(M122) The most probable explanation of these practices seems to be that a manslayer is thought to be driven mad by the ghost of his victim, who takes possession of his murderer's body and causes him to demean himself in a frantic manner; whereas, as soon as the slayer has tasted the blood of the slain, he becomes a blood-brother of his victim, whose ghost accordingly will do him no harm.(485) This hypothesis is strongly confirmed by the reason alleged for a similar custom formerly observed by the Maoris. When a warrior had slain his foe in combat, he tasted his blood, believing that this preserved him from the avenging spirit of his victim; for they imagined that "the moment a slayer had tasted the blood of the slain, the dead man became a part of his being and placed him under the protection of the _atua_ or guardian-spirit of the deceased."(486) In the light of these facts we can now explain the opinion, still widely held in Calabria, that if a murderer is to escape, he must suck his victim's blood from the reeking blade of the dagger with which he did the deed;(487) and, further, we can see at least a glimmering of reason, however misapplied, in the confidence cherished by the Botocudos of Brazil, that if only they ate a morsel of the flesh of their enemies, the arrows of the fellow tribesmen of the slain would not be able to hit them.(488) Indeed the evidence which I have just adduced suggests that the intention of forming a blood-covenant with the dead may have been a common motive for the cannibalism which has been so often practised by savage victors on the bodies of their victims.(489) If that was so, it would to some extent mitigate the horror with which such a practice is naturally viewed by civilised observers; since it would reveal the cannibal feast, no longer in the lurid light of a brutal outburst of blind rage and hatred against the vanquished, but in the milder aspect of a solemn rite designed to wipe out the memory of past hostilities and to establish a permanent relation of friendship and good fellowship with the dead.