They were French words. To Claude, of course, they were perfectly intelligible, though not so to Zac, who did not understand any language but his mother Yankee. Judging by the distinctness and the loudness of the sound, the speaker could not be very far away. The voice seemed to come from the water astern. No sight, however, was visible; and the two, as they stared into the fog, saw nothing whatever. Nor did any of the others on board seem to have heard the voice. The priest was still intent on his Breviary. Terry was still whistling his abominable tune. Jericho was below with his pots and pans; and Biler, taking advantage of his absence, was seated on the taffrail devouring a raw turnip, which he chewed with a melancholy air. To none of these had the voice been audible, and therefore Claude and Zac alone were confronted with this mystery of the deep. But it was a mystery which they could not fathom; for the fog was all around, hiding everything from view, and the more they peered into the gloom the less were they able to understand it. Neither of them spoke for some time. Zac had not understood the words, but was more puzzled about the fact of a speaker being so near on the water, behind the fog, than he was about the meaning of the words which had been spoken. That seemed to be quite a secondary consideration. And it was not until he had exhausted his resources in trying to imagine what or where the one might be, that, he thought of asking about the other. "What did it mean?" he asked, at length. Claude told him. Zac said nothing for some time. "I wonder whether they've seen us," said he, at length. "No--'tain't possible. The fog's too thick--and we're as invisible to them as they are to us. Besides, these words show that they ain't thinkin' about anybody but themselves. Well, all we've got to do is to keep as still as a mouse, an' I'll jest go an' warn the boys." With these words Zac moved softly away to warn his crew. First he went to Terry, and informed him that the whole fleet of France was around the Parson, and that their only chance of safety was to keep silent--a piece of information which effectually stopped Terry's singing and whistling for some time; then he told Biler, in a friendly way, that if he spoke above a whisper, or made any noise, he'd pitch him overboard with an anchor tied to his neck. Then he warned Jericho. As for Père Michel, he felt that warning was unnecessary, for the priest was too absorbed in his book to be conscious of the external world. After this, he came back to Claude, who had been listening ever since he left, but without hearing anything more. "We must have drifted nearer together," said Zac. "The voice was a good deal louder than when I fust heerd it. My only hope is, that they'll drift past us, an' we'll git further away from them. But I wonder what they meant by bringin' her head around. P'aps they've seen us, after all--an' then, again, p'aps they haven't."