In the year 1816, or fourth season, the work was continued till the month of November, when the building had attained the height of about 20 feet, or the 16th course, and still wanting 18 courses to complete the masonry. In this state, it was left till the following season, having been previously loaded with about four tons of lead, cast in suitable pieces, and suspended within the void or central hollow of the building. The operations of the fourth season had been also much retarded by several untoward accidents. In particular, a heavy gale overtook the workmen while they were laying the 7th course, which obliged them to leave the rock before the precautionary measures could be taken, for closing and completing the work immediately in hand; in consequence of which, the stones on the eastern, or weather-side of this course, were lifted off their bases, the oaken trenails broken, and five of the blocks of stone swept away. At another period, the Pozzolano mortar of the beds of two of the stones was washed out, and so much injured, that the stones required to be lifted and relaid. The works were this season intended to have been closed early in the month of October, when another unlucky gale sprung up, just as the sixteenth course had been laid, which lifted seven of the stones off their beds; but they were fortunately held by the oaken trenails, and in this state they remained for about three weeks, before a landing could possibly be effected, to replace them. [Sidenote: Fifth year’s work.] In the month of June 1817, the fifth year’s work was begun, and the remaining courses of the masonry were built; but in the month of November, the coast was visited with a gale of wind at south-east, accompanied with a heavy swell of sea, which, unfortunately, washed down the upper part of the building, and reduced it to the height of the fifth course, which formed part of the fourth year’s work. [Sidenote: Beacon finished with cast-iron pillars and ball.] Instead, therefore, of completing this Beacon with masonry, as had been originally intended, and providing the Machine and large Bell, which was to have measured 5 feet across the mouth, to be tolled by the alternate rise and fall of the tide, it now became a matter of consideration in what form the upper part of this design should be finished. The Board ultimately determined on the erection of six columns of cast-iron upon the remaining courses of masonry. These columns are put together with spigot and facet joints, strongly connected with collars and horizontal bars of malleable iron; the whole terminating with a cast-iron ball, formed in ribs, elevated about 25 feet above the medium level of the sea. In this manner the Carr Rock Beacon was at length completed, in the month of September 1821, after six years work. The following is the notice and description of it given to the public: [Sidenote: Bearings and Description of the Carr Rock Beacon.]