On the side of the dock stands a crane, which is used for various purposes connected with the shipment and discharging of materials. It also serves for raising the booms, by means of a double hook, which can be attached to the chain and which embraces the pegs in the centre of each boom, shewn in Plate XI. The two tiers of booms are firmly lashed down by means of chains passing through ring-bolts in the manner shewn in the section (Plate XI.), so as to prevent their rising with the tide. The necessity of providing somewhere in the neighbouring island of Tyree for the proper accommodation of the vessel which was to wait upon the Lighthouse (if it could ever have been a matter of doubt), was abundantly demonstrated by the experience of 1843, and more especially by that of the months of November and December. Owing to the shortness of the day and the distance of any place of shelter from the Skerryvore, together with the difficulty of landing on the Rock and the extreme variableness and uncertainty of the climate, the Regent Tender, although constantly waiting on the coast and making trials on every occasion that seemed to offer any prospect of success, could not effect any communication with the people who had been left on the Rock, during a period of no less than seven _long_ weeks. The poor seamen who were living in the Barrack passed that time most drearily, for not only had their clothes been literally worn to rags, but they suffered the want of many things dearer to them than clothes, and amongst others of tobacco, the failure of the supply of which they had despondingly recorded in chalk on the walls of their prison-house, with the date of the occurrence! Unless, therefore, the vessel had been stationed near the rock, the few casual and uncertain opportunities which occur at intervals, during the short days of winter, would often have been lost, and the future maintenance of the Light rendered excessively precarious. The experience of subsequent years, during which the relief of the Light-keepers has been kept up with considerable regularity, shews that the small Harbour at Hynish forms a most important integral part of the Establishment of Skerryvore, than which I believe no Lighthouse on the coast is more comfortable as a residence. ~Bo Pheg Beacon.~