Hematomancy

Hematomancy.

Hematomancy or Haematomancy is a divination by means of blood.

Etymology

Derived from the Greek haima ('blood') and manteia ('prophecy')

See Also:

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Earth Divination: Earth Magic: Practical Guide to Geomancy - John Michael Greer
Divination for Beginners: Reading the Past, Present & Future -Scott Cunningham