The First Series of the Nicene and Post-Nicene Library of the Christian Fathers, containing, in fourteen volumes, the principal works of St. Augustin and St. Chrysostom, has been completed in less than four years, according to the Prospectus of the Publisher issued in 1886. I am happy to state that the Second Series, containing the chief works of the Fathers from Eusebius to John of Damascus, and from Ambrose to Gregory the Great, will be issued on the same liberal terms, as announced by the Publisher. The present volume opens the Second Series with a new translation and critical commentary of the historical works of Eusebius, by my friends, Dr. Arthur C. McGiffert and Dr. Ernest C
