<h2><SPAN name="XIII" id="XIII"></SPAN>13</h2>
<h3>A HOUND IS LOOSED</h3>
<p>Dalgard's feet touched gravel; he waded cautiously to the bank, where
a bridge across the river made a concealing shadow on the water. None
of the mermen had accompanied him this far. Sssuri, as soon as his
human comrade had started for the storage city, had turned south to
warn and rally the tribes. And the merpeople of the islands had
instituted a loose chain of communication, which led from a clump of
water reeds some two miles back to the seashore, and so out to the
islands. Better than any of the now legendary coms of his Terran
forefathers were these<span class="pagenum"><SPAN name="Page_127" id="Page_127"></SPAN></span> minds of the spies in hiding, who could pick
up the racing thoughts beamed to them and pass them on to their
fellows.</p>
<p>Although there were no signs of life about the city, Dalgard moved
with the same care that he would have used in penetrating a
snake-devil's lair. In the first hour of dawn he had contacted a
hopper. The small beast had been frightened almost out of coherent
thought, and Dalgard had had to spend some time in allaying that
terror to get a fractional idea of what might be going on in this
countryside.</p>
<p>Death—the hopper's terror had come close to insanity. Killers had
come out of the sky, and they were burning—burning—All living things
were fleeing before them. And in that moment Dalgard had been forced
to give up his plan for an unseen spy ring, which would depend upon
the assistance of the animals. His information must come via his own
eyes and ears.</p>
<p>So he kept on, posting the last of the mermen in his mental relay well
away from the city, but swimming upstream himself. Now that he was
here, he could see no traces of the invaders. Since they could not
have landed their sky ships in the thickly built-up section about the
river, it must follow that their camp lay on the outskirts of the
metropolis.</p>
<p>He pulled himself out of the water. Bow and arrows had been left
behind with the last merman; he had only his sword-knife for
protection. But he was not there to fight, only to watch and wait.
Pressing the excess moisture out of his scant clothing, he crept along
the shore. If the strangers were using the streets, it might be well
to get above them. Speculatively he eyed the buildings about him as he
entered the city.</p>
<p>Dalgard continued to keep at street level for two blocks, darting from
doorway to shadowed doorway, alert not only to any sound but to any
flicker of thought. He was reasonably sure, however, that the aliens
would be watching and seeking only for the<span class="pagenum"><SPAN name="Page_128" id="Page_128"></SPAN></span> merpeople. Though they
were not telepathic as their former slaves, Those Others were able to
sense the near presence of a merman, so that the sea people dared not
communicate while within danger range of the aliens without betraying
themselves. It was the fact that he was of a different species,
therefore possibly immune to such detection, which had brought Dalgard
into the city.</p>
<p>He studied the buildings ahead. Among them was a cone-shaped structure
which might have been the base of a tower that had had all stories
above the third summarily amputated. It was ornamented with a series
of bands in high relief, bands bearing the color script of the aliens.
This was the nearest answer to his problem. However the scout did not
move toward it until after a long moment of both visual and mental
inspection of his surroundings. But that inspection did not reach some
twelve streets away where another crouched to watch. Dalgard ran
lightly to the tower at the same moment that Raf shifted his weight
from one foot to the other behind a parapet as he spied upon the knot
of aliens gathered below him in the street....</p>
<p>The pilot had followed them since that early morning hour when Soriki
had awakened him. Not that the chase had led him far in distance. Most
of the time he had spent in waiting just as he was doing now. At first
he had believed that they were searching for something, for they had
ventured into several buildings, each time to emerge conferring, only
to hunt out another and invade it. Since they always returned with
empty hands, he could not believe that they were out for further loot.
Also they moved with more confidence than they had shown the day
before. That confidence led Raf to climb above them so that he could
watch them with less chance of being seen in return.</p>
<p>It had been almost noon when they had at last come into this section.
If two of them had not remained idling on the street as the long
moments crept<span class="pagenum"><SPAN name="Page_129" id="Page_129"></SPAN></span> by, he would have believed that they had given him the
slip, that he was now a cat watching a deserted mouse hole. But at the
moment they were coming back, carrying something.</p>
<p>Raf leaned as far over the parapet as he dared, trying to catch a
better look at the flat, boxlike object two of them had deposited on
the pavement. Whatever it was either needed some adjustment or they
were attempting to open it with poor success, for they had been busied
about it for what seemed an unusually long time. The pilot licked dry
lips and wondered what would happen if he swung down there and just
walked in for a look-see. That idea was hardening into resolution when
suddenly the group below drew quickly apart, leaving the box sitting
alone as they formed a circle about it.</p>
<p>There was a puff of white vapor, a protesting squawk, and the thing
began to rise in jerks as if some giant in the sky was pulling at it
spasmodically. Raf jumped back. Before he could return to his vantage
point, he saw it rise above the edge of the parapet, reach a level
five or six feet above his head, hovering there. It no longer climbed;
instead it began to swing back and forth, describing in each swing a
wider stretch of space.</p>
<p>Back and forth—watching it closely made him almost dizzy. What was
its purpose? Was it a detection device, to locate him? Raf's hand went
to his stun gun. What effect its rays might have on the box he had no
way of knowing, but at that moment he was sorely tempted to try the
beam out, with the oscillating machine as his target.</p>
<p>The motion of the floating black thing became less violent, its swoop
smoother as if some long-idle motor was now working more as its
builders had intended it to perform. The swing made wide circles,
graceful glides as the thing explored the air currents.</p>
<p>Searching—it was plainly searching for something. Just as plainly it
could not be hunting for him, for his pres<span class="pagenum"><SPAN name="Page_130" id="Page_130"></SPAN></span>ence on that roof would
have been uncovered at once. But the machine was—it must be—out of
sight of the warriors in the street. How could they keep in touch with
it if it located what they sought? Unless it had some built-in
signaling device.</p>
<p>Determined to keep it in sight, Raf risked a jump from the parapet of
the building where he had taken cover to another roof beyond, running
lightly across that as the hound bobbed and twisted, away from its
masters, out across the city in pursuit of some mysterious quarry....</p>
<hr style='width: 45%;' />
<p>The climb which had looked so easy from the street proved to be more
difficult when Dalgard actually made it. His hours of swimming in the
river, the night of broken rest, had drained his strength more than he
had known. He was panting as he flattened himself against the wall,
his feet on one of the protruding bands of colored carving, content to
rest before reaching for another hold. To all appearances the city
about him was empty of life and, except for the certainty of the
merpeople that the alien ship and its strange companion had landed
here, he would have believed that he was on a fruitless quest.</p>
<p>Grimly, his lower lip caught between his teeth, the scout began to
climb once more, the sun hot on his body, drawing sweat to dampen his
forehead and his hands. He did not pause again but kept on until he
stood on the top of the shortened tower. The roof here was not flat
but sloped inward to a cuplike depression, where he could see the
outline of a round opening, perhaps a door of sorts. But at that
moment he was too winded to do more than rest.</p>
<p>There was a drowsiness in that air. He was tempted to curl up where he
sat and turn his rest into the sleep his body craved. It was in that
second or so of time when he was beginning to relax, to forget the
tenseness which had gripped him since his return to this ill-omened
place, that he touched<span class="pagenum"><SPAN name="Page_131" id="Page_131"></SPAN></span>—</p>
<p>Dalgard stiffened as if one of his own poisoned arrows had pricked his
skin. Rapport with the merpeople, with the hoppers and the runners,
was easy, familiar. But this was no such touch. It was like contacting
something which was icy cold, inimical from birth, something which he
could never meet on a plain of understanding. He snapped off mind
questing at that instant and huddled where he was, staring up into the
blank turquoise of the sky, waiting—for what he did not know. Unless
it was for that other mind to follow and ferret out his hiding place,
to turn him inside out and wring from him everything he ever knew or
hoped to learn.</p>
<p>As time passed in long breaths, and he was not so invaded, he began to
think that while he had been aware of contact, the other had not. And,
emboldened, he sent out a tracer. Unconsciously, as the tracer groped,
he pivoted his body. It lay—there!</p>
<p>At the second touch he withdrew in the same second, afraid of
revelation. But as he returned to probe delicately, ready to flee at
the first hint that the other suspected, his belief in temporary
safety grew. To his disappointment he could not pierce beyond the
outer wall of identity. There was a living creature of a high rate of
intelligence, a creature alien to his own thought processes, not too
far away. And though his attempts to enter into closer communication
grew bolder, he could not crack the barrier which kept them apart. He
had long known that contact with the merpeople was on a lower, a far
lower, band than they used when among themselves, and that they were
only able to "talk" with the colonists because for generations they
had exchanged thought symbols with the hoppers and other unlike
species. They had been frank in admitting that while Those Others
could be aware of their presence through telepathic means, they could
not exchange thoughts. So now, his own band, basically strange to this
planet, might well go unnoticed by the once dominant race of Astra.<span class="pagenum"><SPAN name="Page_132" id="Page_132"></SPAN></span></p>
<p>They—or him—or it—were over in that direction, Dalgard was sure of
that. He faced northwest and saw for the first time, about a mile
away, the swelling of the globe. If the strange flyer reported by the
merpeople was beside it, he could not distinguish it from this
distance. Yet he was sure the mind he had located was closer to him
than that ship.</p>
<p>Then he saw it—a black object rising by stiff jerks into the air as
if it were being dragged upward against its inclination. It was too
small to be a flyer of any sort. Long ago the colonists had patched
together a physical description of Those Others which had assured them
that the aliens were close to them in general characteristics and
size. No, that couldn't be carrying a passenger. Then what—or why?</p>
<p>The object swung out in a gradually widening circle. Dalgard held to
the walled edge of the roof. Something within him suggested that it
would be wiser to seek some less open space, that there was danger in
that flying box. He released his hold and went to the trap door. It
took only a minute to fit his fingers into round holes and tug. Its
stubborn resistance gave, and stale air whooshed out in his face as it
opened.</p>
<p>In his battle with the door Dalgard had ignored the box, so he was
startled when, with a piercing whistle, almost too high on the scale
for his ears to catch, the thing suddenly swooped into a screaming
dive, apparently heading straight for him. Dalgard flung himself
through the trap door, luckily landing on one of the steep, curved
ramps. He lost his balance and slid down into the dark, trying to
brake his descent with his hands, the eerie screech of the box
trumpeting in his ears.</p>
<p>There was little light in this section of the cone building, and he
was brought up with bruising force against a blank wall two floors
below where he had so unceremoniously entered. As he lay in the dark
trying to gasp some breath back into his lungs, he could<span class="pagenum"><SPAN name="Page_133" id="Page_133"></SPAN></span> still hear
the squeal. Was it summoning? There was no time to be lost in getting
away.</p>
<p>On his hands and knees the scout crept along what must have been a
short hall until he found a second descending ramp, this one less
steep than the first, so that he was able to keep to his feet while
using it. And the gloom of the next floor was broken by odd scraps of
light which showed through pierced portions of the decorative bands.
The door was there, a locking bar across it.</p>
<p>Dalgard did not try to shift that at once, although he laid his hands
upon it. If the box was a hound for hunters, had it already drawn its
masters to this building? Would he open the door only to be faced by
the danger he wished most to avoid? Desperately he tried to probe with
the mind touch. But he could not find the alien band. Was that because
the hunters could control their minds as they crept up? His kind knew
so little of Those Others, and the merpeople's hatred of their ancient
masters was so great that they tended to avoid rather than study them.</p>
<p>The scout's sixth sense told him that nothing waited outside. But the
longer he lingered with that beacon overhead the slimmer his chances
would be. He must move and quickly. Sliding back the bar, he opened
the door a crack and looked out into a deserted street. There was
another doorway to take shelter in some ten feet or so farther along,
beyond that an alley wall overhung by a balcony. He marked these
refuges and went out to make his first dash to safety.</p>
<p>Nothing stirred, and he sprinted. There came again that piercing
shriek to tear his ears as the floating box dived at him. He swerved
away from the doorway to dart on under the balcony, sure now that he
must keep moving, but under cover so that the black thing could not
pounce. If he could find some entrance into the underground ways such
as those that ran from the <span class="pagenum"><SPAN name="Page_134" id="Page_134"></SPAN></span>arena—But now he was not even sure in
which direction the arena stood, and he dared no longer climb to look
over the surrounding territory.</p>
<p>He touched the alien mind! They <i>were</i> moving in, following the lead
of their hound. He must not allow himself to be cornered. The scout
fought down a surge of panic, attempted to battle the tenseness which
tied his nerves. He must not run mindlessly either. That was probably
just what they wanted him to do. So he stood under the balcony and
tried not to listen to the shrilling of the box as he studied the
strip of alley.</p>
<p>This was a narrow side way, and he had not made the wisest of choices
in entering it, for not much farther ahead it was bordered with smooth
walls protecting what had once been gardens. He had no way of telling
whether the box would actually attack him if he were caught in the
open—to put that to the test was foolhardy—nor could he judge its
speed of movement.</p>
<p>The walls.... A breeze which blew up the lane carried with it the
smell of the river. There was a slim chance that it might end in
water, and he had a feeling that if he could reach the stream he would
be able to baffle the hunters. He did not have long to make up his
mind—the aliens were closer.</p>
<p>Lightly Dalgard ran under the length of the balcony, turned sharply as
he reached the end of its protecting cover, and leaped. His fingers
gripped the ornamental grillwork, and he was able to pull himself up
and over to the narrow runway. A canopy was still over his head, and
there came a bump against it as the baffled box thumped. So it would
try to knock him off if it could get the chance! That was worth
knowing.</p>
<p>He looked over the walls. They guarded masses of tangled vegetation
grown through years of neglect into thick mats. And those promised a
way of escape, if he could reach them. He studied the windows, the
door opening onto the balcony. With the hilt of his sword-knife he
smashed his way into the house, to<span class="pagenum"><SPAN name="Page_135" id="Page_135"></SPAN></span> course swiftly through the rooms
to the lower floor, and find the entrance to the garden.</p>
<p>Facing that briary jungle on the ground level was a little daunting.
To get through it would be a matter of cutting his way. Could he do it
and escape that bobbing, shrilling thing in the air? A trace of
pebbled path gave him a ghost of a chance, and he knew that these
shrubs tended to grow upward and not mass until they were several feet
above the ground.</p>
<p>Trusting to luck, Dalgard burrowed into the green mass, slashing with
his knife at anything which denied him entrance. He was swallowed up
in a strange dim world wherein dead shrubs and living were twined
together to form a roof, cutting off the light and heat of the sun.
From the sour earth, sliming his hands and knees, arose an
overpowering stench of decay and disturbed mold. In the dusk he had to
wait for his eyes to adjust before he could mark the line of the old
path he had taken for his guide.</p>
<p>Fortunately, after the first few feet, he discovered that the tunneled
path was less obstructed than he had feared. The thick mat overhead
had kept the sun from the ground and killed off all the lesser plants
so that it was possible to creep along a fairly open strip. He was
conscious of the chitter of insects, but no animals lingered here.
Under him the ground grew more moist and the mold was close to mud in
consistency. He dared to hope that this meant he was either
approaching the river or some garden stream feeding into the larger
flood.</p>
<p>Somewhere the squeal of the hunter kept up a steady cry, but, unless
the foliage above him was distorting that sound, Dalgard believed that
the box was no longer directly above him. Had he in some way thrown it
off his trail?</p>
<p>He found his stream, a thread of water, hardly more than a series of
scummy pools with the vegetation still meeting almost solidly over it.
And it brought him to a wall with a drain through which he was sure
he<span class="pagenum"><SPAN name="Page_136" id="Page_136"></SPAN></span> could crawl. Disliking to venture into that cramped darkness, but
seeing no other way out, the scout squirmed forward in slime and muck,
feeling the rasp of rough stone on his shoulders as he made his worm's
progress into the unknown.</p>
<p>Once he was forced to halt and, in the dark, loosen and pick out
stones embedded in the mud bottom narrowing the passage. On the other
side of that danger point, he was free to wriggle on. Could the box
trace him now? He had no idea of the principle on which it operated;
he could only hope.</p>
<p>Then before him he saw the ghostly gray of light and squirmed with
renewed vigor—to be faced then by a grille, beyond which was the open
world. Once more his knife came into use as he pried and dug at the
barrier. He worked for long moments until the grille splashed out into
the sluggish current a foot or so below, and then he made ready to
lower himself into the same flood.</p>
<p>It was only because he was a trained hunter that he avoided death in
that moment. Some instinct made him dodge even as he slipped through,
and the hurtling black box did not strike true at the base of his
brain but raked along his scalp, tearing the flesh and sending him
tumbling unconscious into the brown water.</p>
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