Cyrus Harding and his companions slept like innocent marmots in the cave which the jaguar had so politely left at their disposal.

At sunrise all were on the shore at the extremity of the promontory, and their gaze was directed towards the horizon, of which two-thirds of the circumference were visible. For the last time the engineer could ascertain that not a sail nor the wreck of a ship was on the sea, and even with the telescope nothing suspicious could be discovered.

There was nothing either on the shore, at least, in the straight line of three miles which formed the south side of the promontory, for beyond that, rising ground had the rest of the coast, and even from the extremity of the Serpentine Peninsula Claw Cape could not be seen.

The southern coast of the island still remained to be explored. Now should they undertake it immediately, and devote this day to it?

This was not included in their first plan. In fact, when the boat was abandoned at the sources of the Mercy, it had been agreed that after having surveyed the west coast, they should go back to it, and return to Granite House by the Mercy. Harding then thought that the western coast would have offered refuge, either to a ship in distress, or to a vessel in her regular course; but now, as he saw that this coast presented no good anchorage, he wished to seek on the south what they had not been able to find on the west.

Gideon Spilett proposed to continue the exploration, that the question of the supposed wreck might be completely settled, and he asked at what distance Claw Cape might be from the extremity of the peninsula.

"About thirty miles," replied the engineer, "if we take into consideration the curvings of the coast."

"Thirty miles!" returned Spilett. "That would be a long day's march. Nevertheless, I think that we should return to Granite House by the south coast."

"But," observed Herbert, "from Claw Cape to Granite House there must be at least another ten miles.

"Make it forty miles in all," replied the engineer, "and do not hesitate to do it. At least we should survey the unknown shore, and then we shall not have to begin the exploration again."

"Very good," said Pencroft. "But the boat?"

"The boat has remained by itself for one day at the sources of the Mercy," replied Gideon Spilett; "it may just as well stay there two days! As yet, we have had no reason to think that the island is infested by thieves!"

"Yet," said the sailor, "when I remember the history of the turtle, I am far from confident of that."

"The turtle! the turtle!" replied the reporter. "Don't you know that the sea turned it over?"

"Who knows?" murmured the engineer.

"But,--" said Neb.

Neb had evidently something to say, for he opened his mouth to speak and yet said nothing.

"What do you want to say, Neb?" asked the engineer.

"If we return by the shore to Claw Cape," replied Neb, "after having doubled the Cape, we shall be stopped--"

"By the Mercy! of course," replied Herbert, "and we shall have neither bridge nor boat by which to cross."

"But, captain," added Pencroft, "with a few floating trunks we shall have no difficulty in crossing the river."

"Never mind," said Spilett, "it will be useful to construct a bridge if we wish to have an easy access to the Far West!"

"A bridge!" cried Pencroft. "Well, is not the captain the best engineer in his profession? He will make us a bridge when we want one. As to transporting you this evening to the other side of the Mercy, and that without wetting one thread of your clothes, I will take care of that. We have provisions for another day, and besides we can get plenty of game. Forward!"

The reporter's proposal, so strongly seconded by the sailor, received general approbation, for each wished to have their doubts set at rest, and by returning by Claw Cape the exploration would he ended. But there was not an hour to lose, for forty miles was a long march, and they could not hope to reach Granite House before night.

At six o'clock in the morning the little band set out. As a precaution the guns were loaded with ball, and Top, who led the van, received orders to beat about the edge of the forest.

From the extremity of the promontory which formed the tail of the peninsula the coast was rounded for a distance of five miles, which was rapidly passed over, without even the most minute investigations bringing to light the least trace of any old or recent landings; no debris, no mark of an encampment, no cinders of a fire, nor even a footprint!

From the point of the peninsula on which the settlers now were their gaze could extend along the southwest. Twenty-five miles off the coast terminated in the Claw Cape, which loomed dimly through the morning mists, and which, by the phenomenon of the mirage, appeared as if suspended between land and water.

Between the place occupied by the colonists and the other side of the immense bay, the shore was composed, first, of a tract of low land, bordered in the background by trees; then the shore became more irregular, projecting sharp points into the sea, and finally ended in the black rocks which, accumulated in picturesque disorder, formed Claw Cape.

Such was the development of this part of the island, which the settlers took in at a glance, while stopping for an instant.

"If a vessel ran in here," said Pencroft, "she would certainly be lost. Sandbanks and reefs everywhere! Bad quarters!"

"But at least something would be left of the ship," observed the reporter.

"There might be pieces of wood on the rocks, but nothing on the sands," replied the sailor.

"Why?"

"Because the sands are still more dangerous than the rocks, for they swallow up everything that is thrown on them. In a few days the hull of a ship of several hundred tons would disappear entirely in there!"

"So, Pencroft," asked the engineer, "if a ship has been wrecked on these banks, is it not astonishing that there is now no trace of her remaining?"

"No, captain, with the aid of time and tempest. However, it would be surprising, even in this case, that some of the masts or spars should not have been thrown on the beach, out of reach of the waves."

"Let us go on with our search, then," returned Cyrus Harding.

At one o'clock the colonists arrived at the other side of Washington Bay, they having now gone a distance of twenty miles.

They then halted for breakfast.

Here began the irregular coast, covered with lines of rocks and sandbanks. The long sea-swell could be seen breaking over the rocks in the bay, forming a foamy fringe. From this point to Claw Cape the beach was very narrow between the edge of the forest and the reefs.

Walking was now more difficult, on account of the numerous rocks which encumbered the beach. The granite cliff also gradually increased in height, and only the green tops of the trees which crowned it could be seen.

After half an hour's rest, the settlers resumed their journey, and not a spot among the rocks was left unexamined. Pencroft and Neb even rushed into the surf whenever any object attracted their attention. But they found nothing, some curious formations of the rocks having deceived them. They ascertained, however, that eatable shellfish abounded there, but these could not be of any great advantage to them until some easy means of communication had been established between the two banks of the Mercy, and until the means of transport had been perfected.

Nothing therefore which threw any light on the supposed wreck could be found on this shore, yet an object of any importance, such as the hull of a ship, would have been seen directly, or any of her masts and spans would have been washed on shore, just as the chest had been, which was found twenty miles from here. But there was nothing.

Towards three o'clock Harding and his companions arrived at a snug little creek. It formed quite a natural harbor, invisible from the sea, and was entered by a narrow channel.

At the back of this creek some violent convulsion had torn up the rocky border, and a cutting, by a gentle slope, gave access to an upper plateau, which might be situated at least ten miles from Claw Cape, and consequently four miles in a straight line from Prospect Heights. Gideon Spilett proposed to his companions that they should make a halt here. They agreed readily, for their walk had sharpened their appetites; and although it was not their usual dinner-hour, no one refused to strengthen himself with a piece of venison. This luncheon would sustain them until their supper, which they intended to take at Granite House. In a few minutes the settlers, seated under a clump of fine sea-pines, were devouring the provisions which Neb produced from his bag.

This spot was raised from fifty to sixty feet above the level of the sea. The view was very extensive, but beyond the cape it ended in Union Bay. Neither the islet nor Prospect Heights was visible, and could not be from thence, for the rising ground and the curtain of trees closed the northern horizon.

It is useless to add that notwithstanding the wide extent of sea which the explorers could survey, and though the engineer swept the horizon with his glass, no vessel could be found.

The shore was of course examined with the same care from the edge of the water to the cliff, and nothing could be discovered even with the aid of the instrument.

"Well," said Gideon Spilett, "it seems we must make up our minds to console ourselves with thinking that no one will come to dispute with us the possession of Lincoln Island!"

"But the bullet," cried Herbert. "That was not imaginary, I suppose!"

"Hang it, no!" exclaimed Pencroft, thinking o............