“‘Nary a qualm,’ as our cousins, the Yankees, would say,” answered Mildmay, cheerfully; “only, remember this, we must take the whole onus and responsibility of the act upon our own shoulders; we must show no colours—unless you feel disposed to sport a ‘Jolly Roger’ for this occasion only. What I particularly mean is, that we must take care not to betray our nationality, and so involve Great Britain in a difficulty with Russia. So long as that contingency is avoided, I shall be ready to become a pirate of as deep a dye as you please.”

“We will take whatever precautions you may deem necessary in that respect,” answered Sir Reginald; “in fact, I thought it was quite understood by us all that every such precaution would be taken, or I would have especially mentioned the matter. And now, Professor, as to the disposal of Vasilovich—when we have caught him. Your idea, I believe, is to hand him over to the authorities aboard the convict-ship, in place of Colonel Sziszkinski; but will the authorities accept him, think you?”

“Yes,” said the professor, “I believe they will. So long as they are able to account satisfactorily at Sakhalien for the full number of convicts placed in their charge, I do not think they will care whether one of them declares himself to be Count Vasilovich, or not; they will simply assign to him the number which Colonel Sziszkinski now bears, and that will end the matter. If not, we must maroon the fellow upon some spot from which it will be practically impossible for him to escape, as he is altogether too wicked a man to be permitted the opportunity to perpetrate further wrong.”

“Oh, we will find a means of satisfactorily disposing of the fellow, never fear,” rejoined Sir Reginald. “And now, our plan of campaign being complete, when do we start? To-night?”

“That is for you to say,” answered the professor. “So far as the capture of Vasilovich is concerned, if we arrive within sight of his château by nightfall, or in time to berth the Flying Fish in his park with the last of the daylight, we shall be quite early enough. And if the weather happens to remain calm, as it is at present, we can accomplish the run from here to Saint Petersburg in eight hours; while, with a moderately fresh breeze against us, we can do the distance in about nine and a half hours. But we must not forget that Saint Petersburg time is two hours and five minutes fast on Greenwich time, and we must make our dispositions accordingly. Taking everything into consideration, I am of opinion that if we leave here to-morrow morning about seven o’clock, it will be early enough.

“There is, however, one other point to consider: I presume you will desire to attract as little attention as possible; in which event I would suggest that a start from here should be made, say, about two hours before daylight to-morrow morning, which will afford us time to make a long circular sweep in a north-easterly direction, clearing the British Isles before dawn. After that we shall almost certainly meet with weather which will enable us to conceal our movements by remaining all day above the lower cloud level, a mode of procedure which will possess the further recommendation of being advantageous to your daughter’s health by keeping her in a dry, pure, bracing atmosphere.”

“Such an arrangement would mean that we must all take up our quarters on board to-night,” remarked Sir Reginald. “How would that suit your convenience, dear?” he inquired of Lady Olivia.

“Quite well,” answered her ladyship. “Everything that Ida or I shall require is already on board, and, so far as we are concerned, it makes no difference whether we go on board immediately, or some time to-morrow. Only, if you should decide to accept Professor von Schalckenberg’s suggestion, I should like to know soon, as it is nearly Ida’s bedtime; and if we are to start early to-morrow morning, I will send her and Nurse on board at once.”

And so it was presently arranged, the whole party making their way to the ship together, and there and then taking possession of their quarters.

It wanted a few minutes of four o’clock the next morning, when Professor von Schalckenberg rose from his couch and, wrapping himself in a gorgeous dressing-gown, made his way quietly to one of the luxurious bathrooms with which the Flying Fish was fitted, where he took his matutinal cold tub, returning, a quarter of an hour later, to his cabin, fresh and vigorous, to find that, according to orders, George, the chief steward, had already brought a cup of coffee for his delectation while dressing. And punctually at a quarter to five the professor might have been seen making his way, on slippered feet, into the pilot-house. Arrived there, he turned on an electric light of moderate power and, with the assistance of the illumination thus furnished, peered about him as he satisfied himself that everything was in perfect order. Then he laid his hand upon the crank of a large wheel within reach, and gave the wheel three or four turns, directing his gaze, meanwhile, upon two large dials which were attached, side by side, to the wall of the pilot-house. Each of these dials was provided with an index hand, both of which began to move almost simultaneously with the first movement of the large wheel by the professor. One of the dials was simply a very sensitive and accurate pressure gauge; the other was an instrument for registering the weight of the ship, or the pressure with which she bore upon the ground. The index hands of both dials were travelling backwards towards zero along their respective graduated arcs; and simultaneously with the registration by the pressure gauge of a pressure of six pounds—which indicated the air-pressure in the air-chambers of the ship—the other dial registered zero, thus indicating that the partial exhaustion of the air in the air-chambers had rendered the ship so buoyant that she was now deprived of weight and was upon the point of floating upward, balloon-like, in the air. Another moment, and the incredible was happening; the ship had become converted into a gigantic metallic balloon, and the professor, extinguishing the electric light which illuminated the interior of the pilot-house, peered out through one of the circular ports in the walls of the structure, to see by the starlight that the Flying Fish had already left the earth, and, in the still air, was rising in a perfectly horizontal position past the tops of the trees in the park.