In other respects, also, there is absolutely no proof to support the supposition of a migration of peoples upon the Grecian peninsula. The “Mycenæan” civilisation was not, as has been supposed, suddenly destroyed by an incursion of uncivilised tribes, but was gradually merged into the civilisation of the classic period. Even Attica, in connection with which there is no tradition of a migration, had its period of Mycenæan culture. The so-called “Doric” institutions are limited to Crete and Laconia, and in the latter country they are not older than the Spartan conquest in the eighth century; hence they have nothing whatever to do with the Doric migration. In the same way the serfdom of the Thessalian peasants may very well have been the result of an economic development, like the colonia during the Roman empire or serfdom in Germany after the end of the Middle Ages. Also the differentiation of the Grecian dialects came about, as we saw, after the colonisation of Asia Minor, and hence should not be traced back to the migrations which took place within the Grecian peninsula at some time preceding this period. And, in any case, after the Dorians settled in the Peloponnesus they must have adopted the dialect of the original inhabitants of the country, who were so far superior to them in numbers and civilisation; just as no one doubts that the Thessalians did the same after their immigration into the Peneus river basin. A “religion of the Doric race,” however, exists only in the imagination of modern scholars; Hercules himself, the ancestral god of the Dorians, is of Bœotian origin. Finally, it is extremely doubtful if the Argives and Laconians were any more closely related to each other than to the other Grecian tribes--the so-called Doric Phyleans, at least, have until now been traced only in Argolis and in the Argolian colonies. But even if a closer relationship did exist between the two neighbouring tribes, it would by no means necessarily follow that the Argo-Laconian people first immigrated into the Peloponnesus at a time when the eastern part of the peninsula had already reached a comparatively high grade of civilisation. There is indeed no question but that the Peloponnesus got its Hellenic population from the north, that is directly from middle Greece; and it is very probable that, even after the Peloponnesus was already in the possession of the Greeks, tribal displacements still took place in Greece. But they occurred in so remote a period that they have left no distinguishable trace, even in tradition. If the Greeks of Asia Minor remembered only the bare fact of their immigration, how could a tradition have been maintained of tribal wanderings which took place long before this colonisation? It is an idle task to try to discover the direction of these migrations or the more particular circumstances under which they took place.