What had become of the ten missing men? Had their bodies been carried out to sea?

We searched all along the coast, into the creeks, and between the outlying rocks, but in vain. Nothing was to be found, no traces of a camp, not even the vestiges of a landing.

"Their boat," said William Guy, "must have been struck by a drifting iceberg. The rest of Hearne's companions have been drowned, and only these three bodies have come ashore, lifeless."

"But," asked the boatswain, "how is the state the boat is in to be explained?"

"And especially," added West, "the disappearance of all the iron?"

"Indeed," said I, "it looks as though every bit had been violently torn off."

Leaving the Paracuta in the charge of two men, we again took our way to the interior, in order to extend our search over a wider expanse.

As we were approaching the huge mound the mist cleared away, and the form stood out with greater distinctness. It was, as I have said, almost that of a sphinx, a dusky-hued sphinx, as though the matter which composed it had been oxidized by the inclemency of the polar climate.

And then a possibility flashed into my mind, an hypothesis which explained these astonishing phenomena.

"Ah!" I exclaimed, "a loadstone! that is it! A magnet with prodigious power of attraction!"

I was understood, and in an instant the final catastrophe, to which Hearne and his companions were victims, was explained with terrible clearness.

The Antarctic Sphinx was simply a colossal magnet. Under the influence of that magnet the iron bands of the Halbrane's boat had been torn out and projected as though by the action of a catapult. This was the occult force that had irresistibly attracted everything made of iron on the Paracuta. And the boat itself would have shared the fate of the Halbrane's boat had a single bit of that metal been employed in its construction. Was it, then, the proximity of the magnetic pole that produced such effects?

At first we entertained this idea, but on reflection we rejected it.

At the place where the magnetic meridians cross, the only phenomenon produced is the vertical position of the magnetic needle in two similar points of the terrestrial globe. This phenomenon, already proved by observations made on the spot, must be identical in the Antarciic regions.

Thus, then, there did exist a magnet of prodigious intensity in the zone of attraction which we had entered. Under our eyes one of those surprising effects which had hitherto been classed among fables was actually produced.

The following appeared to me to be the true explanation.

The Trade-winds bring a constant succession of clouds or mists in which immense quantities of electricity not completely exhausted by storms, are stored. Hence there exists a formidable accumulation of electric fluid at the poles, and it flows towards the land in a permanent stream.

From this cause come the northern and southern auroras, whose luminous splendours shine above the horizon, especially during the long polar night, and are visible even in the temperate zones when they attain theix maximum of culmination.

These continuous currents at the poles, which bewilder our compasses, must possess an extraordinary influence. And it would suffice that a block of iron should be subjected to their action for it to be changed into a magnet of power proportioned to the intensity of the current, to the number of turns of the electric helix, and to the square root of the diameter of the block of magnetized iron. Thus, then, the bulk of the sphinx which upreared its mystic form upon this outer edge of the southern lands might be calculated by thousands of cubic yards.

Now, in order that the current should circulate around it and make a magnet of it by induction, what was required? Nothing but a metallic lode, whose innumerable windings through the bowels of the soil should be connected subterraneously at the base of the block.

It seemed to me also that the place of this block ought to be in the magnetic axis, as a sort of gigantic calamite, from whence the imponderable fluid whose currents made an inexhaustible accumulator set up at the confines of the world should issue.