At 4 o’clock this morning the Tender reached her moorings, and was made fast to the south-west buoy, as laid down upon Plate V. At 5 o’clock, 32 artificers and 11 seamen landed upon the Rock, from three boats. The landing-master’s crew transported one of the cranes from on board of the Tender, on one of the praams, and landed it at high-water upon the Rock. Having again landed in the evening, the foundation-pit was cleared of water by 6 o’clock, when the Crane was set up and properly guyed with ropes. The center-stone and three others were then laid with mortar, and trenailed to the Rock. After two hours’ work, the site of the building was again overflowed, and at 8 o’clock the artificers returned on board of the Tender. [Sidenote: Advantages of the new cranes over sheer-poles.] As the stones were all dove-tailed into one another, they required to be laid perpendicularly into their respective places, which was also essential to preserving a proper bed of mortar under them. This could only be effected in a speedy and dextrous manner by means of a crane; but it will further be seen, from the angular figure of the stones, that this could not be effected by one of these machines of the ordinary construction, as has formerly been noticed. It had been recommended to the writer to use the common sheer-poles, with which the Edystone Light-house was built, which, notwithstanding all the improvements in machinery, were still chiefly in use for laying heavy stones; but sheer-poles, besides being difficult to preserve on a sunken rock, could neither have laid the materials so well, nor with a tenth part of the expedition, as the crane with the moveable beam delineated in Plate XIV. [Sidenote: Mr Smeaton’s plan of Trenails and Wedges followed.]