In the first place, the Romans (as we have already shown in our account of the Carthaginian commerce,) had several treaties with the Carthaginians, which may properly be called commercial treaties, before the first Punic war. The earliest treaty, according to Polybius himself, was dated about 250 years before the war; and in this treaty the voyages undertaken by the Romans on account of trade to Africa, Sardinia, and that part of Sicily at that time possessed by the Carthaginians, are expressly mentioned and regulated. The second treaty, about 100 years before the first Punic war, is not so specific respecting commerce. The third treaty, occasioned by the invasion of Italy by Pyrrhus, points out a decline in the naval power of the Romans; for it stipulates, that the Carthaginians should furnish them with ships, if required, either for trade or war. Secondly, seventy-four years before the first Punic war, the Romans having subdued the Antiates, and thus become masters of their fleet, among which were six armed with beaks, the tribune was ornamented with these beaks, the ships to which they belonged were burnt, and the others were brought to Rome and laid upon the place allotted to the building and preservation of ships. Lastly, the circumstances which gave rise to the war between the Romans and Tarentines, to which we have already adverted, plainly prove that Polybius is wrong in his assertion. Valerius, who commanded the Roman fleet, which was attacked by the Tarentines, according to Livy, was one of the _duumviri navales_, officers who had been already appointed nearly thirty years (that is, nearly fifty years before the first Punic war), on the motion of Decius Mus, expressly for the purpose of equipping, repairing, and maintaining the fleets. From these circumstances, it appears that the Romans possessed ships both for war and commerce, previous to the commencement of their wars with the Carthaginians, though it is extremely probable that their commerce was very limited, and for the most part carried on in vessels belonging to the other maritime nations of Italy, and that their ships of war were very small and rude in their construction and equipment. It is foreign to the object of this work to enter into a detail of the wars between the Romans and the Carthaginians: but as the great efforts of the Romans to become powerful at sea were made during these wars; as these efforts, being successful, laid the foundation of the future commerce of Rome; and as by the destruction of Carthage, in some measure caused by the naval victories gained by the Romans, the most commercial nation of antiquity was utterly ruined, and their commerce transferred to Rome, it will be proper briefly to notice the naval contests between these rival powers during the three wars in which they were engaged.