The wind this morning was variable, but the weather continued extremely favourable for the operations throughout the whole day. At 6 A. M. the boats were in motion, and the raft, consisting of four of the six principal beams of the Beacon-house, each measuring about sixteen inches square, and fifty feet in length, was towed to the rock, where it was anchored, that it might _ground_ upon it as the water ebbed. At 7 A. M. the boats of the Floating-light, the Yacht, and the Smeaton, arrived at the rock, when the work immediately commenced. The sailors and artificers, including all hands to-day, counted no fewer than fifty-two, being perhaps the greatest number of persons ever collected upon the Bell Rock. It was early in the tide when the boats reached the rock, and the men worked a considerable time up to their middle in water, every one being more eager than his neighbour to be useful. Even the four artificers, who had hitherto declined working on Sunday, were to-day most zealous in their exertions; they had indeed become so convinced of the precarious nature and necessity of the work, that they never afterwards absented themselves from the rock on Sunday, when a landing was practicable. [Sidenote: Method of raising the principal beams of the Beacon-house.] Having made fast a piece of very good new line, at about two thirds from the lower end of one of the beams, the purchase-tackle of the derrick was hooked into the turns of the line, and it was speedily raised, by the number of men on the rock, and the power of the winch tackle. When this log was lifted to a sufficient height, its foot, or lower end, was _stepped_ into the spot which had been previously prepared for it. Two of the great iron stanchions were then set into their respective holes, on each side of the beam, when a rope was passed round them and the beam, to prevent it from slipping, till it could be more permanently fixed. The derrick or upright spar used for carrying the tackle to raise the first beam, was placed in such a position as to become useful for supporting the upper end of it, which now became, in its turn, the prop of the tackle for raising the second beam, which was laid in such a position, that when hoisted up, its foot slipped into its place, when it was, in like manner, lashed to its great iron stanchions on each side. The first and second beams being lashed to one another at the top, served as a pair of sheers, from which the purchase tackle was now suspended, for raising the other two beams, which were also speedily got into their places. The whole difficulty of this operation was in the raising and propping of the first beam, which became a convenient derrick for raising the second, these again a pair of sheers for lifting the third, and the sheers a triangle for raising the fourth. Having thus got four of the six principal beams set on end, it required a considerable degree of trouble to get their upper ends to fit. Here they formed the apex of a