At that moment the Indian made a sign to the black to cease from his grimaces; and, letting go his hold with one hand, he swung his body wholly upon the other over the fearful abyss.

The recklessness of the action caused a renewed surprise to the spectator standing below, amounting almost to a feeling of awe. Before he had time to reflect upon it, a human voice reached his ears, rising high above the roaring of the torrent. It was the voice of the Indian, who, with outstretched arm, was chaunting a solemn invocation to the spirit of the waters. The words could not be distinguished, but Don Rafael saw, by the muscular play of the man's lips, that he was singing with all the strength of his lungs.

Curiosity might have prompted the dragoon captain to watch these strange proceedings to the end, but the desire of learning something about his route influenced him to act otherwise. He fancied that by waiting longer the opportunity might be lost. The two persons might disappear in a manner as mysterious as was their behaviour.

To attract their attention, therefore, he shouted, and at the top of his voice; but to no purpose. The deafening roar of the cataract hindered him from being heard; and partly, perhaps, the engrossing occupation in which the two men were engaged.

Failing to attract their notice, he resolved upon ascending the side of the ravine, and going round to the place where they were. For that purpose he retraced his steps through the thicket; and after a difficult climb he reached the top of the cliff, at the point where the _ahuehuetes_ formed the arcade over the water. The two personages had disappeared!

Curious as to the object of their ludicrous proceedings, the dragoon climbed up one of the trees, and from a commanding point carefully scrutinised the water underneath. He there perceived nothing more than he had seen already--nothing to justify the strange conduct he had witnessed.

While in the tree, he looked down into the ravine below; first upon the frothing river, and then over the tops of the bushes that grew upon its bank. In an instant he perceived that some of these were in motion, as if some one was making way through the thicket which he had himself traversed.

Presently two men emerged from the cover, and stepped out upon the open bank, at the spot where but the moment before Don Rafael had stood. A glance satisfied him that they were the same he had seen upon the _ahuehuetes_--the negro and Indian.

The sun had already set, but there was still light enough, even in the bottom of the ravine, for Don Rafael to distinguish, not only the movements of the men, but the expression upon their features. Both wore a solemn cast, but those of the negro exhibited evidence of his being influenced by a secret fear.

Near the bank, and where the stream was shallow, a large round boulder of rock stood up out of the water. Towards this the two were directing their steps.

At a signal from the Indian, the negro collected a number of dry sticks; and having piled them upon the flat top of the rock, set them on fire.

In a short time the blaze shot up, and cast its red glare over the stream, tinging with purple flakes the foam of the cataract.

The negro, after kindling the fire, seated himself on the bank, and appeared to contemplate the blaze and its reflections with a feeling of awe. The Indian, on the other hand, threw off his hat, and untwined the plaits of his hair--black as the wing of the raven--whose age he expected to attain. Leaving the long tresses to fall wildly over his shoulders, he walked out into the water, and halted by the side of the rock. The dragoon now saw for the first time a huge sea-sh.e.l.l--a conch--in the hands of the Indian, which had hitherto hung by his side suspended in a string. Placing the conch to his month, he blew several loud, prolonged notes upon it, as if with the intention of arousing the spirit of the waters. Then suffering the sh.e.l.l to fall back upon its string, he commenced leaping around the rock in a sort of grotesque dance, splashing and plunging through the water until the spray rose up and wetted him over the crown of the head.

The whole spectacle was at once ludicrous and imposing. The stoical composure of the negro, who sat perfectly silent upon the bank watching with a solemn air the grotesque capers of his companion--the red light reflected upon the savage figures of the two men--reflected also upon the foaming cataract, which appeared to roll over the cliff like an avalanche of fire--all combined to form a scene in which the ludicrous and the sublime were singularly commingled.

Don Rafael might have desired to witness the _finale_; but time was pressing, and he had a strong motive urging him to proceed upon his journey.

"_Santos Dios_!" cried he, in an impatient tone, "I should like very well to wait and see what pagan divinity these droll savages are invoking; but it will not do to tarry longer here. I must onwards; and to find my way it will be necessary to interrupt their proceedings."

Saying this, the officer raised his voice and shouted "Hola!" with all the strength of his lungs.

The hail was not heeded: it was not heard.

"_Maldito_!" exclaimed he, "I must try some other means of drawing their attention."

A method at once suggested itself; and stooping, the officer took up a handful of small pebbles, and launched them down upon the two adorers of the demon.

So far as drawing their attention went, the means proved efficacious; for the instant that the pebbles fell upon the water, the Indian, with a stroke of his hand, swept the fire from the rock, and the ravine became instantaneously as dark as Erebus. The forms of the two water-worshippers disappeared in the gloom; and Don Rafael found himself alone in the presence of the foaming cataract.

CHAPTER TWELVE.

THE DIADEM.

Chagrined at the result, the traveller had no course left but to return to the place where he had left his horse. He was now in a worse predicament than ever; since it had become dark, and it would be difficult not only to find a path, but to follow it when found. The moon, however, had already risen, or rather had been all the while above the horizon, but hidden by a thick band of c.u.mulus clouds that hung over the west. As the clouds did not cover the whole canopy, and it was likely that the moon would soon be visible, the traveller saw that he had no other resource than to wait: in hopes that by her light he might extricate himself from the difficulty into which his mischances had guided him.

On arriving where he had left his horse, Don Rafael sat down upon a fallen tree; and, lighting a cigar, awaited the appearance of the moon.

He knew he should not have long to wait, for the yellow sheen, which betokened the situation of the luminary of night, was at no great distance from the edge of the cloud.

He had not been seated more than a few seconds, when a singular sound fell upon his ear. It was not the rushing noise of the cascade--for to that he had been accustomed for some time--but a sound that resembled the scream of some wild animal, ending in a hoa.r.s.e and fiercely intoned roaring. He had heard it once or twice before; and although he could tell that it was not the howl of the coyote, he knew not what sort of creature was causing it.

Despite his ignorance of the cause, there was something in the sound that denoted danger; and, instinctively influenced by this idea, the young officer rose from his seat upon the log; and, untying his horse, leaped into the saddle. It was not with the intention of moving away from the spot--for the moon was not visible as yet--but with the knowledge that on horseback he would be the better prepared for any event that might arise. Still further to provide against possible danger, he unbuckled the strap of his carbine, and tried whether the piece was primed and in order. Don Rafael, although young, had seen some military service on the northern frontier of Mexico--where Indian warfare had taught him the wisdom of keeping habitually upon his guard.

Again he heard the wild lugubrious scream rising above the roar of the waters; and perceived that his horse, hearing it also, trembled between his thighs!

Coupling the sound with the strange spectacle to which he had just been a witness, the young officer could not help feeling a slight sensation of fear. He was a Creole, brought up consequently in the midst of ecclesiastical superst.i.tion, scarce less monstrous and absurd than that of pure paganism itself. He had heard in his youth how animals in presence of beings of the other world are seized with a shivering--such as that exhibited at the moment by his own horse--and he could almost fancy that the scene he had just witnessed was some evocation of the Prince of Darkness, to which the lugubrious sounds now reaching him were the response.

But Don Rafael was one of those bold spirits whom fear may visit but not subdue; and he remained immobile in his saddle, without showing any further symptoms of apprehension than by the twitching of his lips against his cigar, the light of which at intervals gleamed like a meteor through the darkness.

While thus patiently waiting the moonlight, the horseman fancied that he heard other sounds, and of a different import. Human voices they appeared to be; and it at once occurred to him, that it might be the two men whom he had disturbed and driven from their incantations. The voices were each moment more distinctly uttered; and it was evident that the speakers were approaching him. He perceived that it was probable they would come out somewhere near where he was stationed; and in order to have the advantage of a preliminary survey, in case they might turn out to be enemies, he drew his horse back under the darker shadow of the trees--placing himself in such a position that he commanded a view of the path.

The voices he heard were in reality those of the Indian and negro or Costal and Clara: for it need scarce be told that it was they who were the heroes of the mysterious spectacle of which Don Rafael had been the sole spectator.

The two worthies, on being interrupted in their pagan ceremony by the shower of pebbles, had given up the performance; and were now threading their way through the thicket to reach the road beyond it.

The Indian was venting his wrath against the unknown personage who had intruded upon their sacred devotions, and who had very probably hindered the Siren of the dishevelled hair from showing herself. The negro appeared to be equally indignant; but his anger was probably only pretended.

"Is it only at the first appearance of a new moon that the Siren shows herself?" inquired Clara, as if the opportunity for seeing her had escaped them.

"Of course," replied Costal, "only then; but if there is a profane person in the neighbourhood--and by profane I mean a _white_--the spirit will not appear."

"Perhaps she is afraid of the Inquisition?" naively suggested the negro.

"Bah! Clara, you're a ninny! Why the devil should you suppose that the powerful divinity of the waters has any fear of long-robed monks? It is they, more likely, who would have cause to tremble in her presence, and prostrate themselves before her."

"_Carrambo_! if she's afraid to show herself before one white man, more reason why she should fear a whole host of monks--who, it must be confessed, are ugly enough to frighten anything."

"May the devil drown the man who interrupted us!" cried Costal, rendered the more indignant by the justice of the negro's reasoning. "A few minutes more, and I am certain the Siren would have showed herself."

"Why did you extinguish the fire so soon? I think, friend Costal, you did wrong in that," remonstrated Clara.

"I did it to hide from the eyes of the profane white man the mystery about to be accomplished. Besides, I knew after what happened there was no chance of her appearing."

"So you really think it was some one who disturbed us?"

"I am sure of it."

"And is that how you account for the shower of stones?"

"Of course."

"By my faith, then," said the negro in a serious tone, "I differ with you in opinion about that."

"You do? And what is your opinion about it?" inquired Costal, stopping and turning his eyes upon his companion.

"I would stake my life upon it," replied the negro, still speaking seriously, "that while you were dancing around the rock, I saw the Siren."