Analysis of information sources in references of the Wikipedia article "Geomancy" in English language version.
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Hartlieb wrote his handbook between 1456 and 1464 in Munich, and described the divinatory methods of the seven forbidden arts—geomancy, hydromancy, aeromancy, pyromancy, chiromancy, scapulimancy, and necromancy—in great detail, illustrating his descriptions with exhaustive reports on concrete practices. .... Theologians saw in every branch of divination first of all a demonic enterprise, and the abuse of divine privileges (that is, foreknowledge of the future). They did not allow themselves to be persuaded that most of these branches, such as palmistry and geomancy, could function without any visible application of demonic help.
