logarithmancy

alternative logarithmomancy

1. obsoleterareuncountableDivination using logarithms.

   LOGARITHMANCY: A mathematical method of divination performed with the aid of logarithms. Now supplanted by modern computers.

   [1973, Walter B. Gibson, Litzka R. Gibson, The Complete Illustrated Book of Divination and Prophecy, London: Souvenir Press, published 1987, →ISBN, page 320

   1 more example

   What difference betwixt Astromancy, Magomancy, or Magastromancy (as touching a sorcerous both superstition, and operation) and all these after-named? viz. […] Arithmancy, by numbers; Logarithmancy, by Logarithmes; […]

   1652, John Gaule, “From the Affinity to Witch-craft”, in Πῦς-μαντία [Pys-mantia] the Mag-astro-mancer, or The Magicall-astrologicall-diviner Posed, and Puzzled. By John Gaule, Minister of Great Staughton in the County of Huntingdon, London: Printed for Joshua Kirton at the Kings Arms in St. Pauls Church-yard, →OCLC, page 165