flanking the short road, and when they reached the turn the Hunter could see that these extended to the left, up the shorter arm of the island. He could also see the white concrete of at least one more culture tank peering around the corner of the hill in that direction and resolved to ask Bob at the first opportunity why these were not built in the water like the others.
