At this moment his reflections were broken by little Wasp, who, attempting to spring up against the window, began to yelp and bark most furiously. The sounds reached Dinmont's ears, but without dissipating the illusion which had transported him from this wretched apartment to the free air of his own green hills. 'Hoy, Yarrow, man! far yaud, far yaud!' he muttered between his teeth, imagining, doubtless, that he was calling to his sheep-dog, and hounding him in shepherds' phrase against some intruders on the grazing. The continued barking of the terrier within was answered by the angry challenge of the mastiff in the courtyard, which had for a long time been silent, excepting only an occasional short and deep note, uttered when the moon shone suddenly from among the clouds. Now his clamour was continued and furious, and seemed to be excited by some disturbance distinct from the barking of Wasp, which had first given him the alarm, and which, with much trouble, his master had contrived to still into an angry note of low growling. At last Bertram, whose attention was now fully awakened, conceived that he saw a boat upon the sea, and heard in good earnest the sound of oars and of human voices mingling with the dash of the billows. 'Some benighted fishermen,' he thought, 'or perhaps some of the desperate traders from the Isle of Man. They are very hardy, however, to approach so near to the custom-house, where there must be sentinels. It is a large boat, like a long-boat, and full of people; perhaps it belongs to the revenue service.' Bertram was confirmed in this last opinion by observing that the boat made for a little quay which ran into the sea behind the custom-house, and, jumping ashore one after another, the crew, to the number of twenty hands, glided secretly up a small lane which divided the custom-house from the bridewell, and disappeared from his sight, leaving only two persons to take care of the boat.