They worked on that year till the 21st September; and began again--the next on the 27th of May. On the 8th of July, they found to their great joy that the tide, even at high water, did not overflow the building; and so glad were they that they hoisted flags everywhere and fired a salute of three guns. By the 25th of August, it was thirty-one and a half feet above the rock. Mr. Stevenson was so anxious about his work that he paid two or three visits to the rock during the next winter. He found, however, that it was uninjured by the storms, and began to have a hope that during the coming season it would be completed. Nor were his hopes vain. The men began work again on the 10th of May. In July they had a visit from Mrs. Dickson, the only daughter of Smeaton. On the 29th the last stone was landed upon the rock, and on the 30th the last course was laid. There had been ninety courses in all. As soon as the work was finished Stevenson reverently and thankfully offered this benediction--"May the great Architect of the universe, under whose blessing this perilous work has prospered, preserve it as a guide to the mariners." On the 17th December in the same year, this advertisement recorded the fact of the lighthouse being finished:--"A lighthouse having been erected upon the Inchcape, or Bell Rock, situated at the Firths of Forth and Tay, in north latitude 56 degrees 29 minutes, and west longitude 2 degrees 22 minutes, the Commissioners of the Northern Lighthouses hereby give notice, that the light will be from oil, with reflectors, placed at the height of about one hundred and eight feet above the medium level of the sea. The light will be exhibited on the night of Friday, the first day of February 1811, and each night thereafter, from the going away of daylight in the evening until the return of daylight in the morning. To distinguish this light from others on the coast, it is made to revolve horizontally, and to exhibit a bright light of the natural appearance, and a red-coloured light alternately, both respectively attaining their greatest strength, or most luminous effect, in the space of every four minutes; during that period the bright light will, to a distant observer, appear like a star of the first magnitude, which after attaining its full strength is gradually eclipsed to total darkness, and is succeeded by the red-coloured light, which in like manner increases to full strength, and again diminishes and disappears. The coloured light, however, being less powerful, may not be seen for a time after the bright light is first observed. During the continuance of foggy weather, and showers of snow, a bell will be tolled by machinery, night and day, at intervals of half a minute."