But we now come, in the last place, to the foundation of a cult of a very different kind from these, and of far greater import than any of them in the history of Roman religious experience. We have seen that the temple of Diana on the Aventine meant the transference of the headship of the Latin league from Aricia to Rome. When Rome took over this headship, and by removing its religious centre to Rome--or, perhaps more accurately, by offering Diana of Aricia a new home by the Tiber--removed also any danger of a new power growing up in Latium outside her own influence, she seems to have taken another important step in the same direction. Archaeological evidence confirms the tradition that at this time the temple of Jupiter Latiaris, the real and original god of the league, on the Alban hill, was rebuilt;[494] and as the remains of its foundation are of Etruscan workmanship, we may believe that the work was undertaken at that period of an Etruscan dominion in Rome which no one now seriously doubts, and which is marked by the Etruscan name Tarquinius, and by the old tradition that Servius Tullius was really an Etruscan bearing the Etruscan name Mastarna.[495] Now those in power at Rome at this time, whoever they were, not content with rebuilding the ancient temple of Jupiter on the Alban hill, conceived the idea of also building a great temple at Rome, on the steep rock overlooking the Forum, to the same deity of the heaven who had long presided over the Latin league. The tradition was that this temple was vowed by the first Tarquinius, begun by the second, and finally dedicated by the first consul Horatius in the year 509.[496] It is quite possible that this tradition indicates the truth in outline--that it was an Etruscan who conceived the idea of the great work, and that the foreign domination gave way to a Roman reaction before the temple was ready for dedication. We cannot know what exactly was the Etruscan intention as to the cult; but we know that the temple was built in the Etruscan style, that its foundations were of Etruscan masonry,[497] and that the deities inhabiting it were three--a _trias_--a feature quite foreign to the native Roman religion.[498] Jupiter, Juno, and Minerva had each a separate dwelling (_cella_) within the walls of the temple, which, in order to meet this innovation, was almost as broad as it was long. Whether this trias was the one originally intended by the Etruscan king or kings it is impossible to say; but I have great doubts of it. I confess that I have no ground but probability to go on when I conjecture that a long period elapsed between the beginning of this great undertaking and the final completion, and that in the meantime many things had happened of which we have no record; that when the temple was finished it was in Roman hands, though retaining its Etruscan characteristics, and especially the combination of three deities; and that those three deities were essentially Roman in conception. Roman,