Eromancy is an expression derived from the Greek language (Greek āēr , air + manteía , prophecy) . Several forms of this divination art have been preserved: eromancia, eromanthus, eromany. Eromancy is one of many derivatives of aeromancy.
The most popular mention comes from the Occult Encyclopedia written by Lewis Spence, a Scottish journalist and folklorist interested in the occult. He wrote that this is one of the six types of divination practiced by the Persians with the help of air. They were to wrap their heads in a handkerchief and expose the vases filled with water to the air, over which they silently uttered the objects of their desires. If bubbles appeared on the surface, it was considered a happy forecast.
Eromancy was also described by Walter B. Gibson in “the full illustrated book of divination and prophecy.” He was an American writer and magician. His description of eromancy was somehow a copy of the one presented above.
Due to the divination of water, it can be considered that this method was also subject to hydromancy.