Another celebrated lighthouse is called the Bell Rock Lighthouse, which stands on the coast of Scotland, near Arbroath, in Forfarshire. These rocks have always been particularly dangerous for shipping, and when the commerce of Scotland was very much less than at the time of the erection of the lighthouse, it is said that the monks of the Abbey of Arbroath erected a bell on the rock, which was rung by machinery during the flowing and ebbing of the tide. About the year 1807, the present noble specimen of what man can accomplish, was commenced. The work was completed in 1811, under the direction of Mr. Stevenson, and reflects the highest honor upon his professional skill. The difficulties that had to be overcome were of the most embarassing description. At the commencement of the work, in consequence of the short time the rock was not covered with water, two or three hours were considered a good tide’s work, and, frequently after a portion of the foundation had been completed, a sudden storm would render it necessary to perform the same labour twice over, and even oftener. On one occasion, Mr. Stevenson and the men who were with him at work were exposed to great danger, in consequence of the vessel that used to carry them from the rock having broken from her moorings, and the tide at the same time commencing its rise. They were, fortunately however, saved by a small boat, which happened to bring Mr. Stevenson some papers relating to the lighthouse at the time. The form of the lighthouse is that of an immense pillar; the lower courses of stones are trenailed and wedged together with oak timber, to the height of upwards of forty feet, or throughout the solid part of the building. At the stone staircase leading from the door to the first floor, the walls are seven feet thick, and from this it gradually decreases upwards. The stones of the walls of the several apartments are connected at the ends with dove-tailed joints. The floors are formed of long stones radiating from the centre, and set in such a manner that the pressure of the floors upon the walls is perpendicular. In the stranger’s room or library, the roof takes an arched form, but the centre is cut only upon the interior end of the stones of the cornice, the several stones of which it is composed being all laid upon level beds.