Disappointed, and in a slight degree disheartened, Mulford turned, and swam in the direction of the sinking star. He now looked anxiously for the boat. It was time that it came more plainly into view, and a new source of anxiety beset him, as he could discover no signs of its vicinity. Certain that he was on the course, after making a due allowance for the direction of the wind, the stout-hearted young man swam on. He next determined not to annoy himself by fruitless searches, or vain regrets, but to swim steadily for a certain time, a period long enough to carry him a material distance, ere he again looked for the object of his search.

For twenty minutes longer did that courageous and active youth struggle with the waste of waters, amid the obscurity and solitude of midnight. He now believed himself near a mile from the wreck, and the star which had so long served him for a beacon was getting near to the horizon. He took a new observation of another of the heavenly bodies nigh it, to serve him in its stead when it should disappear altogether, and then he raised himself in the water, and looked about again for the boat. The search was in vain. No boat was very near him, of a certainty, and the dreadful apprehension began to possess his mind, of perishing uselessly in that waste of gloomy waters. While thus gazing about him, turning his eyes in every quarter, hoping intently to catch some glimpse of the much-desired object in the gloom, he saw two dark, pointed objects, that resembled small stakes, in the water within twenty feet of him. Mulford knew them at a glance, and a cold shudder passed through his frame, as he recognised them. They were, out of all question, the fins of an enormous shark; an animal that could not measure less than eighteen or twenty feet in length.

It is scarcely necessary to say, that when our young mate discovered the proximity of this dangerous animal, situated as he was, he gave himself up for lost. He possessed his knife, however, and had heard of the manner in which even sharks were overcome, and that too in their own element, by the skilful and resolute. At first, he was resolved to make one desperate effort for life, before he submitted to a fate as horrible as that which now menaced him; but the movements of his dangerous neighbour induced him to wait. It did not approach any nearer, but continued swimming back and fro, on the surface of the water, according to the known habits of the fish, as if watching his own movements. There being no time to be wasted, our young mate turned on his face, and began again to swim in the direction of the setting star, though nearly chilled by despair. For ten minutes longer did he struggle on, beginning to feel exhaustion, however, and always accompanied by those two dark, sharp and gliding fins. There was no difficulty in knowing the position of the animal, and Mulford's eyes were oftener on those fins than on the beacon before him. Strange as it may appear, he actually became accustomed to the vicinity of this formidable creature, and soon felt his presence a sort of relief against the dreadful solitude of his situation. He had been told by seamen of instances, and had once witnessed a case himself, in which a shark had attended a swimming man for a long distance, either forbearing to do him harm, from repletion, or influenced by that awe which nature has instilled into all of the inferior, for the highest animal of the creation. He began to think that he was thus favoured, and really regarded the shark as a friendly neighbour, rather than as a voracious foe. In this manner did the two proceed, nearly another third of a mile, the fins sometimes in sight ahead, gliding hither and thither, and sometimes out of view behind the swimmer, leaving him in dreadful doubts as to the movements of the fish, when Mulford suddenly felt something hard hit his foot. Believing it to be the shark, dipping for his prey, a slight exclamation escaped him. At the next instant both feet hit the unknown substance again, and he stood erect, the water no higher than his waist! Quick, and comprehending everything connected with the sea, the young man at once understood that he was on a part of the reef where the water was so shallow as to admit of his wading.

Mulford felt that he had been providentially rescued from death. His strength had been about to fail him, when he was thus led, unknown to himself, to a spot where his life might yet be possibly prolonged for a few more hours, or days. He had leisure to look about him, and to reflect on what was next to be done. Almost unwittingly, he turned in quest of his terrible companion, in whose voracious mouth he had actually believed himself about to be immolated, a few seconds before. There the two horn-like fins still were, gliding about above the water, and indicating the smallest movement of their formidable owner. The mate observed that they went a short distance ahead of him, describing nearly a semi-circle, and then returned, doing the same thing in his rear, repeating the movements incessantly, keeping always on his right. This convinced him that shoaler water existed on his left hand, and he waded in that direction, until he reached a small spot of naked rock.

For a time, at least, he was safe! The fragment of coral on which the mate now stood, was irregular in shape, but might have contained a hundred feet square in superficial measurement, and was so little raised above the level of the water as not to be visible, even by daylight, at the distance of a hundred yards. Mulford found it was perfectly dry, however, an important discovery to him, as by a close calculation he had made of the tides, since quitting the Dry Tortugas, he knew it must be near high water. Could he have even this small portion of bare rock secure, it made him, for the moment, rich as the most extensive landholder living. A considerable quantity of sea-weed had lodged on the rock, and, as most of this was also quite dry, it convinced the young sailor that the place was usually bare. But, though most of this sea-weed was dry, there were portions of the more recent accessions there that still lay in, or quite near to the water, which formed exceptions. In handling these weeds, in order to ascertain the facts, Mulford caught a small shell-fish, and finding it fresh and easy to open, he swallowed it with the eagerness of a famishing man. Never had food proved half so grateful to him as that single swallow of a very palatable testaceous animal. By feeling further, he found several others of the same family, and made quite as large a meal, as, under the circumstances, was probably good for him. Then, grateful for his escape, but overcome by fatigue, he hastily arranged a bed of sea-weed, drew a portion of the plant over his body, to keep him warm, and fell into a deep sleep that lasted for hours.

Mulford did not regain his consciousness until the rays of the rising sun fell upon his eye-lids, and the genial warmth of the great luminary shed its benign influence over his frame. At first his mind was confused, and it required a few seconds to bring a perfect recollection of the past, and a true understanding of his real situation. They came, however, and the young man moved to the highest part of his little domain, and cast an anxious, hurried look around in quest of the wreck. A knowledge of the course in which he had swum, aided by the position of the sun, told him on what part of the naked waste to look for the object he sought. God had not yet forsaken them! There was the wreck; or, it might be more exact to say, there were those whom the remaining buoyancy of the wreck still upheld from sinking into the depths of the gulf. In point of fact, but a very little of the bottom of the vessel actually remained above water, some two or three yards square at most, and that little was what seamen term nearly awash. Two or three hours must bury that small portion of the still naked wood beneath the surface of the sea, though sufficient buoyancy might possibly remain for the entire day still to keep the living from death.

There the wreck was, however, yet floating; and, though not visible to Mulford, with a small portion of it above water. He saw the four persons only; and what was more, they saw him. This was evident by Jack Tier's waving his hat like a man cheering. When Mulford returned this signal, the shawl of Rose was tossed into the air, in a way to leave no doubt that he was seen and known. The explanation of this early recognition and discovery of the young mate was very simple. Tier was not asleep when Harry left the wreck, though, seeing the importance of the step the other was taking, he had feigned to be so. When Rose awoke, missed her lover, and was told what had happened, her heart was kept from sinking by his encouraging tale and hopes. An hour of agony had succeeded, nevertheless, when light returned and no Mulford was to be seen. The despair that burst upon the heart of our heroine was followed by the joy of discovering him on the rock.

It is scarcely necessary to say how much the parties were relieved on ascertaining their respective positions. Faint as were the hopes of each of eventual delivery, the two or three minutes that succeeded seemed to be minutes of perfect happiness. After this rush of unlooked-for joy, Mulford continued his intelligent examination of surrounding objects.

The wreck was fully half a mile from the rock of the mate, but much nearer to the reef than it had been the previous night. “Could it but ground on the rocks,” thought the young man, “it would be a most blessed event.” The thing was possible, though the first half hour of his observations told him that its drift was in the direction of the open passage so often named, rather than toward the nearest rocks. Still, that drift brought Rose each minute nearer and nearer to himself again. In looking round, however, the young man saw the boat. It was a quarter of a mile distant, with open water between them, apparently grounded on a rock, for it was more within the reef than he was himself. He must have passed it in the dark, and the boat had been left to obey the wind and currents, and to drift to the spot where it then lay.

Mulford shouted aloud when he saw the boat, and at once determined to swim in quest of it, as soon as he had collected a little refreshment from among the sea-weed. On taking a look at his rock by daylight, he saw that its size was quadrupled to the eye by the falling of the tide, and that water was lying in several of the cavities of its uneven surface. At first he supposed this to be sea-water, left by the flood; but, reflecting a moment, he remembered the rain, and hoped it might be possible that one little cavity, containing two or three gallons of the fluid, would turn out to be fresh. Kneeling beside it, he applied his lips in feverish haste, and drank the sweetest draught that had ever passed his lips. Slaking his thirst, which had begun again to be painfully severe, he arose with a heart overflowing with gratitude—could he only get Rose to that narrow and barren rock, it would seem to be an earthly paradise. Mulford next made his scanty, but, all things considered, sufficient meal, drank moderately afterward, and then turned his attention and energies toward the boat, which, though now aground and fast, might soon float on the rising tide, and drift once more beyond his reach. It was his first intention to swim directly for his object; but, just when about to enter the water, he saw with horror the fins of at least a dozen sharks, which were prowling about in the deeper water of the reef, and almost encircling his hold. To throw himself in the midst of such enemies would be madness, and he stopped to reflect, and again to look about him. For the first time that morning, he took a survey of the entire horizon, to see if anything were in sight; for, hitherto, his thoughts had been too much occupied with Rose and her companions, to remember anything else. To the northward and westward he distinctly saw the upper sails of a large ship, that was standing on a wind to the northward and eastward. As there was no port to which a vessel of that character would be likely to be bound in the quarter of the Gulf to which such a course would lead, Mulford at once inferred it was the sloop-of-war, which, after having examined the islets, at the Dry Tortugas, and finding them deserted, was beating up, either to go into Key West, or to pass to the southward of the reef again, by the passage through which she had come as lately as the previous day. This was highly encouraging; and could he only get to the boat, and remove the party from the wreck before it sunk, there was now every prospect of a final escape.