the Po and at the mouths of that river Etruscans and Umbrians were mingled, the former as the dominant, the latter as the older race, which had founded the old commercial towns of Atria and Spina, while the Tuscans appear to have been the founders of Felsina (Bologna) and Ravenna.  A long time elapsed ere the Celts crossed the Po; hence the Etruscans and Umbrians left deeper traces of their existence on the right bank of the river than they had done on the left, which they had to abandon at an early period.  All the regions, however, to the north of the Apennines passed too rapidly out of the hands of one nation into those of another to permit the formation of any continuous national development there.

Etruria

Far more important in an historical point of view was the great settlement of the Tuscans in the land which still bears their name.  Although Ligurians or Umbrians were probably at one time(5) settled there, the traces of them have been almost wholly effaced by the Etruscan occupation and civilization.  In this region, which extends along the coast from Pisae to Tarquinii and is shut in on the east by the Apennines, the Etruscan nationality found its permanent abode and maintained itself with great tenacity down to the time of the empire.  The northern boundary of the proper Tuscan territory was formed by the Arnus; the region north from the Arnus as far as the mouth of the Macra and the Apennines was a debateable border land in the possession sometimes of Ligurians, sometimes of Etruscans, and for this reason larger settlements were not successful there.  The southern boundary was probably formed at first by the Ciminian Forest, a chain of hills south of Viterbo, and at a later period by the Tiber.  We have already(6) noticed the fact that the territory between the Ciminian range and the Tiber with the towns of Sutrium, Nepete, Falerii, Veii, and Caere appears not to have been taken possession of by the Etruscans till a period considerably later than the more northern districts, possibly not earlier than in the second century of Rome, and that the original Italian population must have maintained its ground in this region, especially in Falerii, although in a relation of dependence.

Relations of the Etruscans to Latium

From the time at which the river Tiber became the line of demarcation between Etruria on the one side and Umbria and Latium on the other, peaceful relations probably upon the whole prevailed in that quarter, and no essential change seems to have taken place in the boundary line, at least so far as concerned the Latin frontier.  Vividly as the Romans were impressed by the feeling that the Etruscan was a foreigner, while the Latin was their countryman, they yet seem to have stood in much less fear of attack or of danger from the right bank of the river than, for example, from their kinsmen in Gabii and Alba; and this was