During winter the men were busy in the work-yard preparing the stones and laying them course by course upon a stone basement, equal to the foundation course of the lighthouse. Here the stones were fitted into their places, and carefully numbered and marked as they were to lie in the building; a necessary operation, the several courses being dove-tailed and connected together, so as to form one mass from the centre to the circumference of the building. The stones were also bored or fixed with trenails of oak and joggles of stone, after the manner of the Eddystone lighthouse, and in this state they were laid aside, and in readiness for being shipped in lighters for the rock. Considering the importance of a light on the Bell Rock, it was at first determined that the whole outward casing of the lighthouse should be of granite, and that sand-stone should be used only for the interior work; but from the difficulty of procuring a sufficient supply of granite, it was afterwards found necessary to restrict the use of it to the lower courses of the building. The granite was from the Rubislaw quarry, and was so compact, that it contained only about thirteen and a half cubic feet to the ton. The sand-stone was from the Mylnefield quarry, and contained fifteen feet to the ton. As soon as the weather would permit, the operations of the second season commenced at the rock. The arrangements for carrying on the works were made on an improved scale. A new vessel (named the Sir Joseph Banks) was provided as a tender for lodging the workmen off the rock, instead of the floating-light. The new tender was well supplied with cooking apparatus, provisions, water, fuel, &c.; the space not used as birthage, &c. was occupied with casks of lime, cement, and other articles required for the work. The advantage of this new arrangement was, the ease with which the tender could be brought to the lee side of the rock, to take the people on board at any emergency; whereas, the floating-light, being moored as a guide to shipping, could not be moved about so easily, to serve the purposes of the workmen. Every precaution was also taken to render the praam-boats or stone-lighters buoyant, for such was the presentiment of danger attached to the landing department, that, in addition to a water-tight lining, each praam was provided with twelve strong empty casks, which were stored in the hold, and were sufficient to float and render her buoyant in case of accident. The praams therefore became so many life-boats, moored in the neighbourhood of the rock. The Sir Joseph Banks was also furnished with large landing boats and a life-boat.