Dion Cassius records (liv. 8) that Augustus built an arch in commemoration of the Parthian treaty near the Temple-Tomb of Cæsar. This is borne out by Maii, an interpreter of Virgil ("Æn." viii. 606), who says the Arch of Augustus was near to the temple of the deified Julius. The "Mirabilia" mentions it, and gives the same site: "Templum Minervæ cum arcu conjunctum est ei, nunc autem vocatur Sanctus Laurentius de Mirandi;" that is, the Temple of Antoninus Pius and Faustina, now the Church of San Lorenzo in Miranda. Accordingly, it was on the right of the Temple of Cæsar. Between it and the Temple of Antoninus the following inscription on marble was found in 1540-46:-- SENATVS . POPVLVSQVE . ROMANVS IMP . CAESARI . DIVI . IVLI . F . COS . QVINCT COS . DESIGN . SEX . IMP . SEPT REPVBLICA CONSERVATA. (Gruter, ccxxvi. 5.) It is doubtful whether this refers to the Arch of Augustus or to the Temple of Cæsar, both having been built by Augustus. A coin of Augustus represents this arch, with the legend, CIVIB . ET . SIGN . MILIT . A . PART . RECVP. In the early part of 1884, on the Via Sacra, near the Temple of Antoninus, some thirty travertine _voussoirs_--which formed part of an arch, the diameter of which was 12 feet 17 inches--were brought to light. So far, the excavations do not show where this arch stood; but when the road between the Temples of Cæsar and Antoninus is cut away, we may hope to find the site. THE ROSTRA JULIA. [Illustration: PLAN OF THE ROSTRA, AND TEMPLE-TOMB OF CÆSAR.] We know from Dion Cassius that Cæsar encouraged the popular business to be carried on at the lower end of the Forum, and that he turned the steps of the Temple of Castor into a temporary rostra. On this becoming popular he built a new rostra, which was called the plebeian rostra or Rostra Julia. We learn from Suetonius that it was before the Temple of Cæsar. Cicero, speaking from it against Mark Antony, bids his audience look to the (_their_) left at the gilt equestrian statue of Antony which stood before the Temple of Castor. [Illustration: HADRIAN ADDRESSING THE PEOPLE FROM THE ROSTRA JULIA.] This is one of the most interesting spots in the Forum. Cæsar built the second rostra with its rear towards the Forum, represented by the darker lines in the above plan. In front, towards the curved edge, Antony spoke, Cæsar's body being on the level below. The body was burnt and buried "in the Forum in that place visible from the old monumental Regia of the Romans. On the spot was placed an altar _where now_ is the Temple of Cæsar" (Appian, ii. 42). "The same men were erecting a tomb in the Forum who had performed that irregular funeral" (Cicero, "First Phil." ii.).