In less than ten minutes the loyal noble, though greatly disliking his mission, was speeding along the road to Berwick-upon-Tweed, followed by a groom.

The early part of the day passed without any incident worth narrating. The prince did not quit the castle, but breakfasted in his tower, and, later on, visited the keep attended by Lord Derwentwater and the two young ladies, and thus obtained a more perfect notion than he had hitherto formed of the strength of King Ida's castle.

From the summit of the lofty structure he looked down upon the islands that studded the sea in front of him, and was amazed by the multitude of sea-birds that covered their rocks and precipices, and occasionally rose in clouds, uttering shrieks and cries that could be distinctly heard where he stood.

The sea was calm now, but Anna described its terrific appearance in a storm when tremendous waves were dashed against those rocks, and columns of spray were thrown up through their fissures to a prodigious height.

The islands consisted of two groups, and the more distant of them seemed entirely whitened by sea-birds. The Home Island, as the nearest of the Fame Islands is designated, is not much more than a mile from the mainland, and on that bright, sunshiny day looked close at hand. Dorothy pointed out Prior Castell's Tower, which served as a beacon.

While the prince was examining the little bay almost shut in by rocks that formed an entrance to the Home Island, he observed a boat come forth. It was large and roomy, strongly built and well calculated for a rough sea, and seemed to contain a dozen men armed with muskets or fowling-pieces.

The appearance of this boat and its crew excited some misgiving on the part of those who watched it, especially when they found it was steering direct for the castle.

Lord Derwentwater was preparing to descend to the court and give the alarm, when the boat, which had now got within a quarter of a mile of the shore, suddenly changed its course, and turned off on the left.

Its movements were anxiously watched in the apprehension that the men might be landed, but it went on, and after rounding Beadnell Point was lost to view. The prince then breathed more freely.

“I thought those men were about to attack the castle,” he said. “But it seems they had no such design.”