"Geomancy is an ancient form of divination that is practiced by making a series of random marks that are then counted into sets of odd or even sequences. Following a binary logic, the odd or even collections result in a possible sixteen figures that can be used for interpretation. The divinatory reading applies a process of mathematical recursion to these figures in order to arrive at a final answer to the query. Drawing on a range of historical sources, this handbook covers the general principles of the geomantic method, its mythological origin, the interpretation of the figures, and provides a blank zshieldy for conducting your own geomantic reading."-- Publisher's website.