But the inference from this similarity of speech is a different matter; one that the modern investigator, with a wider knowledge of the general phenomena of ethnological distribution, may venture to correct. The occupation of a mountain-range by the inhabitants of a plain country is a reversal of the usual order of events. It is far more likely that the mountaineers should have become refined under the influences of a fertile soil, milder climate, and an enlarged commerce, than that the Etruscans of Etruria should have become rude and barbarous. After all, however, the question is only one of degree. It is no opinion of Livy’s that the Rhætian Alps were colonized from the Etrurians of Tuscany. Their occupants must have been derived from the plains at their foot, from the Northern Etrurians of the Venetian territory and Lombardy; and whether these extended a little more or a little less in the direction of the Tyrol is unimportant. The primary fact is, that, according to the only cotemporary evidence existing, the Valley of the Adige was as Etruscan as the Valley of the Arno. How far the Etrurians south of the Tyrol were indigenous populations, or how far they were intrusive conquerors, is difficult, perhaps impossible, to determine. It is difficult, too, to say where they came in contact with the Ligurians, where they first encroached on the Umbrians, and what boundary separated them from the Venetians and Liburnians. Perhaps, we may give them all Lombardy, the western third of the Venetian territory, Parma, Modena, Bologna, and Ferrara, I think that in all these parts they were intrusive conquerors, and, _à fortiori_, that they were intrusive conquerors in Tuscany. In Ferrara, and the parts due north of the mouth of the Po, they were, for reasons which will appear in the sequel, _necessarily_ so. In Campania they were comparatively recent colonists. The western third of the Venetian territory may easily have been Etruscan, Rhætian, or Etrusco-Rhætian; the other two-thirds were _Liburnian_, or _Venetian_, the country of the Veneti and Liburni. The affinities of these populations, which were closely allied to each other, was with the Illyrians of Dalmatia. In other words, it was only in a political point of view that they were Italians at all. For some of the higher questions of ethnology, however, the _Liburni_ and _Veneti_ are tribes of exceeding importance.