The Eddystone and the Bell Rock Lighthouses having been, as it were, the forerunners of the class of lighthouse that required to be built on rocks exposed to the full fetch of heavy seas, many more of the same sort have since been erected off the coasts of Great Britain and Ireland. That of Skerryvore, which is situated in the Atlantic, west of the Island of Tiree in Argyllshire, is regarded as probably the finest specimen of lighthouse architecture in the world. This lighthouse was the creation of Alan Stevenson, who succeeded his father, Robert, as Engineer to the Northern Lighthouse Board, and it is interesting to know that the designing and engineering of the Northern Lighthouses has now been in the hands of the Stevenson family for more than a hundred years, Mr David Alan Stevenson, one of the grandsons of Robert, now holding the position of Engineer to the Board. But the family is not altogether indebted to lighthouse engineering for its fame, as the late talented and lamented writer and novelist, Robert Louis Stevenson, who made a world-wide name for himself, was another grandson of the Bell Rock Engineer. It is not necessary to say more about lighthouses, but I considered it desirable to give a short description of one or two of the most notable, including that of the Bell Rock, in which these Notes were written, to show from what limited sources a man of intelligence and keen observation can procure subjects of surpassing interest to engage his attention, as well as to instruct and amuse others. The Lighthouse Authorities of the United Kingdom are the Trinity House for England, the Commissioners of Northern Lighthouses for Scotland, and the Commissioners of Irish Lights for Ireland. The Trinity House exerts a certain control over the Scottish and Irish Boards, particularly as to the site and character of lights proposed by them, and the Board of Trade holds the financial control of all three. The Boards are not all similarly constituted, the members of the Trinity House being mostly men of nautical knowledge, while those composing the Irish Board are mostly connected with the Corporation of Dublin. The Commissioners of Northern Lighthouses are the Lord Advocate and the Solicitor-General for Scotland, the Lord Provosts of Edinburgh, Glasgow, Aberdeen, and Dundee; the Provosts of Greenock, Inverness, Campbeltown, and Leith; the eldest Bailies of Edinburgh and Glasgow--and the Sheriffs of the maritime counties of Scotland. The origin of the Board dates from 1786, and it was incorporated by an Act of Parliament passed in 1798. The primary and general object of the three Boards is the erection and maintenance of lighthouses and other sea marks, such as beacons and buoys, for the security of navigation and the saving of life and property. The funds for these objects are got by levying tolls on shipping.