But moreover it is supported by particular instances. Troy, for example, had its Pergama on a lofty part of the site where it stood: and from the epithets αἰπείνη, ὀφρυόεσσα, ἠνεμόεσσα, applied to the name Ἴλιος but never to Τροίη (of course I mean when this latter word is used for the city, the only class of cases in point), it may justly be inferred that Ilus[148] built the Pergama when he migrated into the plain. But the wall surrounding the entire city was only built in the next generation, under King Laomedon, who employed Neptune and Apollo for the purpose. Another, and perhaps more marked instance, is to be found in the case of Thebes. We know from Thucydides[149] that Bœotia was, from its openness and fertility, more liable to revolutions from successive occupancy than other parts of Greece. With this statement a passage of the Odyssey[150] is in remarkable accordance. Homer tells us that Amphion and Zethus, probably among the very earliest Hellic immigrants into Middle Greece, first settled on the site of Thebes; and, he adds specially, that they fortified it. But apparently it could not have been the usual practice of the time to surround entire cities, at least, with fortifications, because he goes on to assign the special reason for its being done in this case, namely, that, even powerful as they were, they could not hold that country, so open (εὐρύχορος, Od. xi. 265) and rich, except with the aid of walls. This would appear to be a case like the Λαρίσση ἐριβώλαξ of the seventeenth Iliad, and both alike were probably exceptions to the general rule. I have now done with the direct notices of the Pelasgi in Homer. But we have still a considerable harvest of indirect notices to gather. Particularly, in discussing the meaning of the name Ionians, we shall hereafter find reason to suppose that Homer’s Athenians were Pelasgic: and I propose here to refer to some similar indications with respect to the Arcadians. _The Arcadians in Homer._ Like the Pelasgians, the Arcadians are, as we have seen, happy in never being mentioned without Homer’s commendation. In Il. ii. 611 they are ἐπιστάμενοι πολεμίζειν. In Il. vii. 134 they are ἐγχεσίμωροι. _The Arcadians Pelasgian._