Arcadia, on the other hand, in the heart of Peloponnese, retained till a late date a quite different dialect, akin to the ancient dialect of Cyprus, and more remotely to Aeolic. This distribution makes it clear (r) that the Doric dialects of Peloponnese represent a superstratum, more recent than the speech of Arcadia; (2) that Laconia and its colonies preserve features alike, -n and -w which are common to southern Doric and Aeolic; (3) that those parts of " Dorian " Greece in which tradition makes the pre-Dorian population " Ionic," and in which the political structure shows that the conquered were less completely subjugated, exhibit the Ionic -a and -ov; (4) that as we go north, similar though more barbaric dialects extend far up the western side of central-northern Greece, and survive also locally in the highlands of south Thessaly; (5) that east of the watershed Aeolic has prevailed over the area which has legends of a Boeotian and Thessalian migration, and replaces Doric in the northern Doris.
The common calendar and cycle of festivals, observed by all Dorians (of which the Carneia was chief), and the distribution in Greece of the worships of Apollo and Heracles, which attained pre-eminence mainly in or near districts historically " Dorian," suggest that these cults, or an important element in them, were introduced comparatively late, and represent the beliefs of a fresh ethnic superstratum.
The superstratum is the prestigious language influencing the emerging Creole from above, especially with regard to vocabulary.
Israeli revisionists contend that Yiddish, the revivalists ' mother tongue, is the substratum whilst Hebrew is only a superstratum.