While the Latin stock was thus tending towards union under the leadership of Rome and was at the same time extending its territory on the east and south, Rome itself, by the favour of fortune and the energy of its citizens, had been converted from a stirring commercial and rural town into the powerful capital of a flourishing country. The remodeling of the Roman military system and the political reform of which it contained the germ, known to us by the name of the Servian constitution, stand in intimate connection with this internal change in the character of the Roman community. But externally also the character of the city cannot but have changed with the influx of ampler resources, with the rising requirements of its position, and with the extension of its political horizon.

The amalgamation of the adjoining community on the Quirinal with that on the Palatine must have been already accomplished when the Servian reform, as it is called, took place; and after this reform had united and consolidated the military strength of the community, the burgesses could no longer rest content with entrenching the several hills, as one after another they were filled with buildings, and with possibly also keeping the island in the Tiber and the height on the opposite bank occupied so that they might command the course of the river. The capital of Latium required another and more complete system of defence; they proceeded to construct the Servian wall. The new continuous city-wall began at the river below the Aventine, and included that hill, on which there have been brought to light recently (1855) at two different places, the one on the western slope towards the river, the other on the opposite eastern slope, colossal remains of those primitive fortifications—portions of wall as high as the walls of Alatri and Ferentino, built of large square hewn blocks of tufo in courses of unequal height—emerging as it were from the tomb to testify to the might of an epoch, whose buildings subsist imperishably in these walls of rock, and whose intellectual achievements will continue to exercise an influence more lasting even than these.

The ring-wall further embraced the Caelian and the whole space of the Esquiline, Viminal, and Quirinal, where a structure likewise but recently brought to light on a great scale (1862)—on the outside composed of blocks of peperino and protected by a moat in front, on the inside forming a huge earthen rampart sloped towards the city and imposing even at the present day—supplied the want of natural means of defence. From thence it ran to the Capitoline, the steep declivity of which towards the Campus Martius served as part of the city-wall, and it again abutted on the river above the island in the Tiber. The Tiber island with the bridge of piles and the Janiculum did not belong strictly to the city, but the latter height was probably a fortified outwork. Hitherto the Palatine had been the stronghold, but now this hill was left open to be built upon by the growing city; and on the other hand upon the Tarpeian Hill, standing free on every side, and from its moderate extent easily defensible, there was constructed the new “stronghold” (-arx-, -capitolium-(10)), containing the stronghold-spring, the carefully enclosed “well-house” (-tullianum-), the treasury (-aerarium-), the prison, and the most ancient place of assemblage for the burgesses (-area Capitolina-), where still in after times the regular announcements of the changes of the moon continued to be made. Private dwellings of a permanent kind, on the other hand, were not tolerated in earlier times on the stronghold-hill;(11) and the space between the two summits of the hill, the sanctuary of the evil god (-Ve-diovis-), or as it was termed in the later Hellenizing epoch, the Asylum, was covered with wood and presumably intended for the reception of the husbandmen and their herds, when inundation or war drove them from the plain. The Capitol was in reality as well as in name the Acropolis of Rome, an independent castle capable of being defended even after the city had fallen: its gate lay probably towards what was afterwards the Forum.(12) The Aventine seems to have been fortified in a similar style, although less strongly, and to have been preserved free from permanent occupation. With this is connected the fact, that for purposes strictly urban, such as the distribution of the introduced water, the inhabitants of Rome were divided into the inhabitants of the city proper (-montani-), and those of the districts situated within the general ring-wall, but yet not reckoned as strictly belonging to the city (-pagani Aventinensis-, -Ianiculenses-, -collegia Capitolinorum et Mercurialium-).(13) The space enclosed by the new city wall thus embraced, in addition to the former Palatine and Quirinal cities, the two federal strongholds of the Capitol and the Aventine, and also the Janiculum;(14) the Palatine, as the oldest and proper city, was enclosed by the other heights along which the wall was carried, as if encircled with a wreath, and the two castles occupied the middle. The work, however, was not complete so long as the ground, protected by so laborious exertions from outward foes, was not also reclaimed from the dominion of the water, which permanently occupied the valley between the Palatine and the Capitol, so that there was perhaps even a ferry there, and which converted the valleys between the Capitol and the Velia and between the Palatine and the Aventine into marshes. The subterranean drains still existing at the present day, composed of magnificent square blocks, which excited the astonishment of posterity as a marvelous work of regal Rome, must rather be reckoned to belong to the following epoch, for travertine is the material employed and we have many accounts of new structures of the kind in the times of the republic; but the scheme itself belongs beyond doubt to the regal period, although presumably to a later epoch than the designing of the Servian wall and the Capitoline stronghold. The spots thus drained or dried supplied large open spaces such as were needed by the new enlarged city. The assembling-place of the community, which had hitherto been the Area Capitolina at the stronghold itself, was now transferred to the flat space, where the ground fell from the stronghold towards the city (-comitium-), and which stretched thence between the Palatine and the Carinae, in the direction of the Velia. At that side of the -comitium- which adjoined the stronghold, and upon the stronghold-wall which arose above the -comitium- in the fashion of a balcony, the members of the senate and the guests of the city had the place of honour assigned to them on occasion of festivals and assemblies of the people; and at the place of assembly itself was erected the senate-house, which afterwards bore the name of the Curia Hostilia. The platform for the judgment-seat (-tribunal-), and the stage whence the burgesses were addressed (the later rostra), were likewise erected on the -comitium- itself. Its prolongation in the direction of the Velia became the new market (-forum Romanum-). At the end of the latter, beneath the Palatine, rose the community-house, which included the official dwelling of the king (-regia-) and the common hearth of the city, the rotunda forming the temple of Vesta; at no great distance, on the south side of the Forum, there was erected a second round building connected with the former, the store-room of the community or temple of the Penates, which still stands at the present day as the porch of the church Santi Cosma e Damiano. It is a feature significant of the new city now united in a way very different from the settlement of the “seven mounts,” that, over and above the hearths of the thirty curies which the Palatine Rome had been content with associating in one building, the Servian Rome presented this general and single hearth for the city at large.(15) Along the two longer sides of the Forum butchers’ shops and other traders’ stalls were arranged. In the valley between the Palatine and Aventine a “ring” was staked off for races; this became the Circus. The cattle-market was laid out immediately adjoining the river, and this soon became one of the most densely peopled quarters of Rome. Temples and sanctuaries arose on all the summits, above all the federal sanctuary of Diana on the Aventine,(16) and on the summit of the stronghold the far-seen temple of Father Diovis, who had given to his people all this glory, and who now, when the Romans were triumphing over the surrounding nations, triumphed along with them over the subject gods of the vanquished. The names of the men, at whose bidding these great buildings of the city arose, are almost as completely lost in oblivion as those of the leaders in the earliest battles and victories of Rome.

Some of these statements may perhaps be correct; and it is apparently not the result of accident that the building of the new ring-wall is associated both as to date and author with the new organization of the army, which in fact bore special reference to the regular defence of the city walls. But upon the whole we must be content to learn from this tradition—what is indeed evident of itself—that this second creation of Rome stood in intimate connection with the commencement of her hegemony over Latium and with the remodeling of her burgess-army, and that, while it originated in one and the same great conception, its execution was not the work either of a single man or of a single generation. It is impossible to doubt that Hellenic influences exercised a powerful effect on this remodeling of the Roman community, but it is equally impossible to demonstrate the mode or the degree of their operation. It has already been observed that the Servian military constitution is essentially of an Hellenic type;(17) and it will be afterwards shown that the games of the Circus were organized on an Hellenic model. The new -regia-with the city hearth was quite a Greek -prytaneion-, and the round temple of Vesta, looking towards the east and not so much as consecrated by the augurs, was constructed in no respect according to Italian, but wholly in accordance with Hellenic, ritual. With these facts before us, the statement of tradition appears not at all incredible that the Ionian confederacy in Asia Minor to some extent served as a model for the Romano-Latin league, and that the new federal sanctuary on the Aventine was for that reason constructed in imitation of the Artemision at Ephesus.