[17] Evenings with the Romanists, pp. 221-223, London, 1854.
[18] Eastern sun-worship.
[19] Influence of Rome on Christianity, Hibbert Lectures for 1880, p. 33 ff.
[20] The Old Catholic Church, etc., W. D. Killen, D.D., pp. 44-6, Edinburgh, 1871.
[21] Lives of the Fathers, vol. i., pp. 350-1, Edinburgh, 1889.
[22] Four Lectures on Some Epochs of Early Church History, by Charles Merivale, D.D., Dean of Ely, pp. 149-155, New York, Randolph; no date.
[23] Ancient Symbol Worship, Westropp and Wake, pp. 94, 96, New York, 1874.
[24] Apostolic and Post-Apostolic Times, G. V. Lechler, D.D., pp. 262, 263.
[25] Cf. Hibbert Lectures for 1888, by Edwin Hatch, D.D., Lecture i.
[26] See The Gnostics and Their Remains, by C. W. King, M.A., p. 5, London, 1887.