Pyromancy (Ancient Greek ἐμπυρία (empyria), divination by fire) is the art of divination by means of fire or flames.
The word pyromancy is adapted from the Greek word pyromanteia, from pyr (πῦρ, fire) and manteia (μαντεία, divination by means of). Its first known use was in the 1300s, and it evolved into the Late Latin word piromantia and Old French word piromance.
Oracle bones are pieces of ox scapula and turtle plastron which were used in pyromancy – a form of divination – during the Late Shang period (c. 1250 – c. 1050 BCE) in ancient China. Scapulimancy is the specific term if ox scapulae were used for the divination, plastromancy if turtle plastrons were used. A recent count estimated that there were about 13,000 bones with a total of a little over 130,000 inscriptions in collections in China and some fourteen other countries.
Diviners would submit questions to deities regarding weather, crop planting, the fortunes of members of the royal family, military endeavors, and similar topics. These questions were carved onto the bone or shell in oracle bone script using a sharp tool. Intense heat was then applied with a metal rod until the bone or shell cracked due to thermal expansion. The diviner would then interpret the pattern of cracks and write the prognostication upon the piece as well. Pyromancy with bones continued in China into the Zhou dynasty, but the questions and prognostications were increasingly written with brushes and cinnabar ink, which degraded over time.
Scapulimancy (also spelled scapulomancy and scapulamancy, also termed omoplatoscopy or speal bone reading) is the practice of divination by use of scapulae or speal bones (shoulder blades). It is most widely practiced in China and the Sinosphere as oracle bones, but has also been independently developed in other traditions including the West.
Historically, scapulimancy has taken two major forms. In the first, "apyromantic", the scapula of an animal was simply examined after its slaughter. This form was widespread in Europe, Northern Africa and the Near East. However, the second form, "pyromantic" scapulimancy, involving the heating or burning of the bone and interpretation of the results, was practiced in East Asia and North America.