This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either part of the original artifact, or were introduced by the scanning process. We believe this work is culturally important, and despite the imperfections, have elected to bring it back into print as part of our continuing commitment to the preservation of printed works worldwide. We appreciate your understanding of the imperfections in the preservation process, and hope you enjoy this valuable book. The English reader has now, in the first three volumes of this Library, a complete collection of the historical writings of the Fathers, whose permanent value, as sources, is universally acknowledged. Several of them have never before appeared in English. The unavoidable delay in the publication of the third volume has been very annoying to the general editors and publishers, but the subscribers will be amply compensated by the addition of the writings of Rufinus, which were not promised in the prospectus. It is encouraging that this difficult and costly enterprise is beginning to be duly appreciated by competent judges on both sides of the Atlantic.