Impatient to learn all, Mark ran ashore, for by this time it was broad daylight, and hastened into the crater, with an intention to ascend at once to the Summit. As he passed along, he could detect no change whatever on the surface of the Reef; everything lying just as it had been left, and the pigs and poultry were at their usual business of providing for their own wants. Ashes, however, were strewn over the rocks to a depth that left his footprints as distinct as they could have been made in a light snow. Within the crater the same appearances were observed, fully an inch of ashes covering its verdant pastures and the whole garden. This gave Mark very little concern, for he knew that the first rain would wash this drab-looking mantle into the earth, where it would answer all the purposes of a rich dressing of manure.
On reaching the Summit, our young man was enabled to form a better opinion of the vast changes which had been wrought around him, by this sudden elevation of the earth's crust. Everywhere sea seemed to be converted into land, or, at least, into rock. All the white water had disappeared, and in its place arose islands of rock, or mud, or sand. A good deal of the last was to be seen, and some quite near the Reef, as we shall still continue to call the island of the crater. Island, however, it could now hardly be termed. It is true that ribands of water approached it on all sides, resembling creeks, and rivers and small sounds; but, as Mark stood there on the Summit, it seemed to him that it was now possible to walk for leagues, in every direction, commencing at the crater and following the lines of reefs, and rocks, and sands, that had been laid bare by the late upheaving. The extent of this change gave him confidence in its permanency, and the young man had hopes that what had thus been produced by the Providence of God would be permitted to remain, to answer his own benevolent purposes. It certainly made an immense difference in his own situation. The boat could still be used, but it was now possible for him to ramble for hours, if not for days, along the necks, and banks, and hummocks, and swales that had been formed, and that with a dry foot. His limits were so much enlarged as to offer something like a new world to his enterprise and curiosity.
The crater, nevertheless, was apparently about the centre of this new creation. To the south, it is true, the eye could not penetrate more than two or three leagues. A vast, dun-looking cloud, still covered the sea in that direction, veiling its surface far and wide, and mingling with the vapours of the upper atmosphere. Somewhere within this cloud, how far or how near from him he knew not, Mark made no doubt a new outlet to the pent forces of the inner earth was to be found, forming another and an active crater for the exit of the fires beneath. Geology was a science that had not made its present progress in the day of Mark Woolston, but his education had been too good to leave him totally without a theory for what had happened. He supposed that the internal fires had produced so much gas, just beneath this spot, as to open crevices at the bottom of the ocean, through which water had flowed in sufficient quantities to create a vast body of steam, which steam had been the immediate agent of lifting so much of the rock and land, and of causing the earthquake. At the same time, the internal fires had acted in concert; and following an opening, they had got so near the surface as to force a chimney for their own exit, in the form of this new crater, of the existence of which, from all the signs to the southward, Mark did not entertain the smallest doubt.
This theory may have been true, in whole or in part, or it may have been altogether erroneous. Such speculations seldom turn out to be minutely accurate. So many unknown causes exist in so many unexpected forms, as to render precise estimates of their effects, in cases of physical phenomena, almost as uncertain as those which follow similar attempts at any analysis of human motives and human conduct. The man who has been much the subject of the conjectures and opinions of his fellow-creatures, in this way, must have many occasions to wonder, and some to smile, when he sees how completely those around him misjudge his wishes and impulses. Although formed of the same substance, influenced by the same selfishness, and governed by the same passions, in nothing do men oftener err than in this portion of the exercise of their intellects. The errors arise from one man's rigidly judging his fellow by himself, and that which he would do he fancies others would do also. This rule would be pretty safe, could we always penetrate into the wants and longings of others, which quite as often fail to correspond closely with our own, as do their characters, fortunes, and hopes.
At first sight, Mark had a good deal of difficulty in understanding the predominant nature of the very many bodies of water that were to be seen on every side of him. On the whole, there still remained almost as much of one element as of the other, in the view; which of itself, however, was a vast change from what had previously been the condition of the shoals. There were large bodies of water, little lakes in extent, which it was obvious enough must disappear under the process of evaporation, no communication existing between them and the open ocean. But, on the other hand, many of these sheets were sounds, or arms of the sea, that must always continue, since they might be traced, far as eye could reach, towards the mighty Pacific. Such, Mark was induced to believe, was the fact with the belt of water that still surrounded, or nearly surrounded the Reef; for, placed where he was, the young man was unable to ascertain whether the latter had, or had not, at a particular point, any land communication with an extensive range of naked rock, sand, mud, and deposit, that stretched away to the westward, for leagues. In obvious connection with this broad reach of what might be termed bare ground, were Guano and Loam Islands; neither of which was an island any longer, except as it was a part of the whole formation around it. Nevertheless, our young man was not sorry to see that the channel around the Reef still washed the bases of both those important places of deposit, leaving it in his power to transport their valuable manures by means of the raft, or boat.
The situation of the ship next became the matter of Mark's most curious and interested investigation. She was clearly afloat, and the basin in which she rode had a communication on each side, of it, with the sound, or inlet, that still encircled the Reef. Descending to the shore, our young mariner got into the dingui, and pulled out round the vessel, to make a more minute examination. So very limpid was the water of that sea, it was easy enough to discern a bright object on the bottom, at a depth of several fathoms. There were no streams in that part of the world to pour their deposits into the ocean, and air itself is scarce more transparent than the pure water of the ocean, when unpolluted with any foreign substances. All it wants is light, to enable the eye to reach into it's mysteries for a long way. Mark could very distinctly perceive the sand beneath the Rancocus' keel, and saw that the ship still floated two or three feet clear of the bottom. It was near high water, however; and there being usually a tide of about twenty inches, it was plain enough that, on certain winds, the good old craft would come in pretty close contact with the bottom. All expectation of ever getting the vessel out of the basin must now be certainly abandoned, since she lay in a sort of cavity, where the water was six or eight feet deeper than it was within a hundred yards on each side of her.
Having ascertained these facts, Mark provided himself with a fowling-piece, provisions, &c., and set out to explore his newly acquired territories on foot. His steps were first directed to the point where it appeared to the eye, that the vast range of dry land to the westward, extending both north and south, had become connected with the Reef. If such connection existed at all, it was by two very narrow necks of rock, of equal height, both of which had come up out of the water under the late action, which action had considerably altered and extended the shores of Crater Island. Sand appeared in various places along these shores, now; whereas, previously to the earthquake, they had everywhere been nearly perpendicular rocks.
Mark was walking, with an impatient step, towards the neck just mentioned, and which was at no great distance from the ship-yard, when his eye was attracted towards a sandy beach of several acres in extent, that spread itself along the margin of the rocks, as clear from every impurity as it was a few hours before, when it had been raised from out of the bosom of the ocean. To him, it appeared that water was trickling through this sand, coming from beneath the lava of the Reef. At first, he supposed it was merely the remains of some small portion of the ocean that had penetrated to a cavity within, and which was now trickling back through the crevices of the rocks, to find its level, under the great law of nature. But it looked so pleasant to see once more water of any sort coming upwards from the earth, that the young man jumped down upon the sands, and hastened to the spot for further inquiry. Scooping up a little of the water in the hollow of his hand, he found it sweet, soft, and deliciously cool. Here was a discovery, indeed! The physical comfort for which he most pined was thus presented to him, as by a direct gift from heaven; and no miser who had found a hoard of hidden gold, could have felt so great pleasure, or a tenth part of the gratitude, of our young hermit, if hermit we may call one who did not voluntarily seek his seclusion from the world, and who worshipped God less as a penance than from love and adoration.
Before quitting this new-found treasure, Mark opened a cavity in the sand to receive the water, placing stone around it to make a convenient and clean little basin. In ten minutes this place was filled with water almost as limpid as air, and every way as delicious as the palate of man could require. The young man could scarce tear himself away from the spot, but fearful of drinking too much he did so, after a time. Before quitting the spring, however, he placed a stone of some size at a gap in the rock, a precaution that completely prevented the hogs, should they stroll that way, from descending to the beach and defiling the limpid basin. As soon as he had leisure, Mark resolved to sink a barrel in the sand, and to build a fence around it; after which the stock might descend and drink at a pool he should form below, at pleasure.
Mark proceeded. On reaching the narrowest part of the 'Neck,' he found that the rocks did not meet, but the Reef still remained an island. The channel that separated the two points of rock was only about twenty feet wide, however, though it was of fully twice that depth. The young man found it necessary to go back to the ship-yard (no great distance, by the way), and to bring a plank with which to make a bridge. This done, he passed on to the newly emerged territory. As might have been expected, the rocks were found tolerably well furnished with fish, which had got caught in pools and crevices when the water flowed into the sea; and what was of still more importance, another and a much larger spring of fresh water was found quite near the bridge, gushing through a deposit of sand of some fifteen or twenty acres in extent. The water of this spring had run down into a cavity, where it had already formed a little lake of some two acres in surface, and whence it was already running into the sea, by overflowing its banks. These two discoveries induced Mark to return to the Reef again, in quest of the stock. After laying another-plank at his bridge, he called every creature he had over into the new territory; for so great was the command he had obtained over even the ducks, that all came willingly at his call. As for Kitty, she was never more happy than when trotting at his side, accompanying him in his walks, like a dog.