I shall have occasion to refer to this work in the elucidation of the Liturgies which are to follow. If it be, as Bishop Lightfoot supposes, a homily of the second century, it may lend important retrospective aid to the student of these volumes in other particulars; but, having entrusted this interesting relic to the editorial care of a most competent scholar, I shall not presume to anticipate his judgment in any matter.