Next to Carthage itself, the city of Utica was most celebrated as a place of commerce: it lay a short distance to the west of Carthage, and on the same bay. It had a large and convenient harbour; and after the destruction of Carthage, it became the metropolis of Africa Propria. Neapolis was also a place of considerable trade, especially with Sicily, from which the distance was so short, that the voyage could be performed in two days and a night. Hippo was a frontier town on the side of Numidia; though Strabo says, there were two of the same name in Africa Propria. The Carthaginian Hippo had a port, arsenal, storehouses, and citadel: it lay between a large lake and the sea. We have already noticed the etymological meaning of the word Cothon: that this meaning is accurate may be inferred from the word being applied to several artificial harbours in the Carthaginian dominion, besides that of Cartilage itself: it was applied to the port of Adrumetum, a large city built on a promontory,--and to the port of Thapsus, a maritime town, situated on a kind of isthmus, between the sea and a lake. The artificial nature, of this latter harbour is placed beyond all doubt, as there is still remaining a great part of it built on frames: the materials are composed of mortar and small pebbles, so strongly and closely cemented, that they have the appearance, as well as durability, of solid rock. It is singular, that in the dominions of Carthage, extending, as we have seen, upwards of 1400 miles along the shores of the Mediterranean, there should be no river of any magnitude or importance for commerce: the Bagrada and the Catada alone are noticed by ancient historians, and both of these were insignificant streams.