The figures of Geomancy consist of various groupings of odd and even points in 4 lines. Of these the greatest possible number of combinations is 16. Therefore these sixteen combinations of odd and even points arranged on four lines are the sixteen figures of Geomancy. These are again classed under the heads of the Elements, the Signs of the Zodiac, and the Planets. The figures are attributed to each of the Seven Planets, while the remainder are attributed to Caput and Cauda Draconis the Head and Tail of the Dragon, or the North and South Nodes of the Moon. Furthermore, to each Planet and Sign certain ruling Spirits are attributed.