Chapter Seven.

En Route for the North Pole.

The destruction of the wreck having been effected, the Flying Fish moved a few miles northward until she reached a small level sandy patch affording a good berth for the night, and there she was once more placed upon the ground and anchored.

Nothing whatever occurred to disturb the repose of the travellers; and, after passing a tranquil night, they assembled at the breakfast table punctually at eight o’clock on the following morning. An hour later, having finished their meal, the quartette rose, and made their way to the pilot-house, where preparations were at once commenced for an ascent to the surface. On this occasion the professor being anxious that the other members of the party should become conversant with the method of handling the ship, the baronet placed himself at the tiller—from which post the entire apparatus controlling the movements of the vessel could be reached—and, with von Schalckenberg at his elbow to correct him in the event of a possible mistake, the ascent was begun. This, from prudential motives, was slowly accomplished, and at a distance of five fathoms from the surface a pause was made for the purpose of taking a good look round and thus avoiding all possibility of inflicting damage on passing ships in the act of breaking water. It was well that this precaution was observed; for their first glance revealed to them the bottom of a large steamer close at hand and coming rapidly straight toward them; and had the Flying Fish continued to rise she would have broken water directly under the stranger’s bows. As it was, by backing astern a few yards they gave the steamer good room to pass; and it was both interesting and novel to see the great mass go plunging heavily past with the long sea-grass waving and trailing from her bottom, and the great propeller spinning rapidly round, now completely immersed, and anon lifted almost entirely out of the water. Once clear of her, the Flying Fish sank to a depth of ten fathoms, and after a ten-mile run at full speed, once more paused to reconnoitre. This time the sea was clear for at least a mile in every direction—which was as far as they could see in the then condition of the water—and they at once rose to the surface.

The horizon proved to be clear in every direction save to the southward, in which quarter the upper spars of the steamer they had so lately encountered were still visible. The wind was blowing a moderate breeze from S.S.E.—almost a dead fair wind for the Flying Fish—the weather also was delightfully fine and clear; it was therefore promptly resolved to take to the air once more and thus wing their way northward.

The valves of the air-chambers were accordingly thrown open to their full extent, when, with a screaming roar, the highly compressed air at once rushed forth, and in less than half a minute the huge bulk of the ship was lying poised as lightly as an air-bubble on the surface of the heaving water. The main vapour-valve was then cautiously opened, and a partial vacuum produced, when, as easily as a sea-bird, the Flying Fish rose at once into the air. The engines were next turned ahead, the helm adjusted, and the northward journey was fairly begun.

The wind was blowing at the rate of about fifteen miles an hour, and nearly dead fair; the engines were therefore set so as just to turn round and no more; this gave the ship a speed of about twelve knots through the air, which, added to the rate of the wind, gave a total speed of twenty-seven knots over the ground—or rather over, the water—and at this pace they calculated that, after making the necessary allowance in their course for the set of the wind, they would reach the Irish coast, in the vicinity of Cape Clear, at about five o’clock the next morning. Their reason for not travelling faster was that, as the baronet said, they were on a pleasure cruise, and having been pent up inside the hull for fully thirty-six hours, they felt that a few hours in the open air would be an acceptable change.

They pursued their flight throughout the day at an altitude of only a thousand feet above the sea, except when they encountered a ship—which happened only once during the hours of daylight—and when this occurred they rose, on the instant of sighting her, to the highest attainable distance, in pursuance of their resolve to attract as little attention as possible, descending again to their former level as soon as they had passed beyond her range of vision. At this latter elevation they were able to enjoy to the full the health-giving properties of the pure sea-breeze, and to revel in a prospect—though it was only that of the restless sea—of nearly forty nautical miles on every side; the horizon, that is to say, forming a circle of little less than eighty miles diameter round about them. And though it may be hastily thought that, with a sea bare of craft there was little or nothing to interest the travellers, this was by no means the case; for at their height the water was clear and transparent for a long distance below the surface, and the gambols of the fish, of which there were great numbers visible, including several schools of porpoises and a solitary whale, could be seen distinctly, affording a most interesting sight; and when they grew tired of this they promenaded the spacious deck, or lounged about in chairs, smoking their cigars or pipes, and discussing with much animation their future prospects. And now, for the first time, a fact in connection with the automatic balancing apparatus brought itself under their notice. It was this. They found that, let them walk about the ship where and as much as they chose, the balance of the ship always remained perfect; but the little jets of air which, at their every movement, were admitted into the hull to maintain its equilibrium, soon had a perceptible influence on the vessel’s buoyancy, causing her to slowly but steadily descend toward the surface of the sea, thus necessitating periodic visits to the pilot-house to renew the vacuum. This set the professor’s brain to work, and by nightfall he succeeded—with the aid of a second barometer having a small piece of highly magnetised steel floating on the top of the mercurial column, and a couple of magnetised steel bars—in constructing a somewhat rude but thoroughly efficient apparatus for automatically maintaining the ship at any desired height, unaffected by the movements, be they few or many, of those on board.

By the time that this apparatus had been fixed, and subjected to the test of an hour’s conscientious walking fore and aft the deck by the entire party, the dinner-hour had arrived, and they retired below with such appetites as only a day’s exposure to the tonic effects of a sea-breeze—minus all uncomfortable motion—could produce. The fullest justice was consequently done to the meal, after which they made their way once more to the deck, and there, under a brilliant star-lit sky, gave themselves up to the soothing influence of the weed and the renewed enjoyment of their novel position. Midnight found them quite ready for their state-rooms, and at that hour they accordingly retired; the professor first of all, as a matter of precaution, increasing the ship’s altitude to four thousand feet above the sea-level, and then paying a visit of inspection to the engine-room. Matters were found to be all right there; the engines were working smoothly and noiselessly, the bearings were quite cool, and the automatic feed was doing its work to perfection. The ship, then, being at such a height as to be clear of all danger, and steering herself in the required direction, with all the machinery in perfect working order, the weather also being fine and wearing a settled aspect, von Schalckenberg told himself that there was not the slightest necessity for the maintenance of a look-out, and he therefore also retired. A quarter of an hour later the whole of the crew were sunk in profound repose, and the Flying Fish, left to herself, was leisurely wending her way northward at a height of nearly a mile above the earth’s surface.

The first of the quartette to put in an appearance on deck next morning was the professor, who was awakened just as day was breaking by the faint sound of a steam whistle. Springing hastily from his very comfortable couch, he rushed up the companion way and into the open air, without even pausing to don his nether garments. Springing to the guard rail he looked around and below him, and the half-formed fear that something had gone amiss, and that the ship was in danger, was at once dissipated. He saw that the Flying Fish was moving rapidly along with the land beneath her, the breeze having freshened during the night, whilst still blowing from the same quarter, causing them to reach the Irish coast sooner than had been anticipated. The mercury stood at the same height in the tube as it had done when they retired to rest on the preceding night; the ship had consequently maintained her approximate height above the sea-level, the only variation being that due to the greater or lesser density of the atmosphere; which was eminently satisfactory, as it showed that the professor’s hastily constructed apparatus for maintaining an uniform level had been faithfully performing its duty.