EDITIONS.--There is a complete edition of Erigena's works in J.P. Migne's _Patrologiae cursus completus_ (vol. cxxii.), edited by H.J. Floss (Paris, 1853). The _De divina praedestinatione_ was published in Gilbert Mauguin's _Veterum auctorum qui nono saeculo de praedestinatione et gratia scripserunt opera et fragmenta_ (Paris, 1650). The commentary ("Expositiones") on Dionysius' _Hierarchiae caelestes_ appeared in the _Appendix ad opera edita ab A. Maio_ (ed. J. Cozza, Rome, 1871). Of the _De divisione naturae_, editions have been published by Thomas Gale (Oxford, 1681); C.B. Schluter (Munster, 1838); and in Floss's _Opera omnia_; there is a German translation by Ludwig Noack, _Johannes Scotus Erigena uber die Eintheilung der Natur_ (3 vols., 1874-1876). Erigena was also the author of some poems edited by L. Traube in _Monumenta Germaniae historica. Poetae Latini aevi Carolini_, iii. (1896). A commentary on the _Opuscula sacra_ of Boetius is attributed to him and edited by E.K. Rand (1906). Monographs on Erigena's life and works are numerous; see St Rene Taillandier, _Scot Erigene et la philosophie scholastique_ (1843); T. Christlieb, _Leben u. Lehre des Johannes Scotus Erigena_ (Gotha, 1860); J.N. Huber, _Johannes Scotus Erigena_ (Munich, 1861); W. Kaulich, _Das speculative System des Johannes Scotus Erigena_ (Prague, 1860); A. Stockl, _De Joh. Scoto Erigena_ (1867); L. Noack, _Uber Leben und Schriften des Joh. Scotus Erigena: die Wissenschaft und Bildung seiner Zeit_ (Leipzig, 1876); R.L. Poole, _Medieval Thought_ (1884), and article in _Dictionary of National Biography_; T. Wotschke, _Fichte und Erigena_ (Halle, 1896); M. Baumgartner in Wetzer and Welte's _Kirchenlexikon_, x. (1897); Alice Gardner's _Studies in John the Scot_ (1900); J. Draseke, _Joh. Scotus Erigena und seine Gewahrsmanner_ (Leipzig, 1902); S.M. Deutsch in Herzog-Hauck's _Realencyklopadie fur protestantische Theologie_, xviii. (1906); J.E. Sandys, _Hist. of Classical Scholarship_ (1906), pp. 491-495. See also the general works on scholastic philosophy, especially Haureau, Stockl and Kaulich. An admirable resume is given by F.D. Maurice, _Medieval Phil._ pp. 45-79. (R. Ad.; J. M. M.)