In the present stage of philological science it is impossible to ascertain the precise dialect in which these Bulgarian monks wrote, though the reasonable assumption is that it was that of their native Thessalonica. But the existence of a distinct Slavic alphabet, the Glagolica, of which Cyril’s alphabet is but a simplification, and the existence of the Freisingen fragments which, although not older than from the eleventh century, are written in a variant dialect and obviously are based on documents preceding the activity of the proto-apostles, make it certain that Cyril and Methodius drew on an older literary stock or composed in a language which was already permeated by the Christian conceptions which were the common possession of the Čechs in Carolingian times. This is proved by the precious Kiev fragments, of the eleventh century, which contain the most primitive form of the Old-Slavic language and, at the same time, use distinctively Čech words of the Roman Catholic liturgy. It is, therefore, plausible that whatever dialect was later chosen by Cyril and Methodius in their religious activity in Moravia and Bohemia, it was based on the vocabulary which was already familiar to the Čechs from their previous relations with the German missionaries. The Slavic liturgy did not survive long in Bohemia. After the death of Methodius in 885 the Slavic priests were banished and Moravia and Bohemia became Roman Catholic once more. Only the Abbey of Sázava continued to use the Slavic liturgy until the year 1096, after which nothing more is heard of the Slavic Church. Cyril and Methodius, who had come to Moravia at the request of Prince Rostislav, had in 867 been accused by the German missionaries of heresy, which accusation, however, Pope Hadrian found to be groundless. But the Slavic activity could not be maintained against German arrogance, and, as it was Bishop Wiching who soon after the death of Methodius banished the Slavic liturgy from Bohemia, so it was in the eleventh century again German priests who destroyed the last vestige of the incipient Slavic culture. The Slavic liturgy left the country to become permanently associated with the Greek Catholic Church in Russia, Serbia, and Bulgaria. What might have formed a bond between the various Slavic nations had been senselessly destroyed in Bohemia by the machinations of the German clergy.