The article deals with the results of dialect correspondence surveys from the beginning of the 1950s that were carried out in the north-eastern and central Bohemian regions and confronts these results with newer data from the Czech Linguistic Atlas. On the basis of several selected dialect phenomena, it shows the continuous decline of the traditional dialect proceeding from the archaic dialect peripheries to the centre of the country. In this way, it depicts the dialect situation on the border of the north-eastern and central Bohemian regions and shows evidence of the transitive character of the central Bohemian dialect region. It contains 5 maps.