The arches are supported by marble columns, or rather fragments of columns,--all the mutilated antique trunks rummaged out of Italica. For a shaft of insufficient length a piece is found of the dimensions required to make up the deficiency, and placed on its top without mortar or cement. Some of the capitals are extremely curious. Among them almost every style may be traced, from the Hindoo to the Composite: but no one is entire, nor matched with any part of the column it was originally destined to adorn. Over this gallery is the open terrace, which continues that of the palace side on the same level. The view extends in all directions, including the gardens and the surrounding country; for we are here at the extremity of the town. At the furthest end the edifice widens, and forms an open saloon, surrounded with seats, glittering with the bright hues of the _azulejos_. From these terraces you look down on the portion of the garden in which the royal arms are represented, formed with myrtle-hedges. Eagles, lions, castellated towers,--all are accurately delineated. Myrtle-hedges are also used in all parts of the gardens as borders to the walks. It is a charming evening's occupation to wander through the different enclosures of these gardens, which, although not very extensive, are characterised by so much that is uncommon in their plan and ornaments, that the lounger is never weary of them. Nor is the visible portion of their attractions more curious than the hidden sources of amusement and--ablution, by means of which an uninitiated wanderer over these china-paved walks, may be unexpectedly, and more than necessarily refreshed. By means of a handle, concealed--here in the lungs of some bathing Diana in the recesses of her grotto--here in the hollow of a harmless looking stone--an entire line of walk is instantaneously converted into a stage of hydraulics--displaying to the spectator a long line of embroidery, composed of thousands of silver threads sparkling in the sunshine, as issuing from unseen apertures in the pavement they cross each other at a height of a few feet from the ground, forming an endless variety of graceful curves. Almost all the walks are sown with these _burladores_, as they are termed. A large portion of the grounds consists of an orange-grove, varied with sweet lemon-trees. The trees are sufficiently near to each other to afford universal shade, without being so thickly planted as to interfere with the good-keeping of the grass, nor with the movement of promenading parties. In the centre of this grove is a beautiful edifice,--a square pavilion entirely faced, within and without, with the _azulejos_, with the exception only of the roof. Around it is a colonnade of white marble, enclosing a space raised two feet above the ground, and surrounded by a seat of the same mosaic. The interior is occupied by a table, surrounded with seats.