The law regarding the family kobongs, mentioned above.
Independent of these laws there are certain articles of food which they reject in one portion of the continent and which are eaten in another; and that this rejection does not arise from the noxious qualities of the article is plain, for it is sometimes not only of an innocent nature but both palatable and nutritious: I may take for example the unio, which the natives of South-west Australia will not eat because, according to a tradition, a long time ago some natives ate them and died through the agency of certain sorcerers who looked upon that shellfish as their peculiar property..