But with a statesmanlike sagacity, from which the succeeding generations might have drawn a lesson, the leading men of the Roman commonwealth perceived that all these coast fortifications and coast garrisons could not but prove inadequate, unless the war marine of the state were again placed on a footing that should command respect. Some sort of nucleus for this purpose was already furnished on the subjugation of Antium (416) by the serviceable war-galleys which were carried off to the Roman docks; but the enactment at the same time, that the Antiates should abstain from all maritime traffic,(19) is a very clear and distinct indication how weak the Romans then felt themselves at sea, and how completely their maritime policy was still summed up in the occupation of places on the coast. Thereafter, when the Greek cities of southern Italy, Neapolis leading the way in 428, were admitted to the clientship of Rome, the war-vessels, which each of these cities bound itself to furnish as a war contribution under the alliance to the Romans, formed at least a renewed nucleus for a Roman fleet. In 443, moreover, two fleet-masters (-duoviri navales-) were nominated in consequence of a resolution of the burgesses specially passed to that effect, and this Roman naval force co-operated in the Samnite war at the siege of Nuceria.(20) Perhaps even the remarkable mission of a Roman fleet of twenty-five sail to found a colony in Corsica, which Theophrastus mentions in his "History of Plants" written about 446, belongs to this period. But how little was immediately accomplished with all this preparation, is shown by the renewed treaty with Carthage in 448. While the stipulations of the treaty of 406 relating to Italy and Sicily(21) remained unchanged, the Romans were now prohibited not only from the navigation of the eastern waters, but also from that of the Atlantic Ocean which was previously permitted, as well as debarred from holding commercial intercourse with the subjects of Carthage in Sardinia and Africa, and also, in all probability, from effecting a settlement in Corsica;(22) so that only Carthaginian Sicily and Carthage itself remained open to their traffic. We recognize here the jealousy of the dominant maritime power, gradually increasing with the extension of the Roman dominion along the coasts. Carthage compelled the Romans to acquiesce in her prohibitive system, to submit to be excluded from the seats of production in the west and east (connected with which exclusion is the story of a public reward bestowed on the Phoenician mariner who at the sacrifice of his own ship decoyed a Roman vessel, steering after him into the Atlantic Ocean, to perish on a sand-bank), and to restrict their navigation under the treaty to the narrow space of the western Mediterranean--and all this for the mere purpose of averting pillage from their coasts and of securing their ancient and important trading connection with Sicily.