"He is welcome to do that," Oswald said. "My fear is that he will send down to the port, to inquire if any craft put out about the hour at which his men were attacked. But even if he does so, there is no great chance of our being overtaken. We are travelling fast, and in another hour it will be dark; and long before daybreak we shall reach Leith, having both wind and tide in our favour, all the way."
They kept an anxious watch, as long as there was light enough for them to make out if a vessel left Dunbar. Both fancied that they could see a sail, just as twilight was falling, but neither could be sure that it was not the effect of imagination. They were already ten miles away, and as the tide had now begun to make along the shore, it was certain that for some time, at least, a ship, however fast she might be, would gain but little upon them, until she had fairly entered the Firth. There would be no moon and, even should she overtake them, she might well pass them in the dark.
When they lay down, they agreed that they would keep awake in turns; and that, if they made out a ship apparently pursuing them, they would offer the skipper the full value for his boat, and betake themselves to it, and row for shore.
"The greatest danger," Roger said, "would be of their passing us, unseen; and then lying-to near the entrance of the port, and overhauling us as we came in."
"That is a danger that we cannot guard against. Can you swim, Roger?"
"It is years since I have done so," the monk replied, "but I used to do so, in the old days."
"There is an empty cask here, by my side," Oswald went on. "If we are challenged, the best plan would be to lower it down, quietly, into the water; and to hold on by it. The boat would certainly go some distance, before she had lost her way and brought up; and we should be out of sight of both ships, before they came together."
"That is a good idea. If we hear a hail, I will at once cut a good length of rope, and twist it round a barrel for us to hold on by. But I don't think there is any chance of our being overhauled."
"I agree with you in that respect; still, it is just as well to have our plans prepared, in case it should happen."
They kept a vigilant watch through the night, without catching sight of any craft proceeding in the same direction as themselves.