Lipsius in his work Zur Quellenkritik der Epiphanios (Vienna, 1865), has shown that the work of Hippolytus against thirty-two sects, the conclusion of which is still extant under the title of a homily against the heresy of Noetus, is the basis of the Philosophoumena, and can, to, a large extent, be reconstructed from it. See also Schaff, Church History, vol. 1, § 125; Hare, Contest with Rome, p. 214; Neander, History of Dogmas, 1, 51; Milman, Lat. Christ. 1, 66 sq.; Lardner, Works, 2, 409 sq.; Herzog, Real Encyklop. 6:131 sq.; Hoefer, Nouv. Biog. Géneralé 24, 777 sq.; Chambers, Cyclopaedia, 5, 376; and, for the Roman Catholic side, Wetzer und Welte, Kirchen Lexikonv 5, 210 sq.; Allgem. Real-Encyklop. d. Kathol. Deutschland, 5, 374. Early monographs on Hippolytus were written by Frommann, Intempret. New Test. ex Hippol. (Coblentz, 1765, 4to); C. G. Hianell, De Hippol. (Götting. 1838, 8vo); Heumann, Ubi et qualis episcop fuerit Hippolytus (Götting. 1737, 4to); Woog, Fragment. Hippolyti Martyris (Lips. 1762, 4to). On the earlier writings of Hippolytus, see Clarke, Succession of Sacred Literature, 1, 158; Eusebius, Hist. Eccles. 6, 20-23; Lardner, Credibility of the Gospel History, 2, 35; Tillemont, Memoires, etc., 3, 104; Neander, Ch. Hist, cent. 3 pt. 2, ch. 2, § 7.