Book IV, Part 39 · 64 of 253
Refutation of All Heresies
English, translated by Alexander Roberts and James Donaldson — Roberts & Donaldson, 1885
Chapter XXXIX.—Imitation of an Earthquake. The sensation of an earthquake they cause in such a way, as that all things seem set in motion; ordure of a weasel burned with a magnet upon coals (has this effect).