It was the only word that passed his lips.

In fact, it was a _"puraque,"_ the name given by the Brazilians to the gymnotus, or electric snake, which had just attacked him.

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 lamellæ, 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.

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.

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.

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.

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.

And that at the moment when a body--the body of Torres without a doubt!--had just met his view.

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!

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.

Benito thought that all was over; his eyes grew dim, his limbs began to stiffen.

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.

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.

And then a last cry escaped him, for fearful was the vision which appeared before his eyes!

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.

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 hose last breath had left him beneath the waters.

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.

CHAPTER XI

THE CONTENTS OF THE CASE

WHAT WAS it that had happened? A purely physical phenomenon, of which the following is the explanation.

The gunboat Santa Ana, bound for Manaos, had come up the river and passed the bar at Frias.