3. Theology: Chief work, A. Ehrhard in Krumbacher's _Geschichte der byz. Lit._ pp. 1-218. For the ancient period, cf. the works on Greek patrology (under article FATHERS OF THE CHURCH). Collective edition of the Fathers (down to the 15th century); _Patrologia, series Graeca_ (ed. by Migne, 161 vols., 1857-1866). Church poetry: A collection of Greek Church hymns was published by W. Christ and M. Paranikas, entitled _Anthologia Graeca carminum Christianorum_ (1871). Many unedited texts, particularly the songs of Romanos, were published by Cardinal J. B. Pitra, under the title _Analecta sacra spicilegio Solesmensi parata_ (1876). A complete edition of the hymns is edited by K. Krumbacher. 4. Historical literature: A collective edition of the Byzantine historians and chroniclers was begun under Louis XIV., and continued later (1648-1819), called the _Paris Corpus_. This whole collection was on B. G. Niebuhr's advice republished with some additions (Bonn, 1828-1878), under the title _Corpus scriptorum historiae Byzantinae_. The most important authors have also appeared in the _Bibliotheca Teubneriana_. A few Byzantine and oriental historical works are also contained in the collection edited by J. B. Bury (1898 seq.). 5. Vernacular Greek literature: The most important collective editions are: W. Wagner, _Medieval Greek Texts_ (1870), _Carmina Graeca Medii Aevi_ (1874), _Trois Poemes grecs du moyen age_ (1881); E. Legrand, _Collection de monuments pour servir a l'etude de la langue neo-hellenique_ (in 26 parts, 1869-1875), _Bibliotheque grecque vulgaire_ (in 8 vols., 1880-1896). (K. Kr.) III. MODERN GREEK LITERATURE (1453-1908)