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Oomancy (sometimes termed ovomancy or ooscopy) refers to divination by eggs. An example would be the oracular reading (i.e., scrying) of the shapes a raw egg white forms when dropped in a glass of water. Along with other young girls of Salem Village, Betty Parris and Abigail Williams are known to have to played at reading omens by means of an egg and a mirror (or "Venus glass"): an apparently similar system of egg divination.
In one method, the separated white of a raw egg is dropped into hot water and the shapes in the rapidly cooked egg material are interpreted by the diviner.