For the purpose their method is simple. They cut a rod off some fruit-tree into bits, and after having distinguished them by various marks, they cast them into a white cloth. . . . Then the priest thrice draws each piece, and explains the oracle according to the marks[1].” Ammianus Marcellinus says that the Alains employed an osier rod[2].
The fourteenth law of the Frisons ordered that the discovery of murders should be made by means of divining rods used in Church. These rods should be laid before the altar, and on the sacred relics, after which God was to be supplicated to indicate the culprit. This was called the Lot of Rods, or Tan-teen, the Rod of Rods.
But the middle ages was the date of the full development of the superstition, and the divining rod was believed to have efficacy in discovering hidden treasures, veins of precious metal, springs of water, thefts, and murders. The first notice of its general use among late writers is in the “Testamentum Novum,” lib. i. cap. 25, of Basil Valentine, a Benedictine monk of the fifteenth century. Basil speaks of the general faith in and adoption of this valuable instrument for the discovery of metals,
