Modern Wiccans advocate practicing spodomancy on Lammas or Lughnasadh ( August 1 ).
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But some examples of spodomancy call for the use of other types of surfaces.
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Historical and modern writers consider spodomancy one of the least-familiar methods of divination.
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In the Celtic pagan tradition, spodomancy did not necessarily require the reading of ashes themselves.
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This is not spodomancy, however, as the cracks ( not the ash itself ) are being read.
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Some ancient Greek rituals of spodomancy required that the ashes be spread on a plank of wood rather than the floor.
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Spodomancy is distinguishable from capnomancy, which is divination by observing smoke, and pyromancy ( and its many subsidiary rituals ), which is divination by observing burning things or coals ( but not their ash or cinders ).
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In Mongolia, however, a divinatory ritual exists in which scapulimancy and spodomancy are combined : A smooth layer of ashes is spread on the shoulder blade of a cow, sheep, or ox, and a lama is divinely inspired to make calculations in the ash which indicate answers to questions or the future.
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Consider the use of bone : Divination techniques closely related to spodomancy include osteomancy ( divination using bones, particularly that practice which heats them to produce cracks which are portentious ), plastromancy ( divination using turtle plastrons ), scapulimancy ( divination using the shoulder blade; the Scottish term is slinneanachd ), and sternomancy ( divination using the sternum ).