Note 347 — Chapter III · THE ORIGIN OF GNOSTICISM
Reading edition
Book IV. c. 4, passim, especially the device for making sheep cut off their own heads by rubbing their necks against a sword, or for producing an earthquake by burning upon coals the dung of an ichneumon mixed with magnetic ore (pp. 99, 111, Cruice). Tertullian, de Praescript. c. 43, accuses the Gnostics of frequenting magicians and astrologers.