Note 25 — Chapter I · Illustrations of Belief in Magic in Mediæval and in Early Modern Times

The part of the manuscript containing the experiment was written between 1450 and 1500, Brown thinks, but purports to be a copy “from a very ancient work.” If spurious, its fabricator at least shows considerable familiarity with Scot’s life. See Brown, pp. 18–19. The recipe is given in full in the appendix of Brown’s book.