years of the Punic war when Hannibal drew his fresh recruits from the Po
Valley, the determination grew ever stronger that the Alps should become
Rome's barrier line on the North. Accordingly the pacification of the
Transpadane region continued with little intermission until Polybius[3]
could say two generations before Vergil's birth that the Gauls had
practically been driven out of the Po Valley, and that they then held but
a few villages in the foothills of the Alps. If this be true, the open
country of Mantua must have had but few survivors. And the few that
remained were not often likely to have the privilege of intermarrying
with the Roman settlers who filled the vacuum. Romans were too proud of
their citizenship to intermarry with _peregrini_ and raise children who
must by Roman laws forego the dignities of citizenship.[4]

[Footnote 3: Polybius, II. 35, 4 (written about 140 B.C.).]

[Footnote 4: Ulpian, _Dig_. V. 8, ex peregrino et cive Romano, peregrinus
nascitur.]

A Celtic strain of romance has been from time to time claimed for
Vergil's poetry, though those who employ such terms seldom agree in their
definition of them. His romanticism may be more easily explained by
his early devotion to the Catullan group of poets, and the Celtic
traits--whatever they may be--by the close racial affiliations between
Celts and Italians, vouched for by anthropologists. But the difficulty of
applying the test of the "Celtic temperament" lies in the fact that there
are apparently now no true representatives of the Celtic race from
whom to establish a criterion. The peoples that have longest preserved
dialects of the Celtic languages appear from anthropometric researches
to contain a dominant strain of a different race, perhaps that of the
pre-Indo-European inhabitants of Western Europe. It may be, therefore,