The plan that had been adopted by Britain for keeping the Atlantic route open was briefly as follows:—All along the 3000 miles of the steamer track a battleship was stationed at the end of every day's run, that is to say, at intervals of about 500 miles, and patrolled within a radius of 100 miles. Each of these was attended by two heavily-armed cruisers and four torpedo-boats, while between these points swifter cruisers were constantly running to and fro convoying the liners.

Thus, when the Aurania left New York, she was picked up on the limit of the American water by two cruisers, which would keep pace with her as well as they could until she reached the first battleship. As she passed the ironclad these two would leave her, and the next two would take up the running, and so on until she reached the range of operations of the Irish Squadron.

No other Power in the world could have maintained such a system of ocean police, but Britain was putting forth the whole of her mighty naval strength, and so she spared neither ships nor money to keep open the American and Canadian routes, for on them nearly half her food-supply depended, as well as her chief line of communication with the far East.

On the other hand, her enemies were making desperate efforts to break the chain of steel that was thus stretched across the hemisphere, for they well knew that, this once broken, the first real triumph of the war would have been won.

Five hundred miles out from New York the Aurania was joined by the Oceana, the largest vessel on the Canadian Pacific line from Halifax to Liverpool. So far no enemy had been seen. The two great liners reached the first battleship together, and were joined by the second pair of cruisers. Before sunset the Cunarder had drawn ahead of her companions, and by nightfall was racing away alone over the water with every light carefully concealed, and keeping an eager look-out for friend or foe.

There was no moon, and the sky was so heavily overcast with clouds, that, under any other circumstances, it would have been the height of rashness to go rushing through the darkness at such a headlong speed. But the captain of the Aurania was aware of the state of the road, and he knew that in speed and secrecy lay his only chances of getting his magnificent vessel through in safety.

Soon after ten o'clock lights were sighted dead ahead. The course was slightly altered, and the great liner swept past one of the North German Lloyd boats in company with a cruiser. The private signal was made and answered, and in half an hour she was again alone amidst the darkness.

It was nearly eleven o'clock, when Michael Roburoff, who was standing under the lee of one of the ventilators amidships, smoking a last pipe before turning in, saw a figure muffled in a huge grey ulster creeping into the deeper shadows under the bridge. It was so dark that he could only just make out the outline of the figure, but he could see enough to rouse his ever ready suspicions in the furtive movements that the man was making.

He stole out on the starboard, that is the southward, rail of the spar-deck, and Michael, straining his eyes to the utmost, saw him take a round flat object from under his coat, and then look round stealthily to see if he was observed. As he did so Michael whipped a pistol out of his pocket, levelled it at the man, and said in a low, distinct tone—

"Put that back, or I'll shoot!"