The puff of wind, or little squall, had struck the schooner at the most unfavourable moment for her safety. She had just lost her way in tacking, and the hull not moving ahead, as happens when a craft is thus assailed with the motion on her, all the power of the wind was expended in the direction necessary to capsize her. Another disadvantage arose from the want of motion. The rudder, which acts solely by pressing against the water as the vessel meets it, was useless, and it was not possible to luff, and throw the wind from the sails, as is usually practised by fore-and-aft rigged craft, in moments of such peril. In consequence of these united difficulties, the shifting of the cargo in the hold, the tenderness of the craft itself, and the force of the squall, the schooner had gone so far over as to carry all three of the openings to her interior suddenly under water, where they remained, held by the pressure of the cargo that had rolled to leeward. Had not the water completely covered these openings, or hatches, the schooner must have sunk in a minute or two, or by the time Mulford had got all his companions safe on her bilge. But they were completely submerged, and so continued to be, which circumstance alone prevented the vessel from sinking, as the following simple explanation will show.

Any person who will put an empty tumbler, bottom upwards, into a bucket of water, will find that the water will not rise within the tumbler more than an inch at most. At that point it is arrested by the resistance of the air, which, unable to escape, and compressed into a narrow compass, forms a body that the other fluid cannot penetrate. It is on this simple and familiar principle, that the chemist keeps his gases, in inverted glasses, placing them on shelves, slightly submerged in water. Thus it was, then, that the schooner continued to float, though nearly bottom upward, and with three inlets open, by which the water could and did penetrate. A considerable quantity of the element had rushed in at the instant of capsizing, but meeting with resistance from the compressed and pent air, its progress had been arrested, and the wreck continued to float, sustained by the buoyancy that was imparted to it, in containing so large a body of a substance no heavier than atmospheric air. After displacing its weight of water, enough of buoyancy remained to raise the keel a few feet above the level of the sea.

As soon as Mulford had ascertained the facts of their situation, he communicated them to his companions, encouraging them to hope for eventual safety. It was true, their situation was nearly desperate, admitting that the wreck should continue to float for ever, since they were almost without food, or anything to drink, and had no means of urging the hull through the water. They must float, too, at the mercy of the winds and waves, and should a sea get up, it might soon be impossible for Mulford himself to maintain his footing on the bottom of the wreck. All this the young man had dimly shadowed forth to him, through his professional experience; but the certainty of the vessel's not sinking immediately had so far revived his spirits, as to cause him to look on the bright side of the future, pale as that glimmering of hope was made to appear whenever reason cast one of its severe glances athwart it.

Harry had no difficulty in making Rose comprehend their precise situation. Her active and clear mind understood at once the causes of their present preservation, and most of the hazards of the future. It was not so with Jack Tier. He was composed, even resigned; but he could not see the reason why the schooner still floated.

“I know that the cabin-doors were open,” he said, “and if they wasn't, of no great matter would it be, since the joints ar'n't caulked, and the water would run through them as through a sieve. I'm afeard, Mr. Mulford, we shall find the wreck going from under our feet afore long, and when we least wish it, perhaps.”

“I tell you the wreck will float so long as the air remains in its hold,” returned the mate, cheerfully. “Do you not see how buoyant it is?—the certain proof that there is plenty of air within. So long as that remains, the hull must float.”

“I've always understood,” said Jack, sticking to his opinion, “that wessels floats by vartue of water, and not by vartue of air; and, that when the water gets on the wrong side on 'em, there's little hope left of keepin' 'em up.”

“What has become of the boat?” suddenly cried the mate. “I have been so much occupied as to have forgotten the boat. In that boat we might all of us still reach Key West. I see nothing of the boat!”

A profound silence succeeded this sudden and unexpected question. All knew that the boat was gone, and all knew that it had been lost by the widow's pertinacity and clumsiness; but no one felt disposed to betray her at that grave moment. Mulford left the bilge, and waded as far aft as it was at all prudent for him to proceed, in the vain hope that the boat might be there, fastened by its painter to the schooner's tafferel, as he had left it, but concealed from view by the darkness of the night. Not finding what he was after, he returned to his companions, still uttering exclamations of surprise at the unaccountable loss of the boat. Rose now told him that the boat had got adrift some ten or fifteen minutes before the accident befell them, and that they were actually endeavouring to recover it when the squall which capsized the schooner struck them.

“And why did you not call me, Rose?” asked Harry, with a little of gentle reproach in his manner. “It must have soon been my watch on deck, and it would have been better that I should lose half an hour of my watch below, than that we should lose the boat.”