He shook Hal heartily by the hand, and then hurried away. As for the latter, he at once followed the instruction given him, and then, carrying the two parcels, went to his own cabin.

"I'll make all ready for a swim," he murmured, turning the contents of a drawer on to the carpet.

There were some thin cotton suits, and he at once selected a coat and the lightest pair of trousers, tearing these across at the knees, so as to make them like football knickers. Then he threw off his outer clothes, and having donned the ones he had just selected, put on his own suit over them. A minute later he was ready, the belt attached to his waist and out of sight, and the parcel of food beneath his coat.

Just as dusk was falling, a marine came to call him, and on ascending to the deck he found the lieutenant waiting. They at once went over the side into a cutter, and were rowed across to the Merrimac.

"There she is," whispered Lieutenant Billing, as her enormous hull hove in sight. "Good luck, Marchant! Just you slip aboard after me, and look round for yourself. So long to you."

"Right; I know what to do. Good-by, and thank you very much."

Hal stretched out his hand, and gripping the lieutenant's, pressed it warmly. Then he clambered up the swaying rope ladder on to the deck. By this time night had fallen, and as it was necessary to have no lights burning, the ship was in darkness from stem to stern. Hal at once crossed the deck, and, feeling his way along the engine skylights, came to a wide, open companion way. He slipped down the stairs, and at once found himself in a small saloon. Then his fingers touched a handle, and, turning it, he entered a small cabin, through the unshaded porthole of which he caught a glimpse of distant lights, twinkling faintly from the ships of Admiral Sampson's squadron.

"This will do for me," he murmured in tones of satisfaction. "I'll lie here till the hour for action arrives."

He sat down and kept a watch out to sea. Occasionally he heard footsteps overhead, and once the low murmur of voices, evidently from men lying alongside in a boat. But soon all was quiet, save for a low grating sound which now and again reached his ear, and told him that the stokers were at work. Hour succeeded hour, and still he remained in the cabin, though he was becoming more and more restless and troubled, for the Merrimac did not move. At last, when midnight was past, her anchor was hove up, and she steamed away for Santiago, her departure having been delayed, as all was not ready for the enterprise at the appointed time.

Hal at once sprang to his feet, and, having seen that his revolver was well secured, and the parcel of food tied to his belt, he pulled off his outer clothes and stood up in the thin cotton ones which he had selected. But, after all, he was to be disappointed, for suddenly there was the panting of machinery, and a low black hull rushed past, leaving a trail of fiery sparks behind it.