“In the course of the next hour I hope to be alongside her,” answered Mildmay. “Fortunately for us, the weather is gloriously clear, and we ought, therefore, to sight her at a very considerable distance. Furthermore, since we know, within a very few miles, precisely where to look for her, I think we need not anticipate any difficulty in the matter of identification. And, once alongside her, I propose to make short work of the job, even should she happen to be in company with other ships. For, in such an event, no other craft—unless, indeed, she should happen to be a Russian man-o’-war—will be in the least degree likely to interfere with us.”

“Have you decided upon your plan of operation?” demanded Lethbridge.

“Yes,” answered Mildmay. “I propose that as soon as we have sighted and identified the steamer, we sink to the surface of the water, and approach our quarry in the character of an ordinary ship of more or less mysterious appearance, for by so doing we shall render our own identification all the more difficult. It will be necessary that the professor and I should remain here in the pilot-house—I to manoeuvre the Flying Fish, and the professor, prompted by me, to do the hailing part of the business, since he is the only man among us who can make himself thoroughly intelligible in the Russian language. We have mounted one of our Maxims, as you have, doubtless, already observed; for it is improbable that the skipper of the other craft will concede our demands until we have convinced him of our power to enforce them, and I shall therefore be obliged to request one of you two gentlemen to take charge of the gun, while the other stations himself in the torpedo-room for’ard, and stands by to fire a torpedo-shell if necessary.”

“Very well,” said Sir Reginald. “I will take the Maxim, and Lethbridge will no doubt attend to the torpedo part of the business. But I hope,” he added, “it will not be necessary to use one of those terrible shells, for, if it is, the loss of life will be frightful.”

“Not necessarily,” said the professor. “Mildmay and I have talked the matter over together, and our gallant friend is confident of his ability to manoeuvre the Flying Fish so that the firing of a shell shall result in nothing more serious than the destruction of the convict-ship’s rudder and propeller, thus completely disabling her without imperilling her safety.”

“Very well,” rather reluctantly assented the baronet; “if that can be done, well and good, but for pity’s sake, Mildmay, be very careful what you do.”

“I will,” responded Mildmay. “I am not altogether without hope that we may be able to accomplish our purpose without the necessity to resort to so stringent a measure as the firing of a shell; and in any case I promise you that I will only do so after all other means have failed. But here we are, clear of the land at last; and we must alter our course a point and a half to the westward to intercept the chase.”

It was exactly thirty-six minutes later, by the clock in the pilot-house, that Mildmay, peering out through one of the port-holes, pointed straight ahead, and exclaimed—

“There she is! There cannot be any mistake about it, for yonder steamer is exactly where the Ludwig Gadd ought to be; and there is no other craft anywhere in sight.”

The other three men forthwith stepped to the nearest port that would afford a view of the chase, and gazed eagerly ahead. And there, immediately over the long, tapering, conical-pointed bow of the Flying Fish they beheld, some ten miles distant, a small, faintly denned grey blotch on the mirror-like surface of the sea, with a trail of black smoke issuing from it, as though the furnaces on board her had just been freshly stoked.