Dactylomancy
An Encyclopaedia of Occultism (1920)
A term covering various forms of divination practised with the aid of rings. One method resembles the table-rapping of modern spiritualism. A round table is inscribed with the letters of the alphabet, and a ring suspended above it. The ring, it is said, will indicate certain letters, which go to make up the message required. It was used, according to Ammianus Marcellinus, to find Valen's successor, and the name Theodosius was correctly indicated. Solemn services of a religious character accompanied this mode of divination. Another form of dactylomancy, of which there is no detailed account, was practised with rings of gold, silver, copper, iron or lead, had their origin in Phrygia. Their number is given differwhich were placed on the finger-nails in certain conjunc-ently by different authorities. Some say it equals the Dactyls; A class of sorcerers and scientific physicians who number of fingers on the hands-five male and five female. Pausanias says five, Perecydes fifty-two, twenty right and thirty-two left; while Orpheus the Argonaut mentions a large number. The dactyls were magicians, exorcists, conjurors, soothsayers. Plutarch says that they made their appearance in Italy as sorcerers; while their magical practices and mysteries threw the inhabitants of Samothrace into consternation. They were credited with the discovery of minerals and the notes of the musical scale; also with the discovery and use of the Ephesian mines They introduced fire into Crete, musical instruments into Greece . They were good runners and dancers, skilled in science and learning, and from them came the first wise men. They are said by some to have been the magnetic powers and spirits, whose head was Hercules.
What Has Changed in the Last Century
Spence's 1920 description is still accurate as antiquarianism: a ring swung over a lettered board, spelling out messages, and the story from Ammianus Marcellinus that diviners at Antioch under Valens got the letters of Theodosius — the men involved were tried and executed for treason, and Theodosius did become emperor in 379. What has moved is the explanation rather than the practice. The swinging of a suspended ring or pendulum is now attributed to the ideomotor effect, tiny involuntary muscle movements made by the holder, a phenomenon Michel-Eugène Chevreul demonstrated experimentally and William Benjamin Carpenter named in the 1850s; controlled tests show the pendulum stops responding when the holder cannot see the letters. The technique itself never died out: it survives in New Age pendulum dowsing and "radiesthesia", while the table-rapping Spence called "modern spiritualism" now looks as historical as the Roman rite he compared it to. Note also that this entry is printed with its columns interleaved, so the material on the Dactyls of Phrygia belongs to the following article and has become tangled with the divination text.
Written for this edition, 2026.