Our view agrees with classic authority. Tacitus (xii. 24) describing the pomœrium or boundary of Roma Quadrata, which went round the base of the hill on the level below, thus showing its shape, says: "The first outline began at the Ox-Market, where still is to be seen the brazen statue of a bull, that animal being commonly employed at the plough. From that place a furrow was carried on of sufficient dimensions to include the great Altar of Hercules. By boundary stones, fixed at proper distances, the circuit was continued along the foot of Mount Palatine to the Altar of Consus, extending thence to the Old Curiæ; next, to the Chapel of the Lares." These buildings were built after Roma Quadrata, with the exception of the Altar of Hercules, and are mentioned by Tacitus to mark the line; they existed when he wrote. Ovid ("Fasti," iv. 825) says: "Pressing the tail of the plough, he traces out the walls with a furrow; a white cow with a snow-white bull bears the yoke." Dionysius (i. 88) says: "Romulus called the people to a place appointed, and described a quadrangular figure about the hill, tracing with a plough, drawn by a bull and a cow yoked together, one continued furrow." Taking these authors for our guides, we can easily trace the line of the pomœrium. Commencing at the Forum Boarium, which site is well known, it went down to the Altar of Hercules, which must have also been in the Forum Boarium, "in the spot where a part of the city has its name derived from an ox" (Ovid, "Fasti," i. 581). Taking in this altar, it passed under the Palatine's southern side to the Ara Consi, which Tertullian ("De Spec." v.) tells us was buried in the circus at the first meta. It here turned to the east, passing along the valley which then existed, along our imaginary line; for it is ridiculous to suppose that it would have passed right across the Palatine had the hill been then what it is now. From the Altar of Consus it extended past the Old Curiæ, which we think may be seen in the tufa walls under the south end of the Palace of Domitian (19), then to the Chapel of the Lares, which stands at the head of the Sacra Via below the Palace of Domitian (17).
"Ædem Larum in Summa Sacra Via" ("Mon. Ancyr."). "Ancus Martius (habitavit) in Summa Sacra Via, ubi ædes Larum est" (Solinus, i. 24). "Romulus built a temple to Jupiter, near the gate called Mugonia, which leads to the Palatine Hill from the Sacra Via" (Dionysius, ii. 30). The Sacred Way did not pass through the Arch of Titus, as is generally supposed, but passing by it led up to the Palatine—this can be seen by examining the stones—and was then called Clivus Palatinus. A large piece of the pavement still exists on the Palatine, leading up to the Ædem Larum, and which road is miscalled Nova Via. The road leading from the Arch of Titus to that of Constantine was called the Clivus Triumphalis.
Hence the furrow must have passed under the north side of the Palatine, and down the west side to where it began; for Tacitus's account says, "Hence to the Forum which was added by Tatius." This furrow marked the bounds of the city, within which were the walls, the city itself occupying the hill above.
The remains of the walls of Roma Quadrata existing are sufficient to show us their exact line, for we have remains on four different sides, and, curious enough, at three of the angles. On the west and east sides it appears to have been built up to support the scarped cliff and above it; but on the south it ran along the edge on the top of the cliff—the valley below, beyond the pomœrium, being then the Murzian Lake. Along the southern cliff it was not a solid wall, but had embrasures, through which a balista or catapult might be fired upon an enemy below—the remains of which are still existing. These are the oldest Roman arches, being older than the Cloaca of Tarquin or the arches of Ancus Martius.
"But Romulus had formed the idea of a city rather than a real city; for inhabitants were wanting" (Florus, i. 1).
The principal roadway upon the Palatine was the Nova Via, a new way, evidently made after the Via Sacra, and simply called Nova Via without any distinguishing name being given to it. It commenced at the Porta Mugonia on the east, inside Roma Quadrata, and was here called Summa Nova Via. "Tarquinius Priscus ad Mugoniam Portam supra Summam Novam Viam" [habitabat] (Solinus, i. 24). From this point it went along the north and down the west side past the gate—there being steps down from the gate to the road. The descent off the hill was called the Hill of Victory. "Sed Porta Romana instituta est a Romulo infimo Clivo Victoriæ" (Festus). "Quæ habet gradus in Nova Via" (Varro). Passing by the Porta Romana it turned to the left, or west, under the Palatine to the Velabrum, where it ended. This part was called Infima Nova Via. "Aius Loquens in Infima Nova Via" (Varro, "Ap. Gell." xvi. 17). This altar still exists at the south-west corner under the Palatine. "Hoc Sacrificium [to Larentia] fit in Velabro, qua in novam Viam exitur" (Varro, "Ling. Lat." vi.).
ROMA QUADRATA.
5, 6, 7, 8, 13, 19, 36, 37, 38, 39, 40, 41.
Romulus, the son of Rhea Silvia and Mars, founded Rome on the Palatine Hill, above the Tiber, 753 B.C., on the site of the Arcadian city of Evander, near the Lupercal, where the wolf had given him suckle. The city was built after the Etruscan rites, and surrounded by a massive wall, in a quadrangular form, whence it was called Roma Quadrata. See "Walls of Rome," [page xvii] .