geomancy

Hard by here, in the Brown-wheat-Island, dwelleth Her Trippa; you know how by the Arts of Astrology, Geomancy, Chiromancy, Metopomancy, and others of a like stuff and nature, he foretelleth all things to come...

geomancy … The pretended art of divining future events, or of ascertaining the luckiness or unluckiness of any event or locality, by means of signs connected with the earth … or, as in China, from the configuration and aspect of a particular region in its relation to some other.