NOTE.--This list is for the most part that adopted by Dr. Bryce, _Holy Roman Empire_; but the dates might be slightly varied by reference to Duchesne, K. Mueller, and Funk (Weltzer and Welte, _Kirchenlexicon_). It may also be noted that the popes were frequently not elected till the year after the death of their predecessors. {209} APPENDIX II A SHORT BIBLIOGRAPHY I. A list of original authorities for the whole of the period 461-1003 would be too long in proportion to the text of this book, but a few of the most important may be mentioned for the sake of those who wish to begin to study the period at first hand. Any such study should include:-- Evagrius, ed. Bidez and Parmentier, 1898. Zachariah of Mitylene [translation], ed. Hamilton and Brooks, 1899. Bede, ed. Ch. Plummer, 1895. Procopius, ed. Haury (in course of publication). Joannes Diaconus, _Vita S. Gregorii_, ed. Migne, and _Zeitschrift fuer Katholische Theologie_, XI., 158-73. Gregory the Great, _Letters_, ed. Ewald and Hartmann, 1887, etc. Paulus Diaconus, ed. Waitz, 1878. _Monumenta Moguntina_, ed. Jaffe, 1866. Gregory of Tours, ed. Arndt and Krusch, 1884-5. _Liber Pontificalis_, ed. Duchesne, 1886-92. _Liudprand_, ed. Duemmler, 1877. _Letters of Gerbert_, ed. Havet, 1889. _Regesta Pontificum Romanorum_, ed. Jaffe, 1851, 2nd ed. 1885. Mansi, _Concilia_, 1759-98. Einhard, _Vita Caroli Magni_, ed. Pertz and Waitz, 1880. II. Reference to the other authorities can be most easily found through modern works, from which the following is a selection:--