Reading Room · Fortune-Telling Methods · Method
Why did so many cultures read heated shoulder blades?
Scapulimancy is divination by shoulder blade, in which a heated bone's cracks were read as signs. The practice is documented in Shang China, Siberia, North America, Britain and Europe. Accounts link it to shamanic rituals, hunting decisions and royal or ritual authority, though later writers' explanations differ.
Facts checked on against 11 sources, 5 of them museum, university, archive, library, government or primary texts.
Key facts
Every line comes from a source listed at the bottom of the page. The small numbers point to it.
| Late Bronze Age | Shang Dynasty diviners cracked heated ox scapulae and turtle shells, and the king recorded the results on the bones.1 |
|---|---|
| 1450s | Johannes Hartlieb described scapulimancy among forbidden arts in a work written in this decade.23 |
| 1692 | Robert Kirk described a sheep-shoulder-bone practice called slinnenacd in The Secret Commonwealth.24 |
| 1878 | Broca presented his scapular index to La Société d'Anthropologie as a tool for ethnological research.5 |
| 1957 | Omar Khayyam Moore published his account of Naskapi divination in American Anthropologist.61 |
What the practice was
Scapulimancy is divination from the shoulder blade of an animal, often heated over a fire, with the cracks or blotches on the bone read as signs of the future. Two historic forms are recognised: the apyromantic form examined the bone after the animal's death, while the pyromantic form heated or burned it before the reading.78
Scapulimancy is the technical term for divination by shoulder bone, and it sits beside plastromancy, divination by turtle shell, and pyromancy. Britannica classes it as inductive divination, which derives meaning from natural phenomena, and lists it with augury, haruspicy and hepatoscopy.197
Shang China and the oracle bones
Per Emily Mark, Shang people believed diviners were in touch with ancestral spirits who answered through the bones, and they consulted diviners on marriage, travel, finance and war. Mark adds that these methods declined when the I-Ching became more popular in the Zhou Dynasty.9
Wang Yirong identified inscribed oracle bones in 1899 after buying what a doctor sold as dragon bones. Liu E published the first book on the inscriptions in 1903, and Luo Zhenyu found in 1908 that the bones came from an area outside Anyang.19
Hunting, divination and the Naskapi
The Naskapi, an Algonquian-speaking people of the Labrador Peninsula, read the pattern of cracks in a caribou shoulder blade to answer where hunters should search for game, often seeking the answer in a dream first.16
Moore reasoned that because hunters could not control how the cracks formed, the reading broke the habit of returning to places of earlier success. He described the method as a crude way of randomising behaviour where fixed patterns of activity could be a disadvantage. His account relied on Frank G. Speck's 1935 ethnography Naskapi.6
What the tradition holds
How practitioners describe it, in their terms. Described, not endorsed.
Scapulimancy is connected with shamanistic rituals and with fortunetelling among various traditional Siberian tribes, and archaeologists have linked regularly perforated scapulae in Central Asia to ritual use.10
Attila was said to have been warned about his defeat at Châlons by a scapula, and Genghis Khan used scorched sheep bones to check the reports of his astrologers.1
Donald Macpherson linked the Gaelic term Slinnairachd to slinnean (shoulder) and àr, and said the custom was carried out on Nollig and Callawin, which he tied to Christmas Eve and New Year's Eve.11
What the evidence shows
What historians, scientists and controlled tests have found.
Michalczewski, Borodovskiy and Oleszczak reported microscopic observations on materials from the Chultukov Log-9 settlement in Altai, dated to the Xiongnu-Xianbei-Rouran period, and conducted experiments to tell shoulder blades used as tools apart from those used in ritual.10
Henrich's The Secret of Our Success (2016) cited Moore and suggested that Naskapi divination may have worked as a crude randomising device. Henrich argued that if people understood bone divination did not predict the future, the practice would probably be dropped. Derex, Bonnefon, Boyd and Mesoudi (2019) published evidence that causal understanding is not necessary for the improvement of culturally evolving technology.6
Worked out from the evidence
Not stated outright by any one source. It is worked out from the sources cited.
- The accounts of why the reading spread do not agree. Moore saw the Naskapi cracks as a randomising check on hunting habits, while Slaughter (1981) argued that the reading relieved the leader of blame if a hunt failed.61
- Scapulimancy was recorded in regions far apart, from Shang China to the Scottish Highlands and the Chukchee, and the practice is tied to ritual authority, herding and hunting rather than to one single origin.78
Not yet confirmed
- Why did the pyromantic form cluster in East Asia and North America while the apyromantic form was more common in Europe and the Near East?
- How far did the Shang royal reading of bones shape the wider Chinese divination tradition?
Sources
Museums, universities, archives and primary texts first. Every fact is paraphrased and nothing is copied; Wikipedia is never cited.
- daily.jstor.org: How to Read the Bones Like a Scapulimancer - JSTOR Daily. Read on · University
- starsandsieves.com: Bones - Stars, Sieves and Stories. Read on · Reference
- blogs.libraries.indiana.edu: The Fore-Readable Future: Divination in the Library. Read on · University
- taylorfrancis.com: Arabic Divinatory Texts and Celtic Folklore: A Comment on the Theory a. Read on · Library
- Internet Archive: The Range of Variation of the Human Shoulder-Blade. Read on · Primary text
- sciepublish.com: Randomization, Ritual, and Cultural Evolution: Revisiting Omar Khayyam Moore’s “Divination: A New Perspective” - Nature & Anthropology - Full-Text HTML - SCIEPublish. Read on · Reference
- britannica.com: Scapulimancy | occult practice | Britannica. Read on · Reference
- alabastersemporium.home.blog: Scapulimancy – Alabaster's Emporium of Arcane Knowledge and Intriguing Objects. Read on · Reference
- worldhistory.org: Oracle Bones - World History Encyclopedia. Read on · Reference
- tandfonline.com: The Ritual Use of Animal Scapulae in Central Asia in the Xiongnu-Xianbei-Rouran Period: Environmental Archaeology: Vol 28, No 4. Read on · Peer-reviewed journal
- cailleachs-herbarium.com: Divination by shoulder blade - scapulimancy–Slinneanachd/Slinnairachd - Cailleachs Herbarium. Read on · Reference