Ceroscopy is a system of divination by wax. The procedure was performed as follows: Fine wax was melted in a brass vessel till it was a liquid of uniform consistence.

Then it was slowly poured into another vessel containing cold water, in such a way that the wax formed into tiny discs. The magician or diviner then interpreted the shapes as their meanings appeared to him.

This divinatory method is similar to molybdomancyA.G.H.

Source: 9.