Ceroscopy is form of scrying using wax. The wax was melted into a brass vessel till it became a liquid of uniform consistence. The liquid wax was then poured very slowly into another vessel filled with cold water. The pouring was done in a way that the wax congealed in tiny discs upon the surface of the water. The divinator then interpreted the figures of wax.
Scrying by reading wax images also goes to candle scrying where you read the dripping of a candle that has developed over the side of the candle on the candle stick holder.
From personal experience, I have noted that drippings are influenced by the color of the candle and the energies of the person scrying. I have seen interesting patterns formed, everything from angels to faces and more. They can be regarded messages either from spirit or from the subconscious mind of the scryer.