Note 153 — Chapter III · CAMPAIGN AGAINST THE HELVETII. (Year of Rome 696.) (Book I. of the “Commentaries.”)

The limits of Illyria, in the time of Cæsar, are hardly known; yet it appears that this province comprised the modern Istria and part of Carniola. Aquileia was its capital, situated at the head of the gulf of the Adriatic Sea, not far from the Isonzo. In fact, Strabo (I., p. 178) says that Aquileia was situated without the frontiers of the Veneti, in whose territory this town was included under Augustus. On another side, Titus Livius (XXXIX. 55) informs us that the colony of Aquileia had been founded in Istria; and Herodotus (I. 196), as well as Appian, reckons the Istrians among the peoples of Illyria.