The artificers landed this morning at 6 o’clock, and left the Rock again at a quarter past 10, having had four hours’ and a quarter’s work, when seven stones were laid. In the evening, the artificers landed at 6, and continued at work till 10, having had a tide of four hours, in which time eight stones were laid. Owing to the surf of sea upon the Rock to-day, it was with the utmost difficulty that the heavy blocks could either be got out of the Smeaton into the praams, or conveyed in safety to the Rock. It was only by the experience now acquired, and the activity of the landing-master’s crew, that any thing was done to the building during the whole of these spring-tides. Indeed the Smeaton was forced to leave her moorings, and return to Arbroath, before the whole of her last cargo could be delivered. In this state of the weather, the workmen could not be regularly employed in building; but there was so much to do with each course, in boring trenail holes, and laying railways during the time of low-water, that the artificers were always fully employed, when it was possible to land. During the period of high-water, the mill-wrights and joiners were occupied in framing the upper part of the Beacon-house. [Sidenote: Wednesday, 21st.] [Sidenote: Engineer’s clerk most active in dispatching the shipping.] To-day the wind was at S.W., blowing a fresh gale, and it was not expected that the Smeaton could have possibly returned from Arbroath, with the remaining stones of the course in hand, consisting of 17 blocks, with which, from the advanced period of the season, and the boisterous state of the weather, it was proposed to terminate the building for this year. The Smeaton, however, got to Arbroath last night, at a late hour; and Mr Lachlan Kennedy, Engineer’s clerk,--whose department it was to attend to the dispatch of the vessels,--with that promptitude and zeal in the service which uniformly marked all his transactions, called the artificers in the work-yard barrack at midnight, when they commenced, with torch-light, to cart the stones to the quay, and had loaded the Smeaton, by half-past 2 A. M., so that she saved tide out of the harbour, and at half-past 6 got to her moorings at the Rock. [Sidenote: The unfortunate loss of James Scott, one of the seamen.]