This was an early form of divination used in Scotland. A speal bone or blade bone of a shoulder of mutton was used, but complete details of the divinatory method are not known. A soldier accompanying Lord London on his retreat to Skye foretold the result of the battle of Culloden at the very moment it was decided, claiming to have seen the event by looking through the bone. A.G.H.
Source: 9, 1567.