Among the many services done the cause of historical research by Mr. John Richard Green, whose premature loss all lovers of history are mourning, the last and not the least was to point out in his own matchless language the part played by the Keltic Church in the conversion of the English to Christianity. I wish to emphasise his hint on the greatness of the part played by the Keltic Churches—to show how far reaching it was in its effects; and that, after the time of S. Augustine, amidst great difference of opinion, there was no touch of antagonism between the Keltic and Italian missions.