There are blank windows on the north side of the principal staircase that would have to be cut through to light the new room, and additional light could be admitted if necessary. On the south of the projected new room is a narrow room, ninety-four feet by twenty-four (No. 3), designated as the Roman Gallery, the light of which is very defective, especially on the side of the windows opening under the front colonnade. The Collections of Antiquities contain some large objects, more interesting archæologically than artistically, for which light on each side of them is very desirable. If the wall now separating the staircase from No. 3 were removed, and pilasters or columns substituted (the upper part of that wall in the floor above might likewise be removed if desirable), a room ninety-four feet by sixty, giving an area of five thousand six hundred and forty feet, admirably adapted for antiquities of this kind, would be obtained. [Sidenote: TRUSTEES’ PRESENT OFFICES.] At the western extremity of the Roman Gallery (No. 3), and turning southward, are the Trustees’ room (No. 4), two rooms for clerks (No. 5 and 6), and the study of the Principal-Librarian (No. 7). It is proposed to remove all the partition walls inside the space occupied by No. 4, 6, and 5, and by the corridor on the east of No. 4, and to open windows on the west side at the same height, and uniform with those in the gallery No. 17, of which this part of the building would then be a continuation, opening a communication like that on the corresponding side on the east (between No. 56 and 63). The Egyptian Gallery might thus be extended to the total length of four hundred and sixty-five feet. [Sidenote: NEW BUILDINGS ON NO. 11.]