That an altar stood at the middle of this platform is proved by a relief with a representation of the north side of the Forum, found on the base of a chapel of the Lares in the house of the wealthy Pompeian, L. Caecilius Jucundus. At the left we see the arch near the façade and a strip of wall connecting it with the temple; next a corner of the platform with an equestrian statue; then a flight of steps, and the front of the platform with an altar at the middle; finally the other flight of steps and another equestrian statue in a position corresponding with that of the first. The columns shown in the relief do not agree in number or style with those of the façade of the temple, but such inaccuracies are common in ancient representations of buildings, and there can be no doubt that the temple of Jupiter is represented; the relief has, in fact, been used in making our restoration of the arch at the left (Fig. 13). Both the portico and the cella no doubt had a coffered ceiling. Just in front of the doorway, which was fifteen Roman feet wide, are the large stones with holes for the pivots on which the massive double doors swung (indicated in Fig. 18); the doors here were not placed in the doorway, but in front of it, and were besides somewhat larger, so that the effect was rendered more imposing when they were shut. The ornamentation of the cella was especially rich. A row of Ionic columns, about fifteen feet high, stood in front of each of the longer sides; the entablature above them probably served as a base for a similar row of Corinthian columns, the entablature of which in turn supported the ceiling. On the intermediate entablature, between the columns of the upper series, statues and votive offerings were doubtless placed. The floor about the sides was covered with white mosaic, of which scanty remains have been found; the marble pavement of the centre (inside of the dotted line, Fig. 18) has wholly disappeared. [Illustration: Fig. 20.--Section of the wall decoration in the cella of the temple of Jupiter.] A section of the wall decoration, in the second Pompeian style, is shown in Fig. 20. We notice here the characteristic elements--imitation of marble veneering, with large red central panels and a cornice above. The base with its simple dividing lines upon a black ground was painted over in the third style; originally it must have been more suggestive of real construction, with a narrow painted border along the upper edge.