This was also the origin of the ancient Roman harbour dues, which were originally imposed only on goods for sale (promercale), and not on those which passed to and from Ostia for the shipper’s own use, and thus were really a tax on trade. And hence, to anticipate, arose the relatively early appearance of coined money in Rome and the commercial treaties with states over-sea. Thus, from this point of view at any rate, Rome may be regarded as the legend implies, rather as a created than a gradually developed town and rather as the youngest than the oldest of the Latin towns. Doubtless the land had been already to some extent brought under cultivation and towns planted on the Alban hills as well as many other heights of the surrounding country when the Latin frontier emporium rose on the Tiber.
Whether it was a decree of the Latin confederacy, or the genius and insight of some unknown founder, or the natural development of commerce, which called the city of Rome into existence, we have not even grounds to conjecture. But there is another point to be observed in connection with the position of Rome as the emporium of Latium. When history begins to dawn upon us Rome stands in contrast to the league of the Latin communities as a single enclosed city. The Latin custom of dwelling in open villages and only using the common town as a fortress and place of assembly or in time of need, was, in all probability, far sooner restricted in the Roman province than anywhere else in Latium. Not that the Roman had ceased to manage his farm himself, or to regard it as his real home; but already the unhealthiness of the country air had had the effect of inducing him to fix his abode on the more airy and healthy heights of the town; and with the farmers a numerous non-agricultural population of foreigners and natives must have been established there for a long time. This to some extent accounts for the dense population of the Roman territory, which at most can only be reckoned as extending over 115 square miles of soil, part of it marsh and sand, and yet, according to the city’s oldest constitution, furnished a city militia of thirty-three hundred freemen, and therefore must have counted at least ten thousand free inhabitants.
But there is something more. Everyone acquainted with the Romans and their history is aware that the peculiarity of their public and private existence lies in their municipal and commercial life, and that the distinction between them and other Latins, and Italian nations generally, is before all the distinction between the citizen and the farmer. It is true that Rome was not a mercantile city like Corinth or Carthage; for Latium is an essentially agricultural district and Rome was, and remained, above everything a Latin town. But the distinction of Rome above the crowd of other Latin towns must still be referred to her commercial position and to the influence of that position upon the character of her citizens. If Rome was the emporium of the Latin district, it is easy to understand that here, over and above the Latin husbandry, a vigorous municipal life quickly developed itself and so laid the foundation of her pre-eminence. The tracing of the course of this mercantile and strategic development of the city of Rome is far more important and far easier than the thankless task of making a chemical analysis of the insignificant and very similar communities of antiquity; we can follow this development to some extent in the traditions concerning these successive walls and fortifications of Rome, whose erection must have gone hand in hand with the advance of the Roman commonwealth to importance as a city.
Both in former and recent times many attempts have been made to give an historical character to the legend that the three different communities which composed the ancient Roman nation once dwelt within separate walls on the Seven Hills; but the scientific inquirer is obliged to banish it to the same regions as the battle of the Palatine and the graceful story of Tarpeia.
There exists, it is true, a real and very decided distinction between the fortification of the Capitol and the erection of the town walls. The Capitol is in name and fact the Acra of Rome, the town with one gate and a town fountain, the carefully fenced “spring house” (tullianum). That this fortification dates far back to a time when as yet there was no settlement at all in this neighbourhood, is shown by a custom which was scrupulously observed down to a late period, and according to which private houses did not and perhaps were not allowed to stand on the twin peaks of the Capitol.
On the other hand the town contained a treasure chamber with the archives, the prison, and the oldest place of assembly for the councillors as well as the citizens. The space between the two peaks of the Capitoline Hill, the sanctuary of the angry Jupiter (Vediovis) or as it was called in the later hellenising period, the Asylum, was covered with a wood and evidently originally intended to shelter the peasants and their flocks when flood or war drove them from the plain.
In Rome, as everywhere else, the urban settlement must have begun not within but below the citadel; when it was considerable enough to call for the protection of a wall and moat, the town proper first came into being outside the Capitol, and to this, again, suburbs were added, and as these also prospered and required to be defended, new walls were added and in the marshes a new dike, until a whole series of such separate circumvallations surrounded the citadel. It was the memory of this which was preserved in the “festival of the Seven Hills” (Septimontium), whose celebration was continued long after the ancient fortifications had ceased to exist.
The “seven circles” are the Palatine; the Cermalus, a branch of the Palatine extending towards the swamp (Velabrum) which in early days stretched between it and the Capitol; the Velia, the ridge which connected the Palatine with the Esquiline and afterwards almost completely disappeared owing to the constructions erected under the empire; the three summits of the Esquiline, Oppius, Cispius, and Fagutal; and finally the Secusa or Subura, an ingenious stronghold on the low ground between the Capitol, the Esquiline, and the Palatine. It is obvious that these walls did not spring up all at once. According to credible witnesses the oldest constructions only embrace the Palatine or the primitive Rome, called at a later period “the square” (Roma quadrata) from the shape of the Palatine Hill which was that of an irregular square. The gates and walls of this ancient urban circle remained visible down to the time of the empire; the position of two of them, namely the Porta Romana, near S. Giorgio in Velabro, and the Porta Mugionis at the arch of Titus, are still known to us, and the wall encircling the Palatine is even described by Tacitus from his own observation, at least on the side facing the Aventine and the Cælian. Although, of course, the earliest seat of the trade of the community was not here but at the citadel, still there are sufficient indications to show that this was the centre and the original seat of the urban settlers. On the Palatine was to be found its holy symbol, the so-called “outfit vault” (mundus) in which they had deposited all the requisites of a household and added a handful of their beloved native earth. Here too stood the building in which the curiæ assembled, each at its own altar, for religious and other purposes (curiæ veteres). Here too was the sanctuary of “the wolves” (lupercal), the house of assembly for “the leapers” (curia saliorum), and the dwelling of Jupiter’s priest. It was on and round this hill that the legend of the founding of the city was principally localised, and the believer was shown the straw-covered house of Romulus, the shepherd’s hut of his foster-father Faustulus, the holy fig tree on to which the coffer containing the twins was driven, and other similar relics.
The Palatine was, and remained, the most aristocratic quarter of the city and therefore subsequently gave its name to the first Servian district. The oldest offshoots may have been the settlement on the branch of the Cermalus and the Velian heights, both of which were immediately connected with the Palatine and, under the Servian division of the town, were apparently included in the Palatine quarter. The position of the suburb on the Cermalus, between the town wall and that of the citadel, as well as the designation of the principal street by the name of “the Tuscan,” seems to indicate that this settlement was not voluntary but reserved for the custody of colonists of foreign race.