The next point is the totem system. Messrs. Spencer and Gillen, describing one special case as an example of the rest, give us the following particulars. The Arunta believe that the most marked features of the district they inhabit, the gaps and the gorges, were formed by their Alcheringa ancestors. These Alcheringa are represented as collected together in companies, each of which consisted of a certain number of individuals belonging to one particular totem. Each of these Alcheringa ancestors carried about with him or her one or more of the sacred stones called churinga. These are the general traditions related by the Arunta of to-day to explain their own customs, and let it be noted that the explanation does not necessarily lead us to the primitive conceptions of the Arunta people, but to their present conceptions as to unknown facts. The local example is found close to Alice Springs, where there are deposited a large number of churinga carried by the witchetty grub men and women. A large number of prominent rocks and boulders, and certain ancient gum trees, are the nanja trees and rocks of these spirits. If a woman conceives a child after having been near to this gap, it is one of these spirit individuals which has entered her body, and when born must of necessity be of the witchetty grub totem; "it is, in fact, nothing else but the reincarnation of one of the witchetty grub people of the Alcheringa;" the nanja tree, or stone, ever afterwards is the nanja of the child, and there is special connection between it and the child, injury to the nanja object meaning injury to the nanja man.[373] There is evidence that the reincarnation theory is not admissible,[374] and, indeed, it does not seem warranted on the facts presented by the authors. With this unnecessary element out of the way, then, there is left a system of local totemism, arising at birth and depending upon the mother, without reference in any way to the father, associated with natural features, rocks and trees, and showing in a special way a curious system of sex cleavage by the men of the group being the exclusive guardians of the sacred churinga, and the women the active power by which the churinga becomes connected with the newly-born member of the totem group.[375]