Kephalonomancy is a method of divination that is practiced by making diver signs on the baked head of an ass. It was familiar for the Germans and the Lombards to substitute for it the head of a goat.
The ancients placed lighted carbon on the ass’s head, and pronounced the names of those suspected of any crime. If a crackling coincided with the utterance of a name, the latter was thought to be the guilty person. A.G.H.
Source: 81, 243.