How much it prevailed among the Romans we learn from Seneca. [580]Magnorum fluviorum capita veneramur--coluntur aquarum calentium fontes; et quædam stagna, quæ vel opacitas, vel immensa altitudo sacravit. It mattered not what the nature of the water might be, if it had a peculiar quality. At Thebes, in Ammonia, was a fountain, which was said to have been cold by day, and warm at night. Ἡ κρηνη [581]καλειται του ἡλιου. _It was named the fountain of the Sun._ In Campania was a fountain Virena; which I should judge to be a compound of Vir-En, and to signify ignis fons, from being dedicated to the Deity of fire, on account of some particular quality. I accordingly find in [582]Vitruvius, that it was a medicinal spring, and of a strong vitriolic nature. The Corinthians had in their Acropolis a [583]Pirene, of the same purport as Virena, just mentioned. It was a beautiful fountain sacred to Apollo, whose [584]image was at the head of the water within a sacred inclosure. We read of a Pyrene, which was a fountain of another nature; yet of the same etymology, however differently expressed. It was a mountain, and gave name to the vast ridge called Saltus Pyrenæi. It is undoubtedly a compound of [585]Pur-ain, and signifies a fountain of fire. I should imagine, without knowing the history of the country, that this mountain once flamed; and that the name was given from this circumstance. Agreeably to this, I find, from Aristotle de Mirabilibus, that here was formerly an eruption of fire. The same is mentioned by Posidonius in Strabo; and also by Diodorus, who adds, [586]Τα μεν ορη δια το συμβεβηκος κληθηναι Πυρηναια. _That the mountains from hence had the name of Pyrenæi._ Mount Ætna is derived very truly by Bochart from Aituna, fornax; as being a reservoir of molten matter. There was another very antient name, Inessus; by which the natives called the hill, as well as the city, which was towards the bottom of it. The name is a compound of Ain-Es, like Hanes in Egypt; and signifies a fountain of fire. It is called Ennesia by Diodorus, who says that this name was afterwards changed to Ætna. He speaks of the city; but the name was undoubtedly borrowed from the mountain, to which it was primarily applicable, and upon which it was originally conferred: [587]Και την νυν ουσαν Αιτνην εκτησαντο, προ τουτου καλουμενην Εννησιαν. Strabo expresses the name Innesa, and informs us, more precisely, that the upper part of the mountain was so called, Οι δε [588]Αιτναιοι παραχωρησαντες την Ιννησαν καλουμενην, της Αιτνης ορεινην, ᾡκησαν. _Upon this, the people, withdrawing themselves, went and occupied the upper part of Mount Ætna, which was called Innesa._ The city Hanes, in Egypt, was of the same etymology; being denominated from the Sun, who was styled Hanes. Ain-Es, fons ignis sive lucis. It was the same as the Arab Heliopolis, called now Mataiea. Stephanas Byzantinus calls the city Inys: for that is manifestly the name