dialect which is still quite on the level of the Greek of the early Middle Ages, evidently going back to the time of the settlements in the country of the old monks, which can be proved, in the region of Cæsarea, to go back in many cases as far as the 4th century B.C. These dialects,[21] however, are, as compared with those larger and continuous regions where common Greek is spoken, only small and distinct islands of the Greek speech, which are constantly wearing away and giving up ground, more and more, although the proportion of Greeks in these regions is much higher than elsewhere. The ratio is highest in Pontus, where there are nearly 250,000 Greeks (25 to 30 per cent of the population), and where they form a large percentage even of the city population, especially in Trebizond and Samsun. On the contrary, in Cappadocia they are to be found settled only in a large number of villages, comprising altogether something like 40,000 souls.[22] The number of these Greeks in Pontus as well as in Cappadocia is, furthermore, all the harder to fix accurately, because there are among them many communities of Christians who conceal the fact that they are Christians, and, for political reasons, pass as adherents of Islam (even making use of the Turkish language), but who are really devoted to Christianity and have kept up their Greek national feeling. In Pontus they are especially to be found in the districts of Tonia and Ophis, where in the seventies of the last century they were estimated at about 14,000, while in other districts, as in Krom and Torul, a strong process of Christianizing them anew has taken place.[23]