By nightfall the launch was a hundred miles west of the island. Norrie got eight knots out of her, but it needed no special calculation to discover that she would barely make the coast of Brazil if she consumed every ounce of coal and wood on board. The engines were strong and in good condition, but she had no bunker space for a long voyage. Were it not for Hozier's foresight she would have been drifting with the Gulf Stream four hours after leaving the island. As it was, unless they received a fresh supply of fuel from another ship, they must unquestionably take the straightest line to the mainland.
During the day they had sighted three vessels, but at such distances that signaling was useless, each being hull down on their limited horizon. Moreover, they had to be cautious. The cruiser, trusting to her speed, might try a long cast north and south of the launch's supposed path. She alone, among passing ships, would be scouring the sea with incessant vigilance, and it behooved them, now as ever, not to attract her attention. They were burning wood, so there was no smoke, and the mast was unstepped. Yet the hours of daylight were tortured by constant fear. Even Iris was glad when the darkness came and they were hidden.
At midnight a curious misfortune befell them. The compass had been smashed during the fight, and not a sailor among them owned one of the tiny compasses that are often worn as a charm on the watchchain. This drawback, of little consequence when sun or stars could be seen, assumed the most serious importance when a heavy fog spread over the face of the waters. The set of the current was a guide of a sort, but, as events proved, it misled them. Man is ever prone to over-estimate, and such a slight thing as the lap of water across the bows of a small craft was sure to be miscalculated; they contrived to steer west, it is true, but with a southerly inclination.
At four o'clock, by general reckoning, they were mid-way between island and continent. They were all wide awake, too weary and miserable to sleep. Suddenly a fog-horn smote the oppressive gloom. It drew near. A huge blotch crossed their bows. They could feel it rather than see it. They heard some order given in a foreign language, and De Sylva whispered:
"The Sao Geronimo!"
"The wot-ah?" demanded Coke, who was standing beside him.
"The cruiser!"
Coke listened. He could distinguish the half-speed beating of twin screws. He knew at once that the ex-President must have recognized the warship as she passed the creek, but, by some accident, had failed to mention her name during the long hours that had sped in the meantime. The sinister specter passed and the launch crept on. Everyone on board was breathless with suspense. Faces were shrouded by night and the fog, but some gasped and others mumbled prayers. One of the wounded soldiers shouted in delirium, and a coat was thrust over his head with brutal force. The fog-horn blared again, two cables' lengths distant. They were saved, for the moment!
In a little while, perhaps twenty minutes, they heard another siren. It sounded a different note, a quaintly harsh blend of discords. Whatsoever ship this might be, it was not the Sao Geronimo. And in that thrilling instant there was a coldness on one side of their faces that was not on the other. Moist skin is a weather-vane in its way. A breeze was springing up. Soon the fog would be rolled from off the sea and the sun would peer at them in mockery.
Coke's gruff voice reached every ear: