Marquis had brought him to the one neglected, therefore forgotten, and thence undefended spot of the whole building. Before the well was sunk in the keep, the supply of water to the moat had been far more bountiful, and provision for a free overflow was necessary. For some reason, probably for the mere sake of facility in the construction, the passage for the superfluous water had been made larger than needful at the end next the moat. About midway to its outlet, however--a mere drain-mouth in a swampy hollow in the middle of a field--it had narrowed to a third of the compass. But the quarriers had cut across it above the point of contraction; and no danger of access occurring to lord Herbert or Mr. Salisbury, while they found a certain service in the tiny waterfall, they had left it as it was. CHAPTER XXVIII. RAGLAN STABLES. The passage for the overflow of the water of the moat was under the sunk walk which, reaching from the gate of the stone court round to the gate of the fountain court, enclosed the keep and its moat, looping them on as it were to the side of the double quadrangle of the castle. The only way out of this passage, at whose entrance Richard now found himself, was into the moat. As quietly therefore as he could, he got through the opening and into the water, amongst the lilies, where, much impeded by their tangling roots, which caused him many a submergence, but with a moon in her second quarter over his head to light him, he swam gently along. As he looked up from the water, however, to the huge crag-like tower over his head, the soft moonlight smoothing the rigour but bringing out all the wasteness of the grim blank, it seemed a hopeless attempt he had undertaken. Not the less did he keep his eye on the tower-side of the moat, and had not swum far before he caught sight of the little stair, which, enclosed in one of the six small round bastions encircling it, led up from the moat to the walk immediately around the citadel. The foot of this stair was, strangely enough, one of the only two points in the defence of the moat not absolutely commanded from either one or the other of the two gates of the castle. The top of the stair, however, was visible from one extreme point over the western gate, and the moment Richard, finding the small thick iron-studded door open, put his head out of the bastion, he caught sight of a warder far away, against the moonlit sky. All of the castle except the spot where that man stood, was hidden by the near bulk of the keep. He drew back, and sat down on the top of the stair--to think and let the water run from his clothes. When he issued, it was again on all-fours. He had, however, only to creep an inch or two to the right to be covered by one of the angles of the tower.