While the workmen were at breakfast and dinner, it was the writer’s usual practice to spend his time on the walls of the building, which, notwithstanding the narrowness of the track, nevertheless formed his principal walk, when the Rock was under water. But this afternoon he had his writing-desk set upon the store-room floor, when he wrote to Mrs Stevenson, certainly the first letter dated from the Bell Rock Light-house, giving a detail of the fortunate progress of the work, with an assurance that the Light-house would soon be completed at the rate at which it now proceeded; and the Patriot having sailed for Arbroath in the evening, he felt no small degree of pleasure in dispatching this communication to his family.
Friday, 15th.
Floors of the Bell Rock and Edystone Light-houses.
The floor-courses of the Bell Rock Light-house lay horizontally upon the walls, as will be seen from the sections in Plates [VII.] and [XVI.] They consisted in all of 18 blocks, but only 16 were laid in the first instance, as the centre-stone were necessarily left out, to allow the shaft of the balance-crane to pass through the several apartments of the building. In the same manner also, the stone which formed the interior side of the man-hole, was not laid till after the centre stone was in its place, and the masonry of the walls completed. The number of stones above alluded to are independently of the sixteen joggle pieces with which the principal blocks of the floors were connected, as shewn in the diagrams of Plates [VII.] and [XIII.] The floors of the Edystone Light-house, on the contrary, were constructed of an arch-form, and the haunches of the arches bound with chains, to prevent their pressing outward, to the injury of the walls. In this, Mr Smeaton followed the construction of the Dome of St Paul’s; and this mode might also be found necessary at the Edystone, from the want of stones in one length, to form the outward wall and floor, in the then state of the granite quarries of Cornwall. At Mylnefield Quarry, however, there was no difficulty in procuring stones of the requisite dimensions; and the writer foresaw many advantages that would arise, from having the stones of the floors to form part of the outward walls without introducing the system of arching: in particular, the pressure of the floors upon the walls would thus be perpendicular; for, as the stones were prepared in the sides, with groove-and-feather, after the manner of the common house-floor, they would, by this means, form so many girths, binding the exterior walls together, as will be understood by examining the diagrams and section of [Plate VII.], with its letter-press description; agreeably to which he had modelled the floors in his original designs for the Bell Rock, which were laid before the Light-house Board in the year 1800.
31 Persons lodged in the Beacon-house.
Pay and Premiums at the Rock.
The weather still continuing favourable for the operations at the Rock, the work proceeded with much energy, through the exertions both of the seamen and artificers. For the more speedy and effectual working of the several tackles, in raising the materials as the building advanced in height, and there being a great extent of Railway to attend to, which, required constant repairs, two additional mill-wrights were added to the complement on the Rock, which, including the writer, now counted thirty-one in all. So crowded was the men’s barrack, that the beds were ranged five tier in height, allowing only about 1 foot 8 inches for each bed, while the greatest extent of floor-room measured only about 8 feet 6 inches across, between the beds on opposite sides, as will be seen in the sections and diagrams of [Plate VIII.] The artificers commenced this morning at 5 o’clock, and, in the course of the day, they laid the Forty-eighth and Forty-ninth courses, consisting each of 16 blocks. From the favourable state of the weather, and the regular manner in which the work now proceeded, the artificers had generally from four to seven extra hours’ work, which, including their stated wages of 3s. 4d., yielded them from 5s. 4d. to about 6s. 10d. per day, besides their board; even the postage of their letters was paid while they were at the Bell Rock. In these advantages, the foremen also shared, having about double the pay and amount of premiums of the artificers. The seamen being less out of their element in the Bell Rock operations than the landsmen, their premiums consisted in a slump sum, payable at the end of the season, which extended from three to ten guineas.
Seamen find one of the lost sets of moorings.
As the laying of the floors was somewhat tedious, the landing-master and his crew had got considerably beforehand with the building artificers in bringing materials faster to the Rock than they could be built. The seamen having, therefore, some spare time, were occasionally employed, during fine weather, in dredging or grappling for the several mushroom-anchors and mooring-chains, which had been lost in the vicinity of the Bell Rock, during the progress of the work, by the breaking loose and drifting of the floating-buoys. To encourage their exertions in this search, Five Guineas were offered as a premium for each set they should find; and after much patient application, they succeeded to-day in hooking one of these lost anchors with its chain.
Experiment of collecting Gas from Fishes.