“Between the cornice and the floor the space is filled with the bookcases and galleries of access, the cornice, standards, and railings of which are wholly gilded, the panels of the soffites of the latter being blue, having gilded ornaments therein.” It will have been observed that the original draft of Panizzi’s scheme proposed to provide space for a larger number of readers than was ultimately found advisable. The problem of accommodating readers was, indeed, less momentous than that of accommodating books; and any account of Panizzi’s edifice would be most imperfect which did not take some notice of his solution of this latter difficulty. As already stated, the space in which the new Reading-Room was to be erected was quadrangular, while the room itself was to be circular. The quadrangle is 335 feet by 235; the diameter of the dome of the Reading-Room, as ultimately constructed, was 140 feet. The circle thus inscribed in the quadrangle left, consequently, ample space for the construction of additional rooms. After deducting a clear space of from 27 to 30 feet left, for the sake of air and light, between the exterior of the new building and the inner wall of the original Museum, the former was still 258 feet by 184, equivalent to an area of 47,472 square feet. The amount of this space external to the Reading-Room (about three-eighths of the whole) was occupied:—1. By a circular gallery in four tiers, including the basement storey, carried entirely round the Reading-Room. 2. By four corridors in three tiers, each forming a quadrangle parallel with the interior walls of the original Museum structure. 3. By four apartments of triangular shape, filling up the spaces left vacant between the circle and the quadrangle in which it was inscribed. Accommodation was thus provided for about 1,200,000 books, or five times as many as the Museum had possessed when Panizzi became Keeper. This result was obtained by great economy of space, there being no walls except the exterior wall, the partitions being formed by the books themselves arranged fore-edge to fore-edge, except against the external wall, the shelves of double bookcases being divided longitudinally by a wire lattice. These shelves are placed between grooved uprights of galvanized iron, and upon metal pins inserted into holes made for the purpose in the wooden lining of the grooves. Sufficient space is left between these rows of bookcases to admit of the passage of two barrows, and the entire remaining space is available for the storage of books. The roof is glass, and the flooring of the galleries is formed of open iron gratings to allow of the transmission of light to the basement. The presses are everywhere of the same dimensions, eight feet by three, so that each gallery is eight feet high. The shelves are made of zinc covered with leather, the multiplicity of perforations in the wooden lining of the uprights allowing of their being placed apart at any interval required, and, thanks to Mr.