“She does not need it, madam,” said Captain Strong. “It is her duty.”

That night passed quite peacefully, the watch hearing nothing of the strange roar. The next day busy hands were at work making a second hut for the men, every one working his best so as to be prepared for the tropical showers, which have a habit of coming on nearly daily; but this day broke gloriously fine, and palm leaves were cut and carried, bamboos discovered and cut down for poles and rafters, and the men worked with such good heart that the second hut towards afternoon began to assume shape.

The ladies were as busy as ever, undertaking the nursing and cooking; but Morgan relieved them of half the former by getting up to seat himself under a shady tree and watch the progress made.

Mark and the major were told off for their former task of finding provisions; and, nothing loth, they started in good time, choosing another route—that is to say, they struck off to the east—going beyond the cooking place among the rocks, meaning to see if any of the great grey pigeons were to be found in that direction by some other pass into the interior.

Their walk was glorious; with the beautiful lagoon on one side, evidently crowded with fish, and the fringe of cocoa-nut trees on their left; while from time to time, as the groves opened, they obtained glimpses of the volcanic cone.

Bruff and Jack took it as a matter of course that they were to belong to the foraging party, and trotted along over the sand, the one eagerly on the search for something that he might hunt, the other with his little restless eyes watching for fruit. But neither met with any reward.

Picking out the firm sand where the tide had gone down the hunters found good walking, and were able to leave the encampment several miles behind without feeling any fatigue, but the game-bags which they had this time slung over their shoulders, remained empty, and the guns seemed to increase in weight.

“I wish we could get right round and prove that this is an island,” said the major; “but we must not attempt it to-day. Are these cocoa-nut palms never coming to an end?”

“Let’s go through them, and try to reach the foot of the mountain,” said Mark at last. “I want to get a supply of something to eat, but I should like to see the mountain close to.”

“And go up it and peep in at the crater, eh?”