Meantime, the abbot had been led to the chief room of the mill, where all the corn formerly consumed within the monastery had been prepared, and which the size of the chamber itself, together with the vastness of the stones used in the operation of grinding, and connected with the huge water-wheel outside, proved to be by no means inconsiderable. Strong shafts of timber supported the flooring above, and were crossed by other boards placed horizontally, from which various implements in use at the mill depended, giving the chamber, imperfectly lighted as it now was by the lamp borne by Abel, a strange and almost mysterious appearance. Three or four of the miller's men, armed with pikes, had followed their master, and, though much alarmed, they vowed to die rather than give up the abbot. By this time Hal o' Nabs had joined the group, and proceeding towards a raised part of the chamber where the grinding-stones were set, he knelt down, and laying hold of a small ring, raised up a trapdoor. The fresh air which blew up through the aperture, combined with the rushing sound of water, showed that the Calder flowed immediately beneath; and, having made some slight preparation, Hal let himself down into the stream. At this moment a loud crash was heard, and one of the miller's men cried out that the arquebussiers had burst open the door. "Be hondy, then, lads, and let him down!" cried Hal o' Nabs, who had some difficulty in maintaining his footing on the rough, stony bottom of the swift stream. Passively yielding, the abbot suffered the miller and one of the stoutest of his men to assist him through the trapdoor, while a third held down the lamp, and showed Hal o' Nabs, up to his middle in the darkling current, and stretching out his arms to receive the burden. The light fell upon the huge black circle of the watershed now stopped, and upon the dripping arches supporting the mill. In another moment the abbot plunged into the water, the trapdoor was replaced, and bolted underneath by Hal, who, while guiding his companion along, and bidding him catch hold of the wood-work of the wheel, heard a heavy trampling of many feet on the boards above, showing that the pursuers had obtained admittance.