It is not suggested, of course, that all contradictory statements emanate from the deliberate mystification of non-initiate enquirers. We have not by any means exhausted the causes of error in regard to savage beliefs. Contradictory statements are made in good faith because those who make them hold contradictory beliefs. On the subject, for example, of the future life the mutually destructive character of the beliefs often held by the same tribes, and even by the same individuals, is one of the truisms of anthropology. The Zulus and their neighbours hold that their dead are to be recognized in the form of various animals, notably snakes, that haunt the tomb or the abodes of the living, and yet that these very dead dwell in the bowels of the earth, presiding in patriarchal fashion over shadowy kraals, and rejoicing in the possession of herds of sky-blue kine with red and white spots. Moreover, notwithstanding this wealth of cattle, they are dependent, if not for their continued existence, at least for their comfort, on the sacrifices offered by their descendants. The truth is that “the whole spirit-world is one of haze and uncertainty.”[7.2] This opinion, expressed by an experienced missionary, {8} is true of all savage and barbarous nations. It is not merely the doctrine of souls that is difficult to understand fully and to state clearly: all the relations with the supernatural are shifting; and the supernatural itself melts away into mist and gloom and the undefined terrors of night.