“Yes, for a spell,” said the captain; and Mark felt a swelling sensation at his breast as he saw his father go down into that suffocating fume to risk his life.

At that moment a hand was laid upon his shoulder, and turning sharply it was to see that the major was just passing him, laden with provisions for the next boat.

“What a soldier he would have made, my lad!” said the major, and passed on.

“He could not have done anything more brave,” said Mark to himself, “if he had been a soldier;” and he ran close to the hatchway as the buckets of water were being handed steadily down, while the pumps clanked heavily with the labour given by willing hands.

“Bravo, my lads!” cried Mr Gregory excitedly. “Cheerily ho! Now then.”

The men uttered a tremendous cheer, and another and another, and for the next half-hour there was the clanking of the pumps, and the loud slushing noise of the water being thrown below, and the hiss and rush of the constant stream from the hose.

The next hatches were thrown open, risky as the proceeding was; but without a current of air through the ship it would have been impossible for those below to have kept on with their suffocating task.

For the first quarter of an hour the captain and those with him worked like giants, and then came up, to be relieved by the mate and others, those who had been below now passing the water.

But it was blind and helpless work, and when this had been going on for about three-quarters of an hour, and the toilers were getting exhausted by the heat and smoke, Mr Morgan came up and announced that the boats were all ready, and this set four strong men at liberty to help with the water.

The second-mate went down at once, and in a quarter of an hour was relieved by the captain, who came up in turn, looking more stern than Mark had ever seen before.