Lastly, in some tribes the blood shed at the circumcision {p95} and subincision of lads is collected in paper bark and buried in the bank of a pool where water-lilies grow; this is supposed to promote the growth of the lilies.​[322] Needless to say, this rude attempt at horticulture is not prompted by a simple delight in contemplating these beautiful bright blue flowers which bloom in the Australian wilderness, decking the surface of pools by countless thousands. The savages feed on the stems and roots of the lilies; that is why they desire to cultivate them.​[323] In this last practice a fertilising virtue is clearly attributed to the blood of circumcision and subincision. The Anula tribe, who among others observe the custom, obviously ascribe the same virtue to the severed foreskin, for they bury it also by the side of a pool.​[324] The Warramunga entertain the same opinion of this part of the person, for they place the foreskin in a hole made by a witchetty grub in a tree, believing that it will cause a plentiful supply of these edible grubs.​[325] Among the Unmatjera the custom is somewhat different, but taken in connexion with their traditions it is even more significant. The boy puts his severed foreskin on a shield, covers it up with a broad spear-thrower, and then carries it in the darkness of night, lest any woman should see what he is doing, to a hollow tree in which he deposits it. He tells no one where he has hidden it, except a man who stands to him in the relation of father’s sister’s son. Nowadays there is no special relation between the boy and the tree, but formerly the case seems to have been different. For according to {p96} tradition the early mythical ancestors of the tribe placed their foreskins in their _nanja_ trees, that is, in their local totem centres, the trees from which their spirits came forth at birth and to which they would return after death.​[326] If, as seems highly probable, such a custom as that recorded by the tradition ever prevailed, its intention could hardly be any other than that of securing the future birth and reincarnation of the owner of the foreskin when he should have died and his spirit returned to its abode in the tree. For among all these Central tribes the belief is firmly rooted that the human soul undergoes an endless series of reincarnations, the living men and women of one generation being nothing but the spirits of their ancestors come to life again, and destined to be themselves reborn in the persons of their descendants. During the interval between two incarnations the souls live in their _nanja_ spots or local totem centres, which are always natural objects such as trees or rocks. Each totem clan has a number of such totem centres scattered over the country. There the souls of the dead men and women of the totem, but of no other, congregate during their disembodied state, and thence they issue and are born again in human