Astrology.
Runes. Tarot. Medieval Geomancy. Geomancy is a medieval Islamic form of divination that, like many other medieval Islamic sciences, became popular in the West in the thirteenth century.
I first became interested in geomancy when I was reading John North's Chaucer's Universe, which briefly describes medieval geomancy as it relates to some passages in the Knight's Tale and Troilus and Criseyde. Geomancy was popular in Europe in the later Middle Ages and on into the sixteenth and seventeenth centuries. Unlike astrology and chiromancy (palm-reading), however, geomancy is little known today in the West (although geomancy is still practiced in Islamic areas and feng shui, a related Asian predictive art, also called "geomancy" in English, is currently fashionable).
Indeed, with the exception of the comprehensive survey of medieval geomancy by Thérèse Charmasson, geomancy has received practically no attention from scholars. Pythagorean Tarot. The Online Encyclopedia of Tarot. Scrying. Tarot Cards & Divination.