Along the south front of the building from east to west runs a gallery or corridor about four hundred feet in length, and eighteen in width, lighted on one side by twenty-five lofty arched windows, having on the other side ten doors, opening into the suite of picture galleries, or rather halls. These occupy the centre of the building, and are lighted from above by vast lanthorns. They are eight in number, varying in length from fifty to eighty feet, but all forty feet in width and fifty feet in height from the floor to the summit of the lanthorn. The walls will be hung with silk damask, either of a dark crimson or a dark green--according to the style of art for which the room is destined. The ceilings are vaulted, and the decorations are inexpressibly rich, composed of magnificent arabesques, intermixed with the effigies of celebrated painters, and groups illustrative of the history of art, &c., all moulded in white relief upon a ground of dead gold. Mayer, one of the best sculptors in Munich, has the direction of these works. Behind these vast galleries, or saloons, there is a range of cabinets, twenty-three in number, appropriated to the smaller pictures of the different schools: these are each about nineteen feet by fifteen in size, and lighted from the north, each having one high lateral window. The ceilings and upper part of the walls are painted in fresco, (or distemper, I am not sure which,) with very graceful arabesques of a quiet colour;--the hangings will also be of silk damask. Of the principal saloons, the first is appropriated to the productions of modern and living artists, and has three cabinets attached to it. The second will contain the old German pictures, including the famous Boisserée gallery, and has four cabinets attached to it. The third, fourth, and fifth saloons (of which the central one, the hall of Rubens, is eighty feet in length) are devoted, with the nine adjoining cabinets, to the Flemish and Dutch schools. The sixth, with four cabinets, will contain the French and Spanish pictures; and the seventh and eighth, with three cabinets, will contain the Italian school of painting. All these apartments communicate with each other by ample doors; but from the corridor already mentioned, which opens into the whole suite, the visitor has access to any particular gallery, or school of painting, without passing through the others: an obvious advantage, which will be duly estimated by those who, in visiting a gallery of painting, have felt their eyes dazzled, their heads bewildered, their attention distracted, by too much variety of temptation and attraction, before they have reached the particular object or school of art to which their attention was especially directed.