About a mile below the city, on the left bank of the river, is a woody acclivity called Bunn's Hill. It is a fine grassy slope, and the land beyond the summit has a park-like appearance, being ornamented with fine timber and coppices. The high road to Bath, which passes over Bunn's Hill, is distant about half a mile from the Severn. The hill itself slopes towards the river, and there is more rough wood on that side than on the summit. After passing the top, and getting on to the level, the slope towards the Severn becomes somewhat more precipitous, until a place is reached, now called "The Ketch"--about half a mile beyond the summit of the hill. For some distance the bank is then a nearly perpendicular marl rock, some thirty or forty feet in height. Bunn's Hill is not quite half a mile from the confluence of the Teme and the Severn. The appearance of Bunn's Hill was somewhat wilder when Charles gazed at it from the cathedral tower than it is at the present day, but its general features are unchanged. While looking towards the woody slopes we have just described, the king perceived a large body of soldiers, amounting perhaps to a thousand, issue from a coppice that had hitherto screened them from view. They had with them pontoon-carriages and some cannon, and descending to the banks of the river, selected a favourable spot for their purpose, and immediately began to construct a bridge of boats. The sight of this operation, which was carried on most expeditiously, greatly excited Charles. "This must be stopped," he exclaimed. "If yonder pontoon bridge should be completed, Cromwell will cross the river and outflank Montgomery. We ought to have foreseen it." Then calling to Pitscottie, who stepped towards him instantly, he added, "Haste to your regiment, colonel. Fortunately, it is not far from the spot you have to reach. That bridge of boats must not be completed, or if it should be finished before you arrive, it must be destroyed." "It shall be done, my liege, if I sacrifice all my men in executing your majesty's order," replied Pitscottie. "Trust me, Cromwell shall never set foot on the west bank of the Severn." With that Pitscottie disappeared. In an inconceivably short space of time he was seen crossing the river in one of the large flat-bottomed boats we have before mentioned. His charger and his guard of Highlanders were with him. On reaching the bank, he quickly disembarked, and mounting his steed, galloped off towards his camp, his swift-footed men almost keeping up with him. Not entirely satisfied with Pitscottie's ability to execute the order given him, Charles was about to send Colonel Legge with a detachment of men to Bunn's Hill to interrupt the pontoniers, but the Duke of Hamilton dissuaded him from the design, saying that the forces round the city must on no account be diminished.