Realizacja jerów w cerkiewnosłowiańskich, ewangelicznych tekstach drukowanych

The article deals with the problem of the yers reflected in two Church Slavonic printed Gospels: the first completed printed edition of the Church Slavonic Bible – The Ostrog Bible (1581) and the18th century altar Gospel (1771) printed in Kiev Pechersk Lavra but kept in Orthodox monastery in Jabłeczna (south-east Poland). The analysis has shown, that BO and EJ present some compatibility typical for the Ruthenian languages – yers strong position vocalization and weak position reduction. However, despite being part of one Ruthenian Recension, yers reflection in both texts was not always the same – the biggest differences were noticed in съ-, въ-, въз-, въс- prefixes, combinations such as *lьst, *lьn, *nьsk and secondary yers records.