The present wall space for pictures, which amounts to about 16,920 superficial feet, would, by the proposed additions and alterations, reach 54,720 feet; and ample space would be provided for sculpture, casts, &c., as well as for the schools, lecture-rooms, libraries, and other accommodation required by each department, so that the business of the schools need not be interrupted, as is now the case at the Royal Academy, during the entire period of the annual exhibition of modern productions. The addition, which I would propose to make in front of the existing building for the purpose of masking its deformity, and shutting out of view from the south all the unsightly objects on the rising ground at the back which are now seen above it, would be in the Italian style of architecture, about 430 feet in length and nearly 100 feet in height, with flanking towers about 30 feet square, rising to a height of 130 feet. The composition would consist of two orders of architecture in the façade generally, and three in the towers, elevated upon a lofty arcaded ground story, affording covered access to the building for carriages to the extent of 100 feet in length. In the centre of the front in each of the orders above the ground story I would propose open loggiæ, about 100 feet long, to enable visitors to enjoy the view to the south, and obtain a little fresh air as a relief to the often oppressive and wearisome effect produced by an inspection of very extensive galleries of works of art. The cost of such additions and alterations as I have suggested would probably amount to about 135,000_l._, and as the Royal Academy would be much benefited by the increased and improved accommodation that they would afford, a portion of its funded property might fairly be required as a contribution to that expenditure, and the remainder might be reasonably looked for from Parliament, as being for the permanent accommodation of a new national institution. Such a building as that proposed, upon such a noble and commanding site as that of Trafalgar Square, could not fail to have a very striking effect, and would dominate over that portion of the Metropolis, as the Vatican does over Rome. FOURTHLY. As regards the present Museum of Economic Geology, in Jermyn Street. This institution occupies a good, well-frequented, and nearly central position, and has recently been formed by the country at an expenditure of about 40,000_l._ It contains 112 squares of building, including a fine theatre for lectures, a mineralogical museum, and good accommodation for various scientific purposes.