The minute details given in my account of the destruction of the first Barrack, have entirely superseded the need for any particular description of the fitting up of the second Barrack on the Rock; and I shall therefore confine myself to a brief notice of the work in the chronological order in which it occurred. On the 1st of July, after the level floor for the foundation of the Tower had been roughly cleared, and all risk of injury from the firing of mines was past, the boring of holes for the fixtures of the second Barrack was begun; and so great were our exertions, that in the short period of fourteen days, the pyramidal frame-work on which the Barrack-house was to stand (see Plate V.), consisting of 13 beams, of about 50 feet in length, with all their braces, ties and stancheons, and the malleable iron cap which secured their union at the top, was firmly fixed on the Rock. After the pyramid was completed, the Barrack-house (which had previously been removed from North Bay, where, as already noticed, it had served as a temporary abode for the men who opened the quarries there), was transported, piece-meal, from Hynish to the Rock as required; for it was not considered prudent, after the experience of last year, to trust, even in the finest part of the season, a great quantity of timber to _lashings_ on the Rock. The fitting-up of the Barrack-house was completed on the 3d September and occupied only eleven days; so that the whole work extended to only twenty-five days, a remarkably short time for such a work, in such a situation. That despatch, indeed, was only obtained by working (as we did both during the excavation of the foundation and the erection of the Barrack), at all times when the weather would permit, from four o’clock in the morning till eight, and even nine in the evening, with an interval of only half-an-hour for breakfast and the same for dinner. The erection of the Barrack was a work of great difficulty and anxiety; for, as every thing depended on the exact union of all its parts, the slightest error in any dimension would have stopped the work until it could be remedied, a delay which, in such a situation, would, at certain stages of its progress, have proved fatal to the whole structure. I cannot, therefore, omit this opportunity of paying a tribute, in passing, to the memory of the late Mr George Middlemiss, the foreman of the carpenters who fitted up the Barrack, whose zeal for the completion of the work was very conspicuous. Poor Middlemiss died very suddenly at Hynish, about a fortnight after the completion of his labours on the Rock. He had received some instructions from me, so late as 11 o’clock, on the night of the 20th September; and when one of the men went to call him next morning at 6 o’clock, he was found dead, and in such a state as led Mr Moxey, the surgeon attached to the works, after a careful examination, to conclude, that he had died of paralysis of the heart, about three