We need not describe in detail the temple of Castor, or rather of the "Twin Brethren," which stands immediately to your left, or that of the deified Julius Caesar, which is just behind you, on the spot where the body of the great dictator was burned. It is perhaps more interesting to note the ordinary--though not by any means the only--form of the Roman temple in general. Those who have seen the so-called Maison Carrée at Nimes will possess a fair notion of the commonest or most typical shape and arrangement. For the most part we have a rather lofty platform, mounted from one end by steps, which are flanked by walls or balustrades, often bearing at their extremities equestrian statues or other appropriate figures. Upon the platform stands the temple proper, consisting of a chamber containing the statue of the god. Where more than one deity are combined in the same temple--as in that of Jupiter on the Capitoline Hill, where the supreme deity has Juno and Minerva to left and right of him--there may either be as many separate chambers or as many chapel-like bays as there are deities. The altar for sacrifice stands outside opposite the entrance, being placed either upon the top of the main platform or more commonly on a minor platform of its own in the middle of the steps. In most cases the chamber stands back behind a row, in some instances two rows, of columns, which support the characteristic entablature seen in the illustrations. In the case of the more grandiose temples a series of columns may run all round the building, carrying an extension of the roof, under which is thus formed a covered colonnade. More commonly the sides and back of the chamber have only what are known as "engaged" columns, as it were half-embedded in the wall. The roof is gabled and tiled, with ornaments along the eaves. The front has an embellished entablature, with its triangle of masonry called the "pediment," consisting of a cornice overhanging a sunken surface decorated with a sculptured group. Over each angle, right, left, and summit, is a base of stone supporting some conspicuous ornament, such as a statue, an eagle, or a figure in a chariot. In the middle of the front of the building, behind the columns of the portico, are double doors, commonly made of decorated bronze, with an open grating of the same metal above them. The whole is outwardly of marble, either all white or with colour in the pillars, but the core of at least the platform is commonly made of the immensely strong Roman concrete, or else of blocks of the less beautiful and costly kinds of stone.