"And thus," continued Manoel, "supposing the conditions continue favorable, and Torres did not live after he fell into the water, if the decomposition is not modified by circ.u.mstances which we cannot foresee, he will not reappear before three days."

"We have not got three days," answered Benito. "We cannot wait, you know; we must try again, and in some new way."

"What can you do?" answered Manoel.

"Plunge down myself beneath the waters," replied Benito, "and search with my eyes--with my hands."

"Plunge in a hundred times--a thousand times!" exclaimed Manoel. "So be it. I think, like you, that we ought to go straight at what we want, and not struggle on with poles and drags like a blind man who only works by touch. I also think that we cannot wait three days. But to jump in, come up again, and go down again will give only a short period for the exploration. No; it will never do, and we shall only risk a second failure."

"Have you no other plan to propose, Manoel?" asked Benito, looking earnestly at his friend.

"Well, listen. There is what would seem to be a Providential circ.u.mstance that may be of use to us."

"What is that?"

"Yesterday, as we hurried through Manaos, I noticed that they were repairing one of the quays on the bank of the Rio Negro. The submarine works were being carried on with the aid of a diving-dress. Let us borrow, or hire, or buy, at any price, this apparatus, and then we may resume our researches under more favorable conditions."

"Tell Araujo, Fragoso, and our men, and let us be off," was the instant reply of Benito.

The pilot and the barber were informed of the decision with regard to Manoel's project. Both were ordered to go with the four boats and the Indians to the basin of Frias, and there to wait for the two young men.

Manoel and Benito started off without losing a moment, and reached the quay at Manaos. There they offered the contractor such a price that he put the apparatus at their service for the whole day.

"Will you not have one of my men," he asked, "to help you?"

"Give us your foreman and one of his mates to work the air-pump,"

replied Manoel.

"But who is going to wear the diving-dress?"

"I am," answered Benito.

"You!" exclaimed Manoel.

"I intend to do so."

It was useless to resist.

An hour afterward the raft and all the instruments necessary for the enterprise had drifted down to the bank where the boats were waiting.

The diving-dress is well known. By its means men can descend beneath the waters and remain there a certain time without the action of the lungs being in any way injured. The diver is clothed in a waterproof suit of India rubber, and his feet are attached to leaden shoes, which allow him to retain his upright position beneath the surface. At the collar of the dress, and about the height of the neck, there is fitted a collar of copper, on which is screwed a metal globe with a gla.s.s front. In this globe the diver places his head, which he can move about at his ease.

To the globe are attached two pipes; one used for carrying off the air ejected from the lungs, and which is unfit for respiration, and the other in communication with a pump worked on the raft, and bringing in the fresh air. When the diver is at work the raft remains immovable above him; when the diver moves about on the bottom of the river the raft follows his movements, or he follows those of the raft, according to his convenience.

These diving-dresses are now much improved, and are less dangerous than formerly. The man beneath the liquid ma.s.s can easily bear the additional pressure, and if anything was to be feared below the waters it was rather some cayman who might there be met with. But, as had been observed by Araujo, not one of these amphibians had been seen, and they are well known to prefer the black waters of the tributaries of the Amazon. Besides, in case of danger, the diver has always his check-string fastened to the raft, and at the least warning can be quickly hauled to the surface.

Benito, invariably very cool once his resolution was taken, commenced to put his idea into execution, and got into the diving dress. His head disappeared in the metal globe, his hand grasped a sort of iron spear with which to stir up the vegetation and detritus acc.u.mulated in the river bed, and on his giving the signal he was lowered into the stream.

The men on the raft immediately commenced to work the air-pump, while four Indians from the jangada, under the orders of Araujo, gently propelled it with their long poles in the desired direction.

The two pirogues, commanded one by Fragoso, the other by Manoel, escorted the raft, and held themselves ready to start in any direction, should Benito find the corpse of Torres and again bring it to the surface of the Amazon.

CHAPTER X. A CANNON SHOT

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!

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.

Near him was a tangled ma.s.s of reeds and twigs and aquatic plants, all laced together, which a.s.suredly 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.

Hereabouts, thanks to the eddy produced by the prolongation of one of the spurs running out into the stream, the current was absolutely _nil_.

Benito guided his movements by those of the raft, which the long poles of the Indians kept just over his head.

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.

The young man slowly made his way along the bank. With his iron-shod spear he probed the plants and rubbish acc.u.mulated 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.

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.

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.

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.

The pirogues immediately rowed alongside. Manoel, Fragoso, and Araujo came close to him, waiting for him to speak.

"Well?" asked Manoel.

"Still nothing! Nothing!"

"Have you not seen a trace?"

"Not one!"

"Shall I go down now?"

"No, Manoel," answered Benito; "I have begun; I know where to go. Let me do it!"

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.

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."

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.

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.