The question of chronology must next be considered. That the developed Geometrical style succeeds to the Mycenaean, and forms a link between it and the early Attic attempts at black-figured ware, of which we shall subsequently treat, is sufficiently clear. It may also be laid down that the Dipylon ware represents the last stage of Geometrical decoration, being in point of fact too far advanced to be regarded as a purely typical Geometrical ware. Such data as the finding of iron in the tombs, or the evidence of finds at Troy,[966] also tend to place the beginning of the style at least as early as the tenth century. It has also been noted that the figures correspond closely with the bronzes of Olympia which are dated about the ninth century, and this, if accepted, necessitates placing the simpler linear decoration back as far as the tenth. The lower limits of the style may be roughly fixed by the evidence from the tombs of Etruria, discussed in Chapter XVIII., at about 700 B.C. Next, there is the evidence afforded by the ships,[967] which it should be noted are all of the bireme or διήρης form, with two banks of oars. The invention of the trireme, as we learn from Thucydides (i. 13, 5), was due to Ameinokles, about the year 704 B.C. Hence Kroker’s dating of the Dipylon vases about the year 700 can hardly be accepted. But the eighth century may be taken as representing the latest period of the Geometrical pottery, both in Attica and Boeotia. The curious inscription engraved on a Dipylon vase from Athens is dealt with elsewhere (Chapter XVII.); undoubtedly the earliest known Attic inscription, its value as evidence is limited to that of a _terminus ante quem_, from the fact that it was probably engraved at a subsequent time to the manufacture of the vase. The question of centres of manufacture is one that has already been the subject of some discussion,[968] the result of which has been to show that there is no complete homogeneity in the wares from different sites, and consequently no one central fabric. The colossal funerary vases, which, it may be remarked in passing, stand at the head of a long line of funerary fabrics and show the Athenian fondness for this class of vase,[969] were not, and could not have been, generally exported, in spite of the notable exception at Curium. The ordinary wares might have been made in some one place (probably a Dorian centre, not Attica or Boeotia); but we have seen that most finds, as in Rhodes, present local peculiarities.[970] Athens at this period was not sufficiently advanced to become the centre of large potteries, and did not become so, as we shall see, before the age of the Peisistratidae; such vases as were made were strictly confined to special purposes. It is a curious fact that very little Geometrical ware was found on the Acropolis.