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<h2> CHAPTER X. A CANNON SHOT </h2>
<p>BENITO THEN HAD disappeared beneath the vast sheet which still covered the
corpse of the adventurer. Ah! If he had had the power to divert the waters
of the river, to turn them into vapor, or to drain them off—if he
could have made the Frias basin dry down stream, from the bar up to the
influx of the Rio Negro, the case hidden in Torres' clothes would already
have been in his hand! His father's innocence would have been recognized!
Joam Dacosta, restored to liberty, would have again started on the descent
of the river, and what terrible trials would have been avoided!</p>
<p>Benito had reached the bottom. His heavy shoes made the gravel on the bed
crunch beneath him. He was in some ten or fifteen feet of water, at the
base of the cliff, which was here very steep, and at the very spot where
Torres had disappeared.</p>
<p>Near him was a tangled mass of reeds and twigs and aquatic plants, all
laced together, which assuredly during the researches of the previous day
no pole could have penetrated. It was consequently possible that the body
was entangled among the submarine shrubs, and still in the place where it
had originally fallen.</p>
<p>Hereabouts, thanks to the eddy produced by the prolongation of one of the
spurs running out into the stream, the current was absolutely <i>nil</i>.
Benito guided his movements by those of the raft, which the long poles of
the Indians kept just over his head.</p>
<p>The light penetrated deep through the clear waters, and the magnificent
sun, shining in a cloudless sky, shot its rays down into them unchecked.
Under ordinary conditions, at a depth of some twenty feet in water, the
view becomes exceedingly blurred, but here the waters seemed to be
impregnated with a luminous fluid, and Benito was able to descend still
lower without the darkness concealing the river bed.</p>
<p>The young man slowly made his way along the bank. With his iron-shod spear
he probed the plants and rubbish accumulated along its foot. Flocks of
fish, if we can use such an expression, escaped on all sides from the
dense thickets like flocks of birds. It seemed as though the thousand
pieces of a broken mirror glimmered through the waters. At the same time
scores of crustaceans scampered over the sand, like huge ants hurrying
from their hills.</p>
<p>Notwithstanding that Benito did not leave a single point of the river
unexplored, he never caught sight of the object of his search. He noticed,
however, that the slope of the river bed was very abrupt, and he concluded
that Torres had rolled beyond the eddy toward the center of the stream. If
so, he would probably still recover the body, for the current could hardly
touch it at the depth, which was already great, and seemed sensibly to
increase. Benito then resolved to pursue his investigations on the side
where he had begun to probe the vegetation. This was why he continued to
advance in that direction, and the raft had to follow him during a quarter
of an hour, as had been previously arranged.</p>
<p>The quarter of an hour had elapsed, and Benito had found nothing. He felt
the need of ascending to the surface, so as to once more experience those
physiological conditions in which he could recoup his strength. In certain
spots, where the depth of the river necessitated it, he had had to descend
about thirty feet. He had thus to support a pressure almost equal to an
atmosphere, with the result of the physical fatigue and mental agitation
which attack those who are not used to this kind of work. Benito then
pulled the communication cord, and the men on the raft commenced to haul
him in, but they worked slowly, taking a minute to draw him up two or
three feet so as not to produce in his internal organs the dreadful
effects of decompression.</p>
<p>As soon as the young man had set foot on the raft the metallic sphere of
the diving-dress was raised, and he took a long breath and sat down to
rest.</p>
<p>The pirogues immediately rowed alongside. Manoel, Fragoso, and Araujo came
close to him, waiting for him to speak.</p>
<p>"Well?" asked Manoel.</p>
<p>"Still nothing! Nothing!"</p>
<p>"Have you not seen a trace?"</p>
<p>"Not one!"</p>
<p>"Shall I go down now?"</p>
<p>"No, Manoel," answered Benito; "I have begun; I know where to go. Let me
do it!"</p>
<p>Benito then explained to the pilot that his intention was to visit the
lower part of the bank up to the Bar of Frias, for there the slope had
perhaps stopped the corpse, if, floating between the two streams, it had
in the least degree been affected by the current. But first he wanted to
skirt the bank and carefully explore a sort of hole formed in the slope of
the bed, to the bottom of which the poles had evidently not been able to
penetrate. Araujo approved of this plan, and made the necessary
preparations.</p>
<p>Manoel gave Benito a little advice. "As you want to pursue your search on
that side," he said, "the raft will have to go over there obliquely; but
mind what you are doing, Benito. That is much deeper than where you have
been yet; it may be fifty or sixty feet, and you will have to support a
pressure of quite two atmospheres. Only venture with extreme caution, or
you may lose your presence of mind, or no longer know where you are or
what to do. If your head feels as if in a vice, and your ears tingle, do
not hesitate to give us the signal, and we will at once haul you up. You
can then begin again if you like, as you will have got accustomed to move
about in the deeper parts of the river."</p>
<p>Benito promised to attend to these hints, of which he recognized the
importance. He was particularly struck with the fact that his presence of
mind might abandon him at the very moment he wanted it most.</p>
<p>Benito shook hands with Manoel; the sphere of the diving-dress was again
screwed to his neck, the pump began to work, and the diver once more
disappeared beneath the stream.</p>
<p>The raft was then taken about forty feet along the left bank, but as it
moved toward the center of the river the current increased in strength,
the ubas were moored, and the rowers kept it from drifting, so as only to
allow it to advance with extreme slowness.</p>
<p>Benito descended very gently, and again found himself on the firm sand.
When his heels touched the ground it could be seen, by the length of the
haulage cord, that he was at a depth of some sixty-five or seventy feet.
He was therefore in a considerable hole, excavated far below the ordinary
level.</p>
<p>The liquid medium was more obscure, but the limpidity of these transparent
waters still allowed the light to penetrate sufficiently for Benito to
distinguish the objects scattered on the bed of the river, and to approach
them with some safety. Besides, the sand, sprinkled with mica flakes,
seemed to form a sort of reflector, and the very grains could be counted
glittering like luminous dust.</p>
<p>Benito moved on, examining and sounding the smallest cavities with his
spear. He continued to advance very slowly; the communication cord was
paid out, and as the pipes which served for the inlet and outlet of the
air were never tightened, the pump was worked under the proper conditions.</p>
<p>Benito turned off so as to reach the middle of the bed of the Amazon,
where there was the greatest depression. Sometimes profound obscurity
thickened around him, and then he could see nothing, so feeble was the
light; but this was a purely passing phenomenon, and due to the raft,
which, floating above his head, intercepted the solar rays and made the
night replace the day. An instant afterward the huge shadow would be
dissipated, and the reflection of the sands appear again in full force.</p>
<p>All the time Benito was going deeper. He felt the increase of the pressure
with which his body was wrapped by the liquid mass. His respiration became
less easy; the retractibility of his organs no longer worked with as much
ease as in the midst of an atmosphere more conveniently adapted for them.
And so he found himself under the action of physiological effects to which
he was unaccustomed. The rumbling grew louder in his ears, but as his
thought was always lucid, as he felt that the action of his brain was
quite clear—even a little more so than usual—he delayed giving
the signal for return, and continued to go down deeper still.</p>
<p>Suddenly, in the subdued light which surrounded him, his attention was
attracted by a confused mass. It seemed to take the form of a corpse,
entangled beneath a clump of aquatic plants. Intense excitement seized
him. He stepped toward the mass; with his spear he felt it. It was the
carcass of a huge cayman, already reduced to a skeleton, and which the
current of the Rio Negro had swept into the bed of the Amazon. Benito
recoiled, and, in spite of the assertions of the pilot, the thought
recurred to him that some living cayman might even then be met with in the
deeps near the Bar of Frias!</p>
<p>But he repelled the idea, and continued his progress, so as to reach the
bottom of the depression.</p>
<p>And now he had arrived at a depth of from eighty to a hundred feet, and
consequently was experiencing a pressure of three atmospheres. If, then,
this cavity was also drawn blank, he would have to suspend his researches.</p>
<p>Experience has shown that the extreme limit for such submarine
explorations lies between a hundred and twenty and a hundred and thirty
feet, and that below this there is great danger, the human organism not
only being hindered from performing his functions under such a pressure,
but the apparatus failing to keep up a sufficient supply of air with the
desirable regularity.</p>
<p>But Benito was resolved to go as far as his mental powers and physical
energies would let him. By some strange presentiment he was drawn toward
this abyss; it seemed to him as though the corpse was very likely to have
rolled to the bottom of the hole, and that Torres, if he had any heavy
things about him, such as a belt containing either money or arms, would
have sunk to the very lowest point. Of a sudden, in a deep hollow, he saw
a body through the gloom! Yes! A corpse, still clothed, stretched out like
a man asleep, with his arms folded under his head!</p>
<p>Was that Torres? In the obscurity, then very dense, he found it difficult
to see; but it was a human body that lay there, less than ten paces off,
and perfectly motionless!</p>
<p>A sharp pang shot through Benito. His heart, for an instant, ceased to
beat. He thought he was going to lose consciousness. By a supreme effort
he recovered himself. He stepped toward the corpse.</p>
<p>Suddenly a shock as violent as unexpected made his whole frame vibrate! A
long whip seemed to twine round his body, and in spite of the thick
diving-dress he felt himself lashed again and again.</p>
<p>"A gymnotus!" he said.</p>
<p>It was the only word that passed his lips.</p>
<p>In fact, it was a <i>"puraque,"</i> the name given by the Brazilians to
the gymnotus, or electric snake, which had just attacked him.</p>
<p>It is well known that the gymnotus is a kind of eel, with a blackish,
slimy skin, furnished along the back and tail with an apparatus composed
of plates joined by vertical lamell�, and acted on by nerves of
considerable power. This apparatus is endowed with singular electrical
properties, and is apt to produce very formidable results. Some of these
gymnotuses are about the length of a common snake, others are about ten
feet long, while others, which, however, are rare, even reach fifteen or
twenty feet, and are from eight to ten inches in diameter.</p>
<p>Gymnotuses are plentiful enough both in the Amazon and its tributaries;
and it was one of these living coils, about ten feet long, which, after
uncurving itself like a bow, again attacked the diver.</p>
<p>Benito knew what he had to fear from this formidable animal. His clothes
were powerless to protect him. The discharges of the gymnotus, at first
somewhat weak, become more and more violent, and there would come a time
when, exhausted by the shocks, he would be rendered powerless.</p>
<p>Benito, unable to resist the blows, half-dropped upon the sand. His limbs
were becoming paralyzed little by little under the electric influences of
the gymnotus, which lightly touched his body as it wrapped him in its
folds. His arms even he could not lift, and soon his spear escaped him,
and his hand had not strength enough left to pull the cord and give the
signal.</p>
<p>Benito felt that he was lost. Neither Manoel nor his companions could
suspect the horrible combat which was going on beneath them between the
formidable puraque and the unhappy diver, who only fought to suffer,
without any power of defending himself.</p>
<p>And that at the moment when a body—the body of Torres without a
doubt!—had just met his view.</p>
<p>By a supreme instinct of self-preservation Benito uttered a cry. His voice
was lost in the metallic sphere from which not a sound could escape!</p>
<p>And now the puraque redoubled its attacks; it gave forth shock after
shock, which made Benito writhe on the sand like the sections of a divided
worm, and his muscles were wrenched again and again beneath the living
lash.</p>
<p>Benito thought that all was over; his eyes grew dim, his limbs began to
stiffen.</p>
<p>But before he quite lost his power of sight and reason he became the
witness of a phenomenon, unexpected, inexplicable, and marvelous in the
extreme.</p>
<p>A deadened roar resounded through the liquid depths. It was like a
thunder-clap, the reverberations of which rolled along the river bed, then
violently agitated by the electrical discharges of the gymnotus. Benito
felt himself bathed as it were in the dreadful booming which found an echo
in the very deepest of the river depths.</p>
<p>And then a last cry escaped him, for fearful was the vision which appeared
before his eyes!</p>
<p>The corpse of the drowned man which had been stretched on the sand arose!
The undulations of the water lifted up the arms, and they swayed about as
if with some peculiar animation. Convulsive throbs made the movement of
the corpse still more alarming.</p>
<p>It was indeed the body of Torres. One of the suns rays shot down to it
through the liquid mass, and Benito recognized the bloated, ashy features
of the scoundrel who fell by his own hand, and whose last breath had left
him beneath the waters.</p>
<p>And while Benito could not make a single movement with his paralyzed
limbs, while his heavy shoes kept him down as if he had been nailed to the
sand, the corpse straightened itself up, the head swayed to and fro, and
disentangling itself from the hole in which it had been kept by a mass of
aquatic weeds, it slowly ascended to the surface of the Amazon.</p>
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